MT Auto Parts Blog | Expert Tips for BMW enthusiasts on BMW Parts, Accessories, Engines and More

Image: BMW S58B30A complete engine with 38K miles for sale at MT Auto Parts for £7,699.99 The S58 is BMW M's current flagship straight-six, the engine in the G80 M3, G82 M4, G87 M2, and X3 M / X4 M. It replaced the S55 from 2020 and was widely praised on launch for being more powerful, cleaner, and, crucially, more refined than its predecessor. The question that BMW enthusiasts have been asking since is: how reliable is the BMW S58 engine ? The honest answer is: considerably better than the S55 it replaced, and with a growing body of evidence suggesting it is one of the more durable BMW M engines in recent history. But it is not without its issues, and some of those issues are specific enough to matter if you're buying a used S58-powered car. What Is the BMW S58 Engine? The S58 is a 3.0-litre twin-turbocharged inline-six petrol engine developed by BMW M. It produces 480bhp in standard G80 M3/G82 M4 tune, 503bhp in Competition specification, and 530bhp in the Competition xDrive ...

Image: BMW B38A15A Complete Engine with just 24K miles for sale at MT Auto Parts for £1,429.99 Three cylinders in a BMW. It still surprises people who haven't followed the brand's engine development over the past decade. The B38 is BMW's 1.5-litre turbocharged three-cylinder petrol engine — a unit that, on paper, sounds like an unlikely fit for a brand that built its reputation on silky inline-sixes and high-revving four-cylinders. In practice, the B38 is a considerably more capable and more interesting engine than its cylinder count suggests. It is part of BMW's B-series modular engine family and shares significant architecture with the four-cylinder B48 and six-cylinder B58, the same bore diameter, the same engineering philosophy, and many of the same BMW engine parts . But it is not without its problems. This guide covers what the B38 is, which cars it powers, what goes wrong, and how the reliability picture looks in the real world. What Is the BMW B38 Engine? The B3...

  Photo by Sevak Khachatoorian on Unsplash The BMW N20 engine has a complicated legacy. Introduced in 2011 as a replacement for the naturally aspirated N52 six-cylinder, the N20 was BMW's first turbocharged four-cylinder in the modern era — a 2.0-litre unit designed to deliver six-cylinder performance with four-cylinder economy. In terms of outright capability, it largely delivered on that promise. In terms of long-term reliability, it developed a reputation that is difficult to ignore. If you own an N20-powered BMW or are considering buying one, this guide covers everything you need to know: what goes wrong, when it goes wrong, how serious each fault is, and what the repair costs look like in the UK. What Is the BMW N20 Engine? The N20 is a 2.0-litre turbocharged inline-four petrol engine fitted across a wide range of BMW models from 2011 to approximately 2017, when it was progressively replaced by the B48. The N20B20A is the primary variant — the code you'll see in parts cata...

Image: BMW B48B20A complete engine with just 25K miles for sale at MT Auto Parts for £1,899.99 The BMW B48 engine has a strong reputation, and for good reason. Introduced in 2015 as the replacement for the N20, the B48 2.0-litre turbocharged four-cylinder addressed most of the complaints that had dogged its predecessor and arrived as part of BMW's thoroughly engineered B-series modular engine family. In nearly a decade of production, it has proven to be a capable, enjoyable engine that holds its own against comparable units from Audi and Mercedes. That said, it is not without its issues. The B48 has specific weaknesses that owners and prospective buyers should know about. Not because they make it a bad engine, but because knowing what to watch for is the difference between a £200 repair and a £2,000 one. This guide covers everything: what the B48 engine is, which cars it powers, what goes wrong, how to maintain it, and what to look for if you're buying a B48-powered BMW or loo...