We wrote an article about the max boost the stock B48 turbo is capable of. 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 . In this section, well break down the above maintenance. 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. Stage 2 91 octane: up to 16% HP / 28% TQ Well, nothing is perfect. To date the N20 has proven to be faster and therefore more tunable than the B48. Otherwise, the N20 and B48 are both relatively reliable engines. Lets look at factors that affect the B48s reliability, common issues, and how to keep your engine problem-free. Gasket oil leaks can be expensive repairs at the shop. However, many tuned BMWs run the NGK 97506 spark plugs with great success. Stage 1 E30 octane: up to 20% HP / 28% TQ Plus, the N52 doesn't suffer from the E90 M3's rod-bearing issue. We are hoping to soon add an F80 M3 and F82 M4 GTS. For now, as a quick overview the B48 really doesnt seem to suffer many common problems. Like any engine, the BMW B48 can develop issues if not properly cared for. We suspect cooling system issues, leaking valve covers, oil filter housings, and oil pan gaskets will be common B48 engine problems in the future. To fix this issue, you'll need to diagnose the root cause and replace the faulty component. ago. It seems to be a slight improvement over the preceding N52 engine. 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. We also use third-party cookies that help us analyze and understand how you use this website. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. Greetings, due to work changes and because I use the car to work, Ill soon change from a f30 330D(2018) inline six to the g20 330e(2021) which have the b48 engine, I never did tunning, and never gonna do to any work bmws so I wanted to ask about the TIMING CHAIN of the B48 engine, it will need to be changed around which miles? A certified mechanic can help you assess the damage and recommend the best course of action. That said, were likely writing this article too soon. FBO B48 stands for full bolt-on. "Passenger restraint system malfunction" BMW X3 Whats This? Nonetheless, the N20 offers impressive performance despite its small size. Yes, the BMW B48 engine is very reliable compared to similar BMW engines. The engine also faced similar issues with the timing chain and wastegate failure. Stage 1 E30 octane: 21%HP / 24%TQ This can be an issue as they can end up bursting unexpectedly, causing a large coolant leak and making your car undrivable. A faulty ignition coil or a clogged fuel filter can cause this issue. Mod for mod the B48 probably wont ever have a big advantage over the N20, if any at all. 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. However, the higher horsepower B48 in BMW 35i models sees a drop to 9.5:1 compression. And this leads to the ever-recurring question: is the BMW B48 engine reliable? Toyota is also using the B48 engine in their Supra models. Again, pretty similar to the N20. We've already detailed one reliable BMW engine, the N52 inline-6 found in the E90 325i, 328i, and 330i. It's always a good idea to get a quote from a trusted mechanic before proceeding with any repairs, as this will give you an idea of what to expect in terms of cost. Yes, we believe the BMW B48 is a pretty reliable engine. So the B47 engines suffer from timing failure also. Though the bump in compression to 11 to 1 is questionable. The cookies is used to store the user consent for the cookies in the category "Necessary". That's about it. I'd love an F31 with the B48 freshxdough 2 yr. ago Its generally accepted that the N20 is about maxed around 22psi and 350 wheel torque. I've got a b48 engine 320i and thus far it's been faultless. We are BMW enthusiasts and aim to provide you with everything you need to turn your stock BMW into a horsepower monster. 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. https://static.nhtsa.gov/odi/tsbs/2022/MC-10212788-9999.pdf, Your email address will not be published. I've replaced a couple of water pumps but have yet to see one leak oil. *This article is in reference to the B48 engine itself. 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. Stage 2 93 octane: up to 18% HP / 28% TQ These are questions we see come up often. PIcs? Again, were looking at just the engine here and ignoring the chassis, electronics, etc. 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. Those who often use the B48s power and boost will land on the shorter-end. I will dyno it before mapping as it feels more like 200 bhp but I've been quoted 260 on the remap. The throttle actuator controls the amount of air entering the engine. Yes, we think the BMW B48 engine is fairly dependable. This mostly applies to N20s produced prior to 2015. Generally, higher compression is not great for boosted engines. A higher output version of the B48 is in some 2019+ 35i models. 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. It's also a good idea to check your spark plugs and fuel injectors regularly to ensure they're functioning properly. Though, these issues usually dont pop up until 80,000 100,000+ miles. The B48 also has drop-forged cracked connecting rods. The recall is US only at the moment. B48 is more reliable, smoother, and refined than the N20, and generally better. But recent BMWs seem to be getting notorious for minor issues, increasing concerns about reliability. Some BMW owners experience an oil leak with their B48 engine. The B48 in 20i and 30i models is looking to be an excellent engine thus far. I had the 2020 330e and I am currently having the 2021 530e. Anyways, B48 maintenance isnt horrible as shown above. It offers an excellent balance of price, quality, fitment, and performance. To do timing chain on the B48 the transmission will need to come off. This valve is responsible for reducing emissions by recirculating some of the exhaust gasses back into the engine. Our garage currently includes a 2008 135i, 2007 335i, and 2008 535i. Some B48 and B58 owners even go for thicker 0W-40 and 5W-40 oils. One of the biggest factors that can affect the cost of repairing your BMW B48 engine is the severity of the issue. The standard oil weight is 0W-20. It will, however, add a lot of stress to the turbo and engine. The reference to the B58 is in regards to engine strength with their closed deck blocks. However, you may make it well past without issues. Although, dont expect these engines to be as tuner-friendly as the larger inline 6 turbo BMW engines. Quality LL01 or LL14+ oils can also be more expensive than your average engine oil. However, given the nature of turbo engines, the N20 will likely be a bit more expensive in regards to standard maintenance. A tune and bolt-ons push the N20 to 300+whp. The cookie is used to store the user consent for the cookies in the category "Other. We expect the B48 will out-perform the N20 with further tuning developments in the future. Gains with bolt-on parts, higher octane, E85 mixtures, and larger turbos are even higher. Time will tell what may arise in the future. She has had the car since new and it now has around 70k km on. ~325-350wtq. Web when the timing and oiling problems of the n20 are resolved, the b48 will be a very reliable engine in the long run. 2. The 330e has the B48B20B and the 530e has the B48B20A. No, completely different design. 20i models generally receive the lower output B48 engines. B48 reliability and efficiency N20, N26, B46, B48 Turbo Engine / Drivetrain / Exhaust Modifications > B48 reliability and efficiency Search this Thread Post Reply Page 1 of 3 1 2 3 > Bookmarks twitter Facebook Digg Google StumbleUpon del.icio.us My Yahoo! At higher mileage, excess carbon build-up might lead to a rough idle. Thats it. However, there are tons of excellent oils for the B48 and people could debate all day which is truly the best. Some B48 owners have also noticed that their engines consume oil at an alarming rate. 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. 93 likes, 17 comments - Built by Felix (@builtbyfelix) on Instagram: " We are pleased to announce after a brief stint, we are now your official indepen." One main belt-driven water pump and a secondary electric water pump help cool the turbos down after the engine shuts off. Again, the same concepts apply with the HP discussion above. Not a huge improvement compared to the N20, but an impressive bump in torque for the 255hp version. The only thing they have in common is that they are both 2L turbos. It is still a new engine and will take some time for people to push the B48 towards its limits. Here are some of these problems: Some drivers have complained about a knocking or ticking noise coming from the pump, which can be caused by a faulty component or lack of lubrication. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. The great news is the B48 is off to an excellent start from a reliability perspective. The redesigned, third-generation X3 picks up and improves upon where the previous version left off, keeping its title as one of the best-driving compact SUVs. BMW is long known for their ability to build beautiful inline 6 engines. Bore x Stroke: 84.0mm (3.31) x 90.1mm (3.55), Injectors:Bosch solenoid style direct injectors, ***Specs for 2.0L BMW N20 engine (N13 and N26 have slightly different specs). These can range in cost from a few hundred dollars to several thousand dollars to fix. your BM3 estimated gain chart is incorrect, that is for the 35i B48 model that is already currently upgraded (tuned) to 302 hp. Save my name, email, and website in this browser for the next time I comment. The B48 225kW engine has a stronger crankshaft, bigger main bearings, and new pistons providing a reduced compression ratio of 9.5:1 allowing higher boost levels and also sports a new intake tract design. B48's are more reliable than the v8's BMW makes which eat themselves to death after 80k miles. 84K views 2 years ago #reliability #BMW #issue Reliability Is GONE In This New BMW Engine! Read our post about B48 mods here: BMW B48 300whp. 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. B48 feels more refined, but when I put the pedal to the metal, it took a little longer for turbo to spool up and the car to actually go compared to my N20. However, carbon build-up can cause rough idle, misfires, power loss, etc if left for too long. Bore x Stroke: 82.0mm (3.23) x 94.6mm (3.72). It's reliable, efficient, and sporty. 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. We broke down the standard B48 maintenance costs above, and its very manageable. Its a fairly simple fix and is covered under warranty. If an issue leads to a recall, the owner can get the vehicle repaired at no cost at a BMW dealership. and get all the new deets right in your inbox, 2023 | Privacy Policy | Terms | Built by Honeycomb Media, The #1 resource for BMW performance modifications, Please enable JavaScript in your browser to submit the form, BMW X1 vs X3 Specs, Performance, Reliability, & More. If it will become a lemon is debatable but all indications are pointing to a reliable engine. Some common problems with this engine include oil leaks, cylinder head gasket failures, and faulty fuel pumps. *Well write a B48 common problems post in the future. These cookies will be stored in your browser only with your consent. BMW N20 Engine Reliability, Known Issues, and More. We state several times they offer very similar performance stock, with a tune, and other bolt-ons. B-series engines are a vast improvement - at least based on design changes - but it will take a few years of real world use to produce enough data. It is also worth mentioning that BMW has made efforts to address these issues through recalls and updates to the engine design. Is the B48 reliable? My n20 120i 2016 is w that same noise Is that normal? N20 (low-compression 28i) An upgraded version producing 302hp is found in new 35i models. Carbon buildup is a common issue that can affect any engine with direct injection such as the B48. The larger B58 engine also overshadows the B48 for tuning potential. 1) Is the BMW B48 engine prone to issues? 16K miles. Thats about it. It was shown off in May 2019. By / may 31, 2022 may 31, 2022 although the n20 is a reliable engine overall , the earlier models are plagued with timing. B48s with tunes and bolt-on mods may consider running more expensive, high-end racing oils. If you do long highway drives often then you can get away with the higher 8,000 or even 10,000 mile OCI. These engines perform great and have very good fuel economy. 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. Design. However, we believe it is a step in the right direction. 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. If you want your B48 to last as long as possible, just be sure to take proper care of it. This is not meant to be a knock towards the N20s performance. One such reservation is about the B48 engine. Some of these examples are engines that have not been maintained with regular oil changes. The limits of the B48 are still rather unknown. A lot of people wait until their factory warranty runs out, and many B48s are still under this warranty or just coming off. Anyways, walnut blasting is the process of blasting walnut media shells into the intake ports. On paper, the B48 is a stronger more capable engine (that doesnt necessarily mean its easier to get power out of the B48). '06 they did add it back. Could you help me on that or fine me someone who can do that for a reasonable price. Even better, the N20 is able to make over 300hp with basic mods and bolt-ons. Required fields are marked *. Sn1ster 4 mo. BMW recommends running LL-14 or LL-17 oils on the BMW B48 engine. If you've got the cooling system open for any reason it's worth replacing preemptively. Dmitry has been an editor and author at Cararac.com since 2015. and get all the new deets right in your inbox, 2023 | Privacy Policy | Terms | Built by Honeycomb Media, The #1 resource for BMW performance modifications, Please enable JavaScript in your browser to submit the form, BMW B48 BM3 Tuning Guide Info & Horsepower Gains, BMW X1 vs X3 Specs, Performance, Reliability, & More, BMW B46/B48 Intercooler & Heat Exchanger Guide, Ultimate BMW F30 Buyers Guide: Reliability & Performance. The base 3 series for the 2021 model year is the 330i sedan and it has a 2.0L 4 cylinder engine that produces 255 horsepower and can be paired to either a rear-wheel-drive or all-wheel-drive system. Compared with its N20 predecessor, the B48 uses a more undersquare design. You hear it on a cold start and then when it reaches normal temperature. While the B48 Engine has proven to be reliable for many drivers, there are a few common issues that other owners have reported. ago. The most important aspect is sticking with a quality, trusted tune. We know the older 2.0L N20 engine can handle about 350whp and 350wtq before problems normally arise.

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