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

  Photo by Volodymyr Leush on Unsplash Most BMW owners don't spend much time thinking about engine codes. Fair enough — that's what mechanics are for. But if you've ended up here, something has probably prompted the question. Maybe a garage mentioned the B58TU. Maybe you're buying a used BMW and want to know what you're getting. Maybe your current car has developed a problem, and you're trying to make sense of it. Whatever brought you here, this is the no-nonsense guide. We'll tell you what the B58TU actually is, which BMWs have it, and what it's like to run day to day. Short sentences. Plain English. Everything you actually need. The B58TU — What Is It? BMW's B58 engine launched in 2015. It's a 3.0-litre, six-cylinder petrol engine — the kind BMW has always been known for. From the moment it arrived, it was clear this one was special. Smooth, punchy, and remarkably well-built for a modern turbocharged unit. A few years later, BMW went back in a...

Photo by Default on Unsplash If you own or are thinking of buying a BMW from the mid-2000s to the early 2010s with a petrol four-cylinder engine, there’s a very good chance it has the BMW N46 under the bonnet. It’s not a performance engine, and it never made the headlines the way the turbocharged units did. But it has powered an enormous range of BMWs over more than a decade, and it’s an engine that rewards good maintenance and suffers badly from neglect. This guide covers which models got it, what’s different about it compared to other BMW four-cylinders of the era, and what you need to keep an eye on as an owner. What Is the BMW N46 Engine? The N46 is a naturally aspirated inline-four petrol engine, which means no turbo, no supercharger. It came in two sizes: a 1.8 litre (N46B18) and a more common 2.0 litre (N46B20). BMW produced it from 2004 right through to 2015, making it one of their longest-running four-cylinder families of the era. The defining feature of the N46 is Valvetronic...