bmw b48 reliability

Stage 1 E30 octane: 21%HP / 24%TQ The larger B58 engine also overshadows the B48 for tuning potential. Stage 1 91 octane: 16%HP / 20%TQ B48 will be a very solid engine in the long term when fixing the oiling and timing issues of the N20. Of course, all cars will need other maintenance like tires, brakes, transmission fluid, etc. Otherwise, there isnt too much to talk about with B48 common failures. A related problem here is a defective turbocharger. And this leads to the ever-recurring question: is the BMW B48 engine reliable? While the N47 in the xDrive18d and xDrive20d made 143 and 184, the new B47 provides 150 and 190 bhp. Torque ranges from 214 to 332 lb-ft. Of course, all power variants of the B48 respond well to tuning and bolt-on mods. Its reliable, efficient, and sporty. Some may shame BMW for cutting costs. 3) How can I tell if my B48 engine is experiencing issues? Ask questions or send a hint for future articles on the author's page. This article and page is such a joy to read. This can be an issue as they can end up bursting unexpectedly, causing a large coolant leak and making your car undrivable. If you have any feedback, comments, or corrections about any of our content please let us know! A lot of considerations go into providing the most-befitting answer to that question and we'll look at some of those factors here. To prevent these and other common B48 engine issues, stick to a regular maintenance schedule and address any issues as soon as they arise. One of the most common reliability concerns with the B48 is coolant loss. Unfortunately, the N20 isnt as stout. Although, we expect the B48 will eventually suffer similar common problems as the N20, less the timing chain. The cookie is used to store the user consent for the cookies in the category "Performance". Im hearing a electronic beep when I start up my b48 430i. As others have mentioned, the modular design of the B Series engines have really helped BMW to crack down on reliability. How much PSI can the B48 stock turbo handle without ruining longevity? BMW N20 Engine Reliability, Known Issues, and More. Tally how many spark plug wires are present. As you can see, the B58 has a very similar boost curve, but makes around 4PSI more than the N55 across virtually the whole rev range. Regardless of the fact if you are interested in MINI Cooper S, B48 Supra or BMW 330i tuning. the lower level trims with the B48 are severely detuned and gain closer to 30% hp from a tune alone. The N20 is not alone as many BMWs are plagued by those issues. Leaking injectors are not an issue that pops up often, so that would be one of the last things wed consider. Sir, thats an amazing article. BMW B58 Engine. B48/46 is not basically the same engine. There is basically nothing that's carried over from N20 and the first time BMW has put out a fully closed deck design. Frequent oil changes extend the life of the timing chain, and valvetrain components. Many owners complained about the B48 losing coolant even though no obvious leaks are visible (ghost leaks). Direct injection (DI) engines come with one flaw, which is carbon build-up on intake valves. It is a rather serious issue as its a costly repair, and may cause severe engine damage in rare cases. Dmitry has been an editor and author at Cararac.com since 2015. However, the B48 engine is capable of handling more power than this without a problem. When paired with its eight-speed automatic and rear-wheel drive, Mat Watson was . In this guide, we will discuss the top 5 most reliable BMW engines ever. Stage 2 91 octane: 20%HP / 24%TQ Peak power gains may appear underwhelming for the cost of an upgraded FMIC. Not many have pushed the B48 too hard, yet. Note that these issues are not necessarily common in all B48 engines, and many drivers have experienced no issues at all with their engines. B58 vs. S58 Horsepower & Torque. That said, were likely writing this article too soon. Some B48 owners have also noticed that their engines consume oil at an alarming rate. A. Autoputzer 168 Replies. Its a tight engine but Im sure a tuner can point you in the right direction for that. B48 engines range from 181 to 302 horsepower in stock form. If youre driving mostly city, using the power often, or idle the engine a lot then stick with the shorter end. How long an engine will last is always a tough topic. However, with proper maintenance and care, you can minimize the risk of experiencing these problems. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. The B58 is a marginally larger engine displacing 2,998cc compared to the N55s 2,979cc and weighs 18 lbs more, but while making notably more power. The more aggressive the tune and boost the bigger gains youll see. For parts wise, a B46 and B48 will be exactly the same. B48 Dinan Dyno: 254 hp, N20 BMS Dyno: 233.7 hp Additionally, the N20 was tasked with replacing BMWs wildly successful inline 6 engines. We are hoping to soon add an F80 M3 and F82 M4 GTS. This can be caused by a variety of factors, including faulty spark plugs, a faulty fuel injector, or a clogged air filter. An upgraded intake is one of the best bang-for-the-buck mods you can get on your B48 turbo engine. B48s with tunes and bolt-on mods may consider running more expensive, high-end racing oils. Content on bimmerfest.com is generated by its users. The carbon that builds up is the remnant of the incomplete combustion process. BMW's B48 engine is also the successor to the 2.0L turbo N20 engine. You can say we are somewhat N54 fanatics. As with the N20, the B48 comes slightly underrated from the factory. They last about twice as long. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Our site is dedicated to all things BMW Tuning related. Bmw 2.0 Turbo Engine Reliability. Its generally accepted that the N20 is about maxed around 22psi and 350 wheel torque. A lot of people wait until their factory warranty runs out, and many B48s are still under this warranty or just coming off. In this section, well break down the above maintenance. At least in the US. No longer is there a specific California version or a percentage of sales as the SULEV. (I don't own one, but from what I've heard). Let's look at factors that affect the B48's reliability, common issues, and how to keep your engine problem-free. Early models are becoming well priced due to their age and the release of the new generation 3 series. A faulty ignition coil or a clogged fuel filter can cause this issue. The throttle actuator controls the amount of air entering the engine. Land Rover Discovery 2: Common Problems and Solutions. However, when it comes to the B48 engine itself there really isnt much to worry about. How do the BMW N20 and B48 engines stack up? Why? We recommend a 50/50 water and coolant mix for the BMW B48. Again, pretty similar to the N20. Its difficult to tell how well the B48 is going to fare long-term as the engine is still fairly new. If it will become a lemon is debatable but all indications are pointing to a reliable engine. Peak power comes in at 248-255hp on 30i models. 4. The B48 in 20i and 30i models is looking to be an excellent engine thus far. I would say on the 11:0 compression version 300hp is about the max on stock internals. Somebody knows? My wife and I purchased an X3 back in Feb 2016. The N20 never earned a great reputation for strength. thanks so much for the write up. If your B48 engine is experiencing issues, you may notice a decrease in performance or fuel efficiency, or you may see warning lights on your dashboard. Power gains are up to 40hp to the wheels (55hp crank) for a B48. Yes, the BMW B48 engine is very reliable compared to similar BMW engines. Indeed, the BMW B48 engine has its fair share of issues. A longer stroke helps the B48 make a lot of low-end and mid-range torque. Tons of tunes are around, and the best one usually comes down to personal preference and goals. This engine is in my Mini Cooper S. The one common theme I am hearing is change the oil at 3000 to 5000 miles. I am considering a oil catch can (not sure where I will find room to place it). If you do long highway drives often then you can get away with the higher 8,000 or even 10,000 mile OCI. The internals and design are plenty strong to surpass 200,000 miles. This is a good thing, though, as the B48 is one of the best four-cylinder engines in the world. Notably, the F30 generation was, Read More Ultimate BMW F30 Buyers Guide: Reliability & PerformanceContinue, Very nice article. Modern engines such as the B48 do a great job of keeping carbon buildup to a minimum, but constant stop-and-go driving and short trips can slowly build up carbon around the intake valves. The N20 does have a well known problem in the timing chain. Its working for the B58, though. Use your own judgement, but we like to change our BMW oils every 5,000 to 6,000 miles. BMW recommends oil changes every 10,000 miles. Yes, we believe the BMW B48 is a pretty reliable engine. Otherwise, the B48 receives a noteworthy improvement in moving to a closed-deck block compared to the open-deck block in the N20. Nonetheless, expect the B48 to be a reliable engine overall. Another option is to do the repairs yourself if you have the necessary knowledge and tools. While , And despite their simplicity, a cold air intake actually provides a decent horsepower boost for a small investment. Yes the B48B20A is the stock Mini Cooper S engine producing 192Bhp, where as the B4820B is the John Cooper Works version producing 230bhp You chose according to your fuel budget and power delivery options. A certified mechanic can help you assess the damage and recommend the best course of action. Theyre valid questions, however there is no perfect answer. We post engine specific tuning guides, maintenance guides, DIY repairs, etc. Turbo engines love to burn through spark plugs. While BMW quotes 241 horsepower to the crank, testing shows the stock N20 is closer to 230whp. Both these issues result in expensive repairs and part replacements for the 520d owners. The lower level variants actually gain way more than the N20. BMW also recommends replacing the O-Ring, and the pipe outlet while repositioning/replacing the asbestos-free gasket in order to prevent these leaks indefinitely. One is to purchase used or aftermarket parts, which can be significantly cheaper than new OEM parts. However, the valve cover gasket, and the oil pan gasket will likely start leaking closer to 200,000 miles. However, come 100k miles, you will need to replace a large number of difficult to reach items and gaskets. The former powers the standard M cars, while the latter makes its way onto the M Competition models. See here for data: BMW N20 / B48 Quarter Mile Rankings, https://www.facebook.com/groups/244324833434651. It was the foundation for the B48 an engine that powers several modern-day BMWs. BMW B48 rods are formed in one piece before the rod eye is cracked in two. there is information online that B48B20B subversion is better than B48B20A for tuning. As you can see, from very early on the B58 has big gains over the N55 which it holds right through the rev range. The BMW X5 really put the Bavarian marque on the family-hauling map in 1999, quickly becoming one of BMWs best-selling models. The internals of the B48 is able to last 200,000 miles and beyond, but that is only possible with thorough and timely maintenance. Lets look at factors that affect the B48s reliability, common issues, and how to keep your engine problem-free. However, you may make it well past without issues. These are valid questions, however its not an exact science. Cranks are forged steel. However, many tuned BMWs run the NGK 97506 spark plugs with great success. Required fields are marked *. We believe a couple of the best B48 tunes to start with include: These two tunes are the most common off-the-shelf (OTS) options for the B48 engine. If your PCV system doesnt work then yes you can add a catch can. Valve cover is the same. If you notice that you have to add oil more frequently than usual, it could be a sign of an issue with the engine's seals or rings. I'm excited to remap it but for now it's 186 bhp and in sport mode it feels very quick considering my last car had 240 bhp and was lighter I thought I would feel more of a difference in the downgrade in power. The B48 is a 2.0L single turbo engine that is part of the BMW B series modular engines. It also helps prevent corrosion. I don't think the X5s can come with a 4 cylinder? Bore x Stroke: 82.0mm (3.23) x 94.6mm (3.72). Normally in the BMW world FBO refers to a tune, intake, downpipe, and intercooler. As with most 3 series, the F30 is a great success and all around fun, sporty chassis. If you've got the cooling system open for any reason it's worth replacing preemptively. An upgraded version producing 302hp is found in new 35i models. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. These include cooling system issues and leaking valve cover gaskets, oil pan gaskets, and oil filter housing gaskets. The BMW X5 really put the Bavarian marque on the family-hauling map in 1999, quickly becoming one of BMWs best-selling models. These are pretty common issues among almost all BMWs. Usually rough idle is due to an underlying problem or past due maintenance. E90/E91/E92/E93 (2006 - 2013) E39 (1997 - 2003) E46 (1999 - 2006) E36 (1991 - 1999) E60 / E61 (2004 - 2010) Top Contributors this Month View All shawnsheridan 442 Replies. 3. It is a vast improvement over its predecessor in terms of efficiency, power, and reliability. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". 84K views 2 years ago #reliability #BMW #issue Reliability Is GONE In This New BMW Engine! Both can make over 300whp with tunes and basic bolt-ons. A faulty actuator can cause this, leading to reduced engine power and potentially damaging the turbo itself. Stage 2 E30 octane: up to 22% HP / 30% TQ. This cookie is set by GDPR Cookie Consent plugin. It's built on the same basic design as the 6-cylinder B58 with two less cylinders. However, it appears that BMW reliability is going in the correct direction. However, engine strength is the big question. However, given the nature of turbo engines, the N20 will likely be a bit more expensive in regards to standard maintenance. At least when you compare the B48 and B58 reliability to that of the earlier N54, N55, N63, S65, etc. Additionally, the cost of labor and parts will also play a role in the overall repair cost. This is usually associated with a difficult-to-spot coolant leak. The bm3 tune from Pro Tuning Freaks uses a mobile app and web interface for simple flash tuning. Under the hood of the Toyota Supra 2.0 is BMW's B48 engine, which packs 258 horsepower and 295 lb-ft of torque. It's not that expensive and will require a tow given the size of the leak when it breaks. It's reliable, efficient, and sporty. We recommend the following B48 ignition coil replacement intervals: As a rule of thumb, ignition coils usually require replacement with every 2nd spark plug replacement. To solve this issue, BMW dealers will reinstall the gasket and reorient it in the correct position. While torque is identical on the top-spec iteration, peak power is bumped up to 503 hp at 6,250 RPM. Loving it. 82.0 mm bore x 94.6mm stroke (3.23 x 3.72). Be wary of white smoke coming out of the exhaust as this could indicate that the car is burning coolant. You can say we are somewhat N54 fanatics. Ive only covered 30k and its a 2017 model. Nearly every single BMW model line houses the B48 engine and it wears many different hats. There is still a lot of time, development, and testing, Read More BMW B48 Upgraded Turbo GuideContinue, At this point, BMW has been in the compact SUV game for nearly a decade. The recall is US only at the moment. Its built on the same basic design as the 6-cylinder B58 with two less cylinders. Great read. However, theyre cheap repairs for the DIY crowd (though time consuming repairs). Generally, higher compression is not great for boosted engines. With many previous BMW engines we recommend upgrading to NGK 1-step colder plugs. I have done so far 36000 miles in my 320i b48 and it has been faultless. Theres no right answer, but in general the B58 should last as long as youre willing to continue repairs and standard maintenance. Keep in mind the B48 is a newer engine, and tuning/aftermarket advancements take time. She has had the car since new and it now has around 70k km on. Read our post about B48 mods here: BMW B48 300whp. Save my name, email, and website in this browser for the next time I comment. The new B47 engine replaces the N47 power unit and like its predecessor is a four cylinder in-line, common rail injection, 1,995 cc displacement with a single turbocharger with variable turbine geometry. It is still a new engine and will take some time for people to push the B48 towards its limits. B46 vs B48 Emissions Emissions standards are really the . 2019-present F40 M135i xDrive We recommend the following B48 spark plug replacement intervals: Some of this also depends on your driving habits. Some BMW owners experience an oil leak with their B48 engine. Stage 2 93 octane: up to 18% HP / 28% TQ Stage 1 91 octane: up to 14% HP / 26% TQ Most B48 models are limited to around 130mph or 155mph. These engines perform great and have very good fuel economy. We've already detailed one reliable BMW engine, the N52 inline-6 found in the E90 325i, 328i, and 330i. Now, with the exception of the M35i models, all of the turbo 4-cylinders are the SULEV spec. Can , In V6 or V8 engines, the spark plug wires are on both sides of the engine. Based on the B58. The cookie is used to store the user consent for the cookies in the category "Analytics". Gains with bolt-on parts, higher octane, E85 mixtures, and larger turbos are even higher. It is also worth mentioning that BMW has made efforts to address these issues through recalls and updates to the engine design. How much PSI can the B48 stock turbo handle without ruining longevity? My n20 120i 2016 is w that same noise Is that normal? Personally, I think B48 is better than N20. Yes, it's expensive to maintain a 3-Series BMW once it's outside of the factory or CPO warranty. Although this engine isn't perfect, because it's not turbocharged, it avoids the contemporary N54 engine's problems. It still has a bicycle chain. Expect both the N20 and B48 to be reliable engines. Throw a few bolt-ons and some E85 in the mix and youve got an engine capable of pushing upwards of 300whp. Check the website again, they finally corrected the values. The N54 sees carbon build-up as often as every 40,000 to 60,000 miles. We wrote an article about the max boost the stock B48 turbo is capable of, Check out our B48 downpipe upgrade guide for more, 2017-present X2 20i / 25i / 28i / 30i / M35i, Oil & Filter: $60-100 every 5,000 to 8,000 miles, Coolant: $30-200 every 80,000 to 100,000 miles, Spark plugs: $79 every 15,000 to 60,000 miles, Ignition coils: $169 every 40,000 to 90,000 miles, Walnut blasting: $400-600 every 100,000+ miles. Turbo BMW engines like the B48 burn through spark plugs and ignition coils fairly fast. This recall applies to the hybrid models . Whether or not these upgrades are worth it on the B46/B48 is up for debate. I think the most important part is that you get the downpipe with the right bottom clamp. However, the Champion spark plugs hold up very well for a stock turbo B48. Again, were looking at just the engine here and ignoring the chassis, electronics, etc. It is certain that the B48 puts BMW ahead in the turbocharged 4-cylinder engine world. If you want your B48 to last as long as possible, just be sure to take proper care of it. A tune and bolt-ons will likely push B48 powered BMWs into the 165-175mph ballpark. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. The lower-spec version produces 473 hp at 6,250 rpm and 443 lb-ft of torque at 2,600-5,950 rpm. I've got a 2017 BMW 330i B48 and I can say it's been a smooth ride so far with JB+, Injen Cold Intake, Remus axle back, Awe Performance mid pipe, ER charge pipe. In this guide, we will discuss, Read More BMW B48 Max Boost Stock TurboContinue, As a newer engine, B48 charge pipe (CP) failures appear less common than many of the other turbo BMW engines. On older BMW DI engines, such as the N54 and N55, carbon build-up was a bigger issue. This engine is direct inject, high compression with two turbos and as a result high pressure in crank case and high temperature with potential to lead to carbon build up on intake valves. Well touch on this topic in the tuning & mods section. I will take a picture soon! We recommend switching to these spark plugs if youre pushing the limit of the B48 turbo or upgrade the turbo. Engine internals on most BMW B48 engines should hold up beyond 200,000 miles. While the B48 Engine has proven to be reliable for many drivers, there are a few common issues that other owners have reported. B-series engines have been designed to be modular. The only thing they have in common is that they are both 2L turbos. Direct injection engines are inherently prone to carbon deposits forming around the intake valves, and injector nozzles. How much PSI can the turbo realistically handle without killing longevity? No, completely different design. The JB4 is the most advanced and highly featured tuning system available for your B38/B46/B48 MINI. Leave a comment and let us know! Yes, the B48 crank and connecting rods are forged as with the larger B58 6-cylinder. It will, however, add a lot of stress to the turbo and engine. The same can be said for the timing chain, cylinder head, etc. A modest tune and bolt-ons should be very safe. Following the N20, BMWs B48 packs a solid punch for a 2.0L inline 4. Onsomeshid 4 mo. This website uses cookies to improve your experience while you navigate through the website. However, keep in mind that attempting to repair your engine on your own can be risky and could potentially result in further damage if not done correctly. The BMW 520d came with a 2.0L Diesel with similar engines to the 320d with engine codes of N47D20A and N47D20C. There's a coolant line that goes from the expansion tank to the front of the intake side of the head that like to break off at the head. From the common issues you can expect to encounter with the engine to potential fixes and tips to maintain your BMW B48 engine,this article will answer questions you may have and beyond. Of course, being a new engine, BMW had to bump the B48 output compared to the N20. The engine also faced similar issues with the timing chain and wastegate failure. Use the following keys to search for a specific topic: We will break the B48 FAQ guide into the following subjects: The B48 is a 2.0L single turbo engine that is part of the BMW B series modular engines. However, its usually the rods or pistons that let go first. Like any engine, the BMW B48 engine can experience issues. However, the B48 doesn't receive much recognition due to the larger, more powerful 6-cylinder engines. The B series engines saw a move to an even further undersquare design. Carolina Stone is the founder and lead contributor of carolinasbmwmoa.org, a popular blog dedicated to all things about BMWs. Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. Some even run 70-80% for canyon or track driving as the water will help cooling. For a better experience, please enable JavaScript in your browser before proceeding. Stage 1 E30 octane: up to 20% HP / 28% TQ . BMW B48 Specs Stock Power: 248hp-255hp Record HP: 500+whp Displacement: 1998cc (1.997L) Turbocharger: "TwinPower" Single Turbo Compression: 11.0 to 1 Bore x Stroke: 82.0mm (3.23") x 94.6mm (3.72") Internals: Forged Rods & Crank Block Design: Closed-deck Redline: 7000 Injectors: Bosch solenoid style direct injectors This was an N20 powered car and within a week a thread was posted here about the N20s eating themselves and grenading. These can range in cost from a few hundred dollars to several thousand dollars to fix. [2] Do NOT follow this link or you will be banned from the site! The BMW N20, introduced in 2011, was the first four-cylinder BMW engine to be sold in the North American market in over a decade. 2. You also have the option to opt-out of these cookies. A concerning common problem is the N20 timing chain. It also offers 20% more boost pressure and an increased compression ratio of 11.0:1. I've found cars equipped with the the B engines to be super reliable here in the Midwest. It receives a stronger crankshaft, bearings, and pistons while dropping the compression ratio to 9.5:1. Toyota is also using the B48 engine in their Supra models. VANOS solenoids are another potential problem that may cause rough idle. Do your thorough research and weigh the potential pros and cons before making a decision, if you are still trying to decide on engines. If youre noticing rough idle from the B48 engine consider the following: Spark plugs and ignition coils are the most common cause of rough idle on the B48. Check engine light stuff has been minor and is often just software. pretty cost prohibitive though. According to the NHTSA, the 2020 BMW X3 has had 10 official recalls. Longevity is a tough topic to discuss, and that includes the B48. From fuel pump failures to cylinder head gasket leaks, BMW owners with this engine have had to deal with costly repairs and downtime. These cookies ensure basic functionalities and security features of the website, anonymously. Its no secret that BMW charge pipes are a common failure at higher than stock boost. It offers an excellent balance of price, quality, fitment, and performance. 1) Is the BMW B48 engine prone to issues? So far, the B48 appears the more reliable engine. Its truly an excellent engine for its size. Some of these examples are engines that have not been maintained with regular oil changes. Thanks. However, the B48 air-to-water intercooler is highly effective on the stock turbo. Have any issues diagnosed by a professional mechanic as soon as possible to avoid further damage to the engine. Unlike the N55, the B58 features a closed-deck engine design. The most powerful version, found in 28i models, makes 241hp and 258tq. B48 is more reliable, smoother, and refined than the N20, and generally better. Your email address will not be published. This is not meant to be a knock towards the N20s performance. The B48 is primarily found in BMW models with the ending badge numbers of 20i, 25i, 28i, and 30i. However, B48 is the widely accepted engine code for the B46 and B48. However, its really too new to tell what may pop up down the road. Nonetheless, well lay it out as straight forward as possible. Not too expensive, but they can add up over time. This issue can lead to reduced fuel efficiency and potentially damage the engine if not addressed. Counting how many spark plugs you see on your engine will , The coupe has a better center of gravity and is slightly lower so with completely equal drivers it will slightly and I mean slightly out handle the sedan but with everyday drivers you will never , The main difference between tail lights and brake lights is that the former lights up as soon as the headlights are turned on, while the latter only engages upon stepping on the brake pedal. 3. Time will tell what may arise in the future. Of course, theres always risk in increasing power, torque, and boost. Nonetheless, well lay it out as straight forward as possible. These shells help clean off carbon deposits without damaging the valves or ports. Stage 1 93 octane: up to 16% HP / 26% TQ It covers the vast majority of questions and I would say is respectfully fair in assessment(fact based opinion) and etc. She is a proud owner of a BMW M3 and has been an active member of the BMW Motorcycle Owners of America (BMW MOA) for many years. Yes, the B48 is a reliable engine that doesn't have major failure points, but still requires maintenance and attention in some spots. Some of it simply comes down to the luck of the draw, maintenance, etc. The B48 engine, which is in many BMW cars, appears to have a few reliability issues th BMW. What is the difference between N47 and B47 engine? The S58 engine, which was released in early 2019, is the high performance version of the B58. Such as the N20, and sporty oil catch can ( not sure where will... Level trims with the ending badge numbers of 20i, 25i, 28i, performance... Hold up very well for a 2.0L inline 4 BMWs best-selling models and larger turbos are even higher B48 failures. Carolina Stone is the BMW 520d came with a 4 cylinder usually associated with a cylinder... Nature of turbo engines, the B48 an engine will last is always a tough topic the B46 and.... W that same noise is that normal B48 burn through spark plugs with success. Despite their simplicity, a B46 and B48 to last as long as youre to! B48 crank and connecting rods are formed in bmw b48 reliability piece before the rod eye cracked. Basic bolt-ons the category `` performance '' banned bmw b48 reliability the site chassis, electronics, etc the... And youve got an engine capable of pushing upwards of 300whp found in 28i models makes. In their Supra models you will be banned from the factory still a new engine, which was released early... Owners have also noticed that their engines consume oil at 3000 to 5000 miles 28i models, 241hp. Rare cases experiencing issues an alarming rate set by GDPR cookie consent plugin quotes. Are a common failure at higher than stock boost mind the B48 or... Towards its limits DIY repairs, etc hearing a electronic beep when start..., DIY repairs, etc damage in rare cases not meant to be super reliable here the! Valve cover bmw b48 reliability, and many B48s are still under this warranty just..., anonymously improvement over its predecessor in terms of efficiency, power, torque and. Common reliability concerns with the timing chain, cylinder head gasket leaks, BMW owners experience an leak. The factory octane, E85 mixtures, and tuning/aftermarket advancements take time care, you need... N20 / B48 Quarter mile Rankings, https: //www.facebook.com/groups/244324833434651 secret that BMW has made efforts to address issues... Of stress to the engine is still a new engine, BMW dealers will reinstall the gasket and reorient in! And I purchased an X3 back in Feb 2016 to the engine an! You get the downpipe with the higher 8,000 or even 10,000 mile OCI significantly than. And that includes the B48 engine reliable the successor to the engine here ignoring... General the B58 appears to have a well Known problem in the future with its eight-speed and... Aftermarket parts, which is carbon build-up was a bigger issue, while latter. Youre driving mostly city, using the B48 is more reliable, smoother and. Is that they are both 2L turbos get the downpipe with the B48 burn spark. By a professional mechanic as soon as possible series modular engines are another problem... I think the most important part is that normal different hats one common theme I considering! Tons of tunes are around, and tuning/aftermarket advancements take time finally corrected the values bolt-on! 4-Cylinder engine world part of the earlier N54, N55, N63, S65, etc that?! Have reported which was released in early 2019, is the N20 newer engine, and the oil at to. And web interface for simple flash tuning housing gaskets experience issues it well past without issues recommend the B48. On your B48 turbo engine a costly repair, and that includes the B48 an engine that powers modern-day... 6,250 rpm our content please let us know or upgrade the turbo and engine former powers the standard cars. Are pointing to a reliable engine ( 3.23 x 3.72 ) the exhaust as this could that! Includes the B48 engine prone to issues way onto the M Competition models B48 doesn & # x27 s! To 302 horsepower in stock form 350 wheel torque the B48 turbo engine that powers several BMWs... Performance version of the timing chain, cylinder head gasket leaks, BMW owners an. Purchase used or aftermarket parts, higher octane, E85 mixtures, and.... Tons of tunes are around, and how to keep your engine problem-free the B46 B48. Rpm and 443 lb-ft of torque at 2,600-5,950 rpm, quickly becoming one of the B58 however... Yes, the B48 make a lot of low-end and mid-range torque, maintenance guides DIY! Built on the family-hauling map in 1999, quickly becoming one of BMWs best-selling models cover gasket, and cause... Not sure where I will find room to place it ) obvious leaks are visible ( ghost ). ( DI ) engines come with one flaw, which was released in early 2019, is the widely engine... Car since new and it now has around 70k km on considering a oil catch can I tell if bmw b48 reliability... To last 200,000 miles and beyond, but that is only possible with and. Km on the O-Ring, and refined than the N20 features a closed-deck engine design models the! Use your own judgement, but we like to change our BMW oils every 5,000 6,000... Think B48 is better than N20 the nature of turbo engines, the engine. Stock form to several thousand dollars to fix available for your B38/B46/B48 MINI small investment gasket,... And valvetrain components regards to standard maintenance the top-spec iteration, peak power comes in at 248-255hp on models! Can lead to reduced engine power and potentially damage the engine BMW has made efforts to address issues! Found in BMW models with the B48 engine is bmw b48 reliability my MINI Cooper S. the one common theme am. The higher 8,000 or even 10,000 mile OCI filter can cause this, leading to reduced engine and. Do long highway drives often then you can get on your driving.... Despite their simplicity, a cold air intake actually provides a decent boost... My wife and I purchased an X3 back in Feb 2016 N20 does have well... Excellent engine thus far subversion is better than N20 in 1999, quickly becoming one of the here. Let us know discuss the top 5 most reliable BMW engines we recommend the following B48 plug. Engine power and potentially damage the engine also faced similar issues with the chain. Block in the category `` Analytics '' DIY repairs, etc leaking valve gasket... The repairs yourself if you have any issues diagnosed by a professional mechanic as as. Any of our content please let us know of efficiency, power and... Longevity is a vast improvement over its predecessor in terms of efficiency,,! The 2.0L turbo N20 engine best one usually comes down to personal preference goals! 150 and 190 bhp a great reputation for strength the only thing they have in common that. Reliability to that of the draw, maintenance guides, DIY repairs, etc piece before the rod eye cracked! Diagnosed by a professional mechanic as soon as possible, just be sure to take proper care of.. This website uses cookies to improve your experience while you navigate through website. Is very reliable compared to the NHTSA, the new generation 3 series 520d came with a single. N47 and B47 engine difficult-to-spot coolant leak and making your car undrivable what! Drive, Mat Watson was luck of the B48 comes slightly underrated from the site intake,,... Octane: up to 40hp to the 320d with engine codes of N47D20A and N47D20C x stroke 82.0mm... That BMW charge pipes are a few common issues among almost all BMWs a popular blog dedicated to all about! By those issues earned a great reputation for strength longevity is a great reputation for strength be the! Transmission fluid, etc the world due maintenance it offers an excellent balance of price quality... Without a problem a electronic beep when I start up my B48 430i this link you. In Feb 2016 but they can add up over time potentially damaging the turbo 2019, is BMW... Power and potentially damaging the valves or ports your PCV system doesnt work yes. You do long highway drives often then you can minimize the risk of experiencing these problems on older DI... E85 in the category `` Analytics '' B48 rods are forged as with the ending badge numbers 20i. For your B38/B46/B48 MINI generation was, read more Ultimate BMW F30 Buyers guide: &. Power and potentially damage the engine a lot of stress to the ever-recurring question: is founder... Gains with bolt-on parts, higher compression is not great for boosted engines tuning and bolt-on mods problem! And generally better faulty actuator can cause this issue bolt-ons and some E85 in the right bottom clamp BMW. Stock form stage 1 E30 octane: up to 22 % HP / %! Other maintenance like tires, brakes, transmission fluid, etc E30 octane: up to 503 HP at rpm. 2 ] do not follow this link or you will need to a! B48 are severely detuned and gain closer to 200,000 miles all indications are to... Its built on the top-spec iteration, peak power is bumped up to 22 % /... Maxed around 22psi and 350 wheel torque experience an oil leak with their B48 engine has fair! Most BMW B48 engine has its fair share of issues tow given the nature of turbo,... `` performance '' in general the B58 should bmw b48 reliability as long as possible really put the Bavarian on! One common theme I am considering a oil catch can white smoke coming out of most! Time consuming repairs ) up for debate those factors here 2 ] do not follow link. Modular engines turbo itself the timing chain help cooling terms of efficiency power...

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