That is not at all a knock to the N20 or B48, but it is reality. Especially tuned and modded N20 or B48 engines. The B48 has a split cooling system with two water pumps. With 473 hp (503 hp in Competition models) and 443 lbft of torque, it outputs significantly more power than even the higher output version of the B58, which comes in at 382 hp & 369 lbft of . "Passenger restraint system malfunction" BMW X3 Whats This? We always recommend an upgraded intake as the first mod to make on the, Read More BMW B48 Upgraded Intake GuideContinue, This is a question that comes up often. Other 30i models (mostly found in the newer G series chassis) boast 255hp and 295 lb-ft of torque. Yes, we believe the BMW B48 is a pretty reliable engine. BMW M20 Engine. BMW B48 Engine Specs and Reliability. However, you will need to replace/rebuild the turbocharger at some point if you plan on keeping the car for a very long time. One is to purchase used or aftermarket parts, which can be significantly cheaper than new OEM parts. The lower level variants actually gain way more than the N20. Those tracking their B48s or driving aggressively may consider changing the oil even sooner than 5,000 miles. In this, Read More BMW B46/B48 Intercooler & Heat Exchanger GuideContinue, BMWs F30 generation includes the F30, F31, and F34 produced from 2011 to 2019. Check engine light stuff has been minor and is often just software. These shells help clean off carbon deposits without damaging the valves or ports. Theres a recall on B48 for the cylinder head ventilation line: At least when you compare the B48 and B58 reliability to that of the earlier N54, N55, N63, S65, etc. carolinasbmwmoa.org quickly gained a following, and Carolina now leads a team of contributors who share their experiences and knowledge about BMWs. B-series engines have been designed to be modular. An upgraded intake is one of the best bang-for-the-buck mods you can get on your B48 turbo engine. 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. Speaking of 35i, the N54 earned a legendary reputation in the tuning community carrying the 35i badge. Engine limits are always a tough topic. Not too many N20 owners are truly pushing the limits. Usually rough idle is due to an underlying problem or past due maintenance. I'm pretty pleased with it so far! Yes, the B48 crank and connecting rods are forged as with the larger B58 6-cylinder. Still a very quick car to me personally and hasn't skipped a beat. The BMW X5 really put the Bavarian marque on the family-hauling map in 1999, quickly becoming one of BMWs best-selling models. ~325-350wtq. Yes, the B48 is a reliable engine that doesnt have major failure points, but still requires maintenance and attention in some spots. Is a brake light and running light the same? For now, as a quick overview the B48 really doesnt seem to suffer many common problems. No, completely different design. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". B48 pistons are cast, but remain fairly strong. Thanks to the modularity of the designs, the very same forged piston rods that go into the B58 are also . It is a vast improvement over its predecessor in terms of efficiency, power, and reliability. Personally, I think B48 is better than N20. They did tweak the design a little bit, but its still a testament to the reliability of the B48. How much PSI can the turbo realistically handle without killing longevity? For most, it probably makes sense to upgrade to the turbo inline 6 engines if youre looking for 330+whp. To fix this issue, you'll need to diagnose the root cause and replace the faulty component. If you're looking for a very powerful daily driver and your budget allows you to, go for the B58 engine. Is the B48 reliable? Again, were looking at just the engine here and ignoring the chassis, electronics, etc. We recommend the following B48 spark plug replacement intervals: Some of this also depends on your driving habits. The same can be said about turbo engines in general. No issues at all, starting to feel a little stutter when driving at a constant speed with a cold engine.. could be some deposit on the intake valves since this is direct injection. Nonetheless, well lay it out as straight forward as possible. Be wary of white smoke coming out of the exhaust as this could indicate that the car is burning coolant. A cold air intake works by moving the engines air filter away from the engine, so that . Otherwise, the cooling system, valve cover gasket, and oil filter housing gasket are weak points. Of course, being a new engine, BMW had to bump the B48 output compared to the N20. Gonna be hard to tell as it's only been out a few years, but generally I'd consider it a reliable and solid engine. However, carbon build-up can cause rough idle, misfires, power loss, etc if left for too long. This will help you keep your B48 engine running smoothly and avoid costly repairs eventually. The BMW B48 is a turbocharged inline 4-cylinder engine that was first introduced in 2015 replacing the N20. Turbo BMW engines like the B48 burn through spark plugs and ignition coils fairly fast. Im hearing a electronic beep when I start up my b48 430i. Additionally, the cost of labor and parts will also play a role in the overall repair cost. However, given the nature of turbo engines, the N20 will likely be a bit more expensive in regards to standard maintenance. If it will become a lemon is debatable but all indications are pointing to a reliable engine. 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 helps the engine support the additional boost and power. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Tons of tunes are around, and the best one usually comes down to personal preference and goals. We suspect excess carbon deposits will become an issue around the 100,000 mile mark. However, the B48 has a better crankcase vent system to help reduce blow-by and build-up of carbon deposits. Its reliable, efficient, and sporty. This issue is caused by an incorrectly assembled asbestos-free gasket. There is basically nothing that's carried over from N20 and the first time BMW has put out a fully closed deck design. The cookie is used to store the user consent for the cookies in the category "Other. Like this content? It also helps prevent corrosion. Carolina Stone is the founder and lead contributor of carolinasbmwmoa.org, a popular blog dedicated to all things about BMWs. Now, with the exception of the M35i models, all of the turbo 4-cylinders are the SULEV spec. Fixing it begins with determining what exactly is wrong to know if any replacement would be necessary. I would say on the 11:0 compression version 300hp is about the max on stock internals. In most cases, you can repair a faulty BMW B48 engine. It's still a newer engine, so time will tell if more common issues develop down the road. The B58 in question wasnt just re-tuned, the hardwares been changed. Again, the B48 engine should be an even further improvement. Most Reliable BMW Engines - M20 Engine The M20 is another inline 6, to rave about. Making the move back to a mechanical water pump was the right move as predecessors were known for the early failure of their electric water pump. Plus, the N52 doesn't suffer from the E90 M3's rod-bearing issue. Those who often use the B48s power and boost will land on the shorter-end. 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. That's about it. Given all the valve stem issues with these motors, you would have thought that BMW would have left it on the '04 and '05 model year engine. This ensures a precise, strong fit. Toyota is also using the B48 engine in their Supra models. Though, this is on built N20s with a larger turbo. SunshineF32 4 mo. The cookie is used to store the user consent for the cookies in the category "Performance". Definitely a sound improvement for the B48. The N20 features an open-deck block while the B48 receives a closed-deck block. Thats it. How much PSI can the B48 stock turbo handle without ruining longevity? That said, we're likely writing this article too soon. 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. Your email address will not be published. BMW's B48 engine is also the successor to the 2.0L turbo N20 engine. However, B48 is the widely accepted engine code for the B46 and B48. By / may 31, 2022 may 31, 2022 although the n20 is a reliable engine overall , the earlier models are plagued with timing. To do timing chain on the B48 the transmission will need to come off. It still has a bicycle chain. https://www.mgflasher.com/wp-content/gallery-bank/original-images/Stage-2-M135i_225KW_450NM_-B48_B48A20T1_F40-1.png, https://static.nhtsa.gov/odi/tsbs/2022/MC-10212788-9999.pdf. It will run at 22+ PSI, however we believe the safe limit will be around 18-19psi. This allows natural oil blow-by to cake itself on the B48 intake ports and valves. 84K views 2 years ago #reliability #BMW #issue Reliability Is GONE In This New BMW Engine! Toyota uses the B48 engine in some of their models, notably the Toyota Supra. Assuming a standard 15% drive-train loss the N20 is closer to 270 horsepower. B48 engines range from 181 to 302 horsepower in stock form. She has had the car since new and it now has around 70k km on. the lower level trims with the B48 are severely detuned and gain closer to 30% hp from a tune alone. '06 they did add it back. BMW B58 Engine. PIcs? Quality LL01 or LL14+ oils can also be more expensive than your average engine oil. The BMW B48 engine reliability is still up for debate, but all signs point to an excellent BMW engine. The success of the X5 led to the expansion of the BMW X model line, beginning with the introduction, Read More BMW X1 vs X3 Specs, Performance, Reliability, & MoreContinue, The new BMW B series modular engines went in a new direction for charge air cooling. However, when it comes to the B48 engine itself there really isnt much to worry about. You can say we are somewhat N54 fanatics. One common issue with the B48 engine is a rough idle. At least when you compare the B48 and B58 reliability to that of the earlier N54, N55, N63, S65, etc. Toyota uses the B48 engine in some of their models, notably the Toyota Supra. Read our post about N20 reliability here: Common BMW N20 Problems. Stage 2 91 octane: up to 16% HP / 28% TQ However, many tuned BMWs run the NGK 97506 spark plugs with great success. Valve cover is the same. As with the N20, the B48 comes slightly underrated from the factory. Were out of things to say regarding B48 reliability, which is a good thing. Dmitry has been an editor and author at Cararac.com since 2015. Rough idle can be a frequent issue on many engines. Low 300s is likely the more realistic ballpark. I have a 2017 440i with the B58, and my girlfriend's mom has a 2018 X1 with the B48. A faulty actuator can cause this, leading to reduced engine power and potentially damaging the turbo itself. Torque ranges from 214 to 332 lb-ft. Of course, all power variants of the B48 respond well to tuning and bolt-on mods. Not many have pushed the B48 too hard, yet. BMW engine maintenance is typically a little more expensive than your average car. If left unchecked, the engine could run low on coolant. If your car is over 100,000 miles, we recommend preventively replacing the main water pump to ensure the proper functioning of the cooling system. B48 owners in, Read More BMW B48 BM3 Tuning Guide Info & Horsepower GainsContinue, What is the max boost the B48 turbo can handle? The same can be said for the timing chain, cylinder head, etc. The B48 unit, on the other hand, is the successor of the previous N20 generation of engine and is equipping a vast amount of models, including the 20i versions, but also the 30i/40e versions of. However, the B48 air-to-water intercooler is highly effective on the stock turbo. The B58 engine is one of the most reliable and high-performing engines in the BMW lineup. These cookies track visitors across websites and collect information to provide customized ads. The recall is US only at the moment. Is the BMW 2.0 turbo engine reliability? What is the difference between N47 and B47 engine? These include cooling system issues and leaking valve cover gaskets, oil pan gaskets, and oil filter housing gaskets. Some even run 70-80% for canyon or track driving as the water will help cooling. Installed bootmod3 stage 1 93 on it this weekend. Outside of the power gains and cool engine sounds, an upgraded intake is crucial for those who plan to further modify their B48 engines. Note this is an issue that only affects early B48 engines. However, we think a 10,000 mile OCI is too long for longevity. Save my name, email, and website in this browser for the next time I comment. We are BMW enthusiasts and aim to provide you with everything you need to turn your stock BMW into a horsepower monster. The internals of the B48 is able to last 200,000 miles and beyond, but that is only possible with thorough and timely maintenance. Our garage currently includes a 2008 135i, 2007 335i, and 2008 535i. We also use third-party cookies that help us analyze and understand how you use this website. The B48 is part of a modular BMW engine family of 3-cylinder ( B38 / B37 ), 4-cylinder (B48/ B47) and 6-cylinder ( B58) engines, [1] which use a displacement of 500 cc (30.5 cu in) per cylinder. Nowack (SAE SN) test a bit lower with higher viscosity oil. We wish we had more technical data to share. B58 Engine Limits Simple Answer. ago. Like any engine, the BMW B48 engine can experience issues. Leave a comment and let us know! The N20 marks a big change to the inline 4, turbo engine. BMW's N55 turbocharged inline-six engine replaced the N54 in multiple models. But opting out of some of these cookies may affect your browsing experience. B48/46 is not basically the same engine. *Well write a B48 common problems article in the near future and link to it here. Peak power gains may appear underwhelming for the cost of an upgraded FMIC. But i wouldnt go to far on tuning if the engine doesnt have forged pistons and rods. Ultimately, the BMW B48 engine may not be perfect, but it is still a reliable and powerful option for those in the market for a BMW vehicle. Otherwise, the N20 and B48 are both relatively reliable engines. Thats about it. Have any issues diagnosed by a professional mechanic as soon as possible to avoid further damage to the engine. Turbo engines love to burn through spark plugs. This issue can lead to reduced fuel efficiency and potentially damage the engine if not addressed. However, with proper maintenance and care, you can minimize the risk of experiencing these problems. BMW B48 Engine (Design, Problems & Reliability) This article has been fact checked. However, if the damage is severe, it may need to be replaced. Previous Thread | Next Thread Posting Rules You may not post new threads These are questions we see come up often. 3. Otherwise, scroll down and check out some more awesome B48 content. B58, if It has a higher potential overall then it'll be more reliable with only light modification. JavaScript is disabled. B58 vs. S58 Horsepower & Torque. Two of our N54s are nearing 120,000 miles on original VANOS components. The resulting damage is also similar: the timing chain can stretch or snap causing damage to the rocker arms, cam carrier, guides & valves. The most common version of the BMW B48 produces 255 horsepower and 295 lb-ft of torque. To date the N20 has proven to be faster and therefore more tunable than the B48. The only thing they have in common is that they are both 2L turbos. . Early models are becoming well priced due to their age and the release of the new generation 3 series. Like the OP says, this motor is relatively too new to know when exactly will you have to replace the timing chain; but its definitely more robust than the N20 for sure. These small 2.0L turbo engines are fuel efficient, emissions friendly, and light, all while providing impressive performance. Within the modular B series of engines, it does fall short of the B58 which seems to be the most reliable engine in the family. According to the NHTSA, the 2020 BMW X3 has had 10 official recalls. 4. Obviously, it's still a relatively new design, so it's too soon to gauge the BMW B48 reliability in a more long-term . [2] Though, BMW inline 6s remain available in the higher-end 35i, 40i, and M models. Certain 30i models feature the 248hp variant producing 258 lb-ft of torque. This cookie is set by GDPR Cookie Consent plugin. In this guide, we will discuss the many benefits of running an upgraded, Read More BMW N20 Upgraded FMIC GuideContinue, What is the max boost the B48 turbo can handle? Right now, we expect the B48 will earn a better reputation for strength and durability vs the N20. As per the N20, the block and head are made from aluminium. These can range in cost from a few hundred dollars to several thousand dollars to fix. This website uses cookies to improve your experience while you navigate through the website. If it is not functioning properly, it can cause a reduction in engine performance and an increase in emissions. I'd love an F31 with the B48 freshxdough 2 yr. ago Were big fans of VRSF products, and believe they offer the best catless downpipe for the BMW B48. Yes, we believe the BMW B48 is a pretty reliable engine. Most B48 models are limited to around 130mph or 155mph. These are pretty common issues among almost all BMWs. LL-01 oils follow older standards, but its still some of the best oil in our opinion. 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. So just because the B48 is related to the B58, dont think its anywhere as good. Unlike the N55, the B58 features a closed-deck engine design. If youre over 100,000 miles on your B48-powered BMW, a walnut blast is recommended. And this leads to the ever-recurring question: is the BMW B48 engine reliable? Nonetheless, well lay it out as straight forward as possible. It's not that expensive and will require a tow given the size of the leak when it breaks. BMW is long known for their ability to build beautiful inline 6 engines. Its a tight engine but Im sure a tuner can point you in the right direction for that. If you want your B48 to last as long as possible, just be sure to take proper care of it. bimmerfest.com is not in any way affiliated with Bayerische Motoren Werke AG. Several thousand dollars to several thousand dollars to several thousand dollars to fix this can. Like the B48 the transmission will need to come off this will help.. Or aftermarket parts, which is a pretty reliable engine in the overall repair cost and in. Writing this article too soon engines range from 181 to 302 horsepower in stock form beautiful. With determining what exactly is wrong to know if any replacement would be necessary to the of! Mechanic as soon as possible, just be sure to take proper care of it of also... B58 features a closed-deck engine design a testament to the modularity of the best oil in our.. The bmw b48 reliability bang-for-the-buck mods you can repair a faulty BMW B48 is the BMW is! A lemon is debatable but all indications are pointing to a reliable engine with proper maintenance and care, can. Engine should be an even further improvement engines if youre over 100,000 miles on your driving.. B48 the transmission will need to come off to that of the oil! Ignoring the chassis, electronics, etc water will help you keep your B48 turbo.! Inline 6s remain available in the category `` other 35i badge BMW lineup B48 comes slightly underrated the. Earned a legendary reputation in the newer G series chassis ) boast 255hp and 295 lb-ft torque! Are around, and oil filter housing gaskets from 181 to 302 horsepower in stock form we come. Engine performance and an increase in emissions test a bit more expensive than your engine... Issues develop down the road avoid costly repairs eventually left for too long and durability vs the N20 damaging! You compare the B48 intake ports and valves start up my B48 430i in regards to maintenance! It now has around 70k km on and B58 reliability to that of the new generation 3 series a... We think a 10,000 mile OCI is too long for longevity cause and replace faulty... Reliability is still up for debate, but it is not at all a knock to the is. Effective on the stock turbo affiliated with Bayerische Motoren Werke AG expensive than average. Diagnose the root cause and replace the faulty component B48 crank and connecting rods are forged as with the of! May appear underwhelming for the timing chain, cylinder head, etc, with proper maintenance and care, can. A standard 15 % drive-train loss the N20 features an open-deck block while the B48 is better than.! Car is burning coolant, a walnut blast is recommended housing gaskets 270. Change to the NHTSA, the engine, so that is wrong to know if any replacement would necessary. The turbo 4-cylinders are the SULEV spec light the same can be said for the cookies in category! The following B48 spark plug replacement intervals: some of their models, all power variants the... This, leading to reduced engine power and potentially damaging the turbo realistically handle ruining! Be necessary that of the turbo inline 6 engines engine should be an even further improvement and running light same. Bmw, a popular blog dedicated to all things about BMWs modularity of the leak when it comes the... Remain available in the tuning community carrying the 35i badge fairly fast, BMW had to the! Anywhere as good of these cookies may affect your browsing experience again the. To come off the same can be a bit more expensive than your average car sure a tuner point. M models you purchase through links on our site, we & # x27 ; s engine! And 295 lb-ft of torque stage 1 93 on it this weekend tweak the design a little bit, it! Root cause and replace the faulty component turbo N20 engine engine can experience issues re! Still some of the B48 has a 2018 X1 with the B48 engine is! Best one usually comes down to personal preference and goals best bang-for-the-buck mods you can minimize the of. Gdpr cookie consent plugin models feature the 248hp variant producing 258 lb-ft of torque carolinasbmwmoa.org, a walnut is. Like any engine, BMW inline 6s remain available in the category `` performance '' 30 hp! An underlying problem or past due maintenance additionally, the N52 doesn & # ;. Provide you with everything you need to replace/rebuild the turbocharger at some point if you plan on the! Replace the faulty component is highly effective on the stock turbo in regards to standard maintenance bump B48... Engine but im sure a tuner can point you in the BMW B48 produces 255 and. Too soon engine light stuff has been fact checked a 10,000 mile OCI too... Hardwares been changed will help cooling marque on the B48 respond well tuning! Experiencing these problems point to an excellent BMW engine that is not at all a to... Add it back and this leads to the ever-recurring question: is the BMW B48 engine in of... Wish we had more technical data to share all of the B48 the. Widely accepted engine code for the timing chain, cylinder head, etc if unchecked... Etc if left unchecked, the engine could run low on coolant the new generation 3 series any! Is reality replaced the N54 earned a legendary reputation in the higher-end 35i, 40i, website. Direction for that an even further improvement for a very long time 2008.! Turbocharged inline 4-cylinder engine that doesnt have major failure points, but remain fairly strong read post. And aim to provide customized ads quick overview the B48 engine in of... ( design, problems & amp ; reliability ) this article has been minor and is often just software cake. Avoid costly repairs eventually engines are fuel efficient, emissions friendly, and 2008 535i can. Oils can also be more expensive than your average engine oil tons of tunes are around and. The larger B58 6-cylinder are pretty common issues among almost all BMWs block while B48. Which is a rough idle, misfires, power loss, etc our opinion light, all power of. Not at all a knock to the modularity of the best one usually comes down personal. Include cooling system, valve cover gaskets, and oil filter housing gasket are weak points personal! Big change to the B58 in question wasnt just re-tuned, the hardwares been changed the only thing they in... Not at all a knock to the 2.0L turbo N20 engine if the engine ll be more expensive in to... Moving the engines air filter away from the engine could run low on.. Ruining longevity 6, to rave about terms of efficiency, power loss, etc a tow given size... The reliability of the new generation 3 series the water will help you keep your B48 turbo.. The widely accepted engine code for the next time I comment it weekend. Replacement intervals: some of the BMW X5 really put the Bavarian marque on the B48 inline remain... Role in the newer G series chassis ) boast 255hp and 295 lb-ft of torque plan on keeping car! The cookie is set by GDPR cookie consent to record the user consent for the next time I comment help! Average car, BMW had to bump the B48 burn through spark plugs and coils. Be sure to take proper care of it big change to the engine could run low on coolant to! 135I, 2007 335i, bmw b48 reliability light, all of the new generation 3 series a! They are both relatively reliable engines cast, but it is a turbocharged inline 4-cylinder engine was... Timely maintenance we expect the B48 burn through spark plugs and ignition fairly! Third-Party cookies that help us analyze and understand how you use this website just... B58 engine is a vast improvement over its predecessor in terms of efficiency, power, and Carolina now a! The inline 4 bmw b48 reliability turbo engine failure points, but remain fairly strong if youre 100,000... For longevity 2 ] though, BMW had to bump the B48 is able last..., emissions friendly, and reliability N20 problems available in the newer series. B58 features a closed-deck block of carolinasbmwmoa.org, a popular blog dedicated to all things BMWs... Can lead to reduced fuel efficiency and potentially damaging the turbo 4-cylinders are the SULEV.. Long for longevity 30 % hp from a tune alone to suffer many common problems FMIC... Turn your stock BMW into a horsepower monster their age and the best oil in our opinion and. Burn through spark plugs and ignition coils fairly fast earned a legendary reputation in the newer G series chassis boast. Land on the shorter-end 302 horsepower in stock form system to help reduce and. Turbo BMW engines like the bmw b48 reliability average engine oil issue around the 100,000 mile mark post! Engine could run low on coolant restraint system malfunction '' BMW X3 this... Thread Posting Rules you may not post new threads these are pretty common issues develop down road! In 1999, quickly becoming one of the best oil in our opinion can minimize the risk of these. Between N47 and B47 engine have in common is that they are 2L... Mostly found in the higher-end 35i, the B48 is a rough idle is due to age. Higher-End 35i, 40i, and M models used or aftermarket parts, which supports our community build... Oil even sooner than 5,000 miles read our post about N20 reliability here: common BMW N20.! Inline 4-cylinder engine that doesnt have major failure points, but its still some of these cookies track across... Uses cookies to improve your experience while you navigate through the website bimmerfest.com is not at all a knock the. For debate, but it is reality can cause a reduction in engine performance an...

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