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

  Photo by Akbar Nemati on Unsplash BMW goes into limp mode. Power drops. You pull over, call a garage, they plug in a diagnostic tool and tell you it is the turbo. Immediately you start imagining a bill somewhere north of two thousand. Before you get there, it is worth understanding exactly what they have found. A turbo actuator fault and a failed turbocharger are not the same thing, and confusing the two is one of the more expensive mistakes a BMW owner can make. The actuator is a separate component that controls the turbo, and on many occasions fixing the actuator is all that is needed. The turbo itself is fine. What the Turbo Actuator Actually Does Most BMW diesel engines use a variable geometry turbocharger. Inside the turbo there is a ring of small movable vanes that change angle depending on how hard the engine is working. Close them down at low revs and exhaust gas rushes past faster, spinning the turbo up quickly. Open them at higher revs and the engine can breathe more fr...

  Image: BMW B47C20B complete engine with just 50K miles for sale at MT Auto Parts for £3,199.99 The B47 is BMW's answer to one of its own mistakes. When the N47 diesel developed a reputation for catastrophic timing chain failures, chains snapping at the back of the engine, behind the flywheel, turning reliable diesel cars into very expensive paperweights, BMW went back to the drawing board. The B47 engine arrived in 2014. It moved the timing chain to the front of the engine, where it belongs. It improved fuel efficiency. It met Euro 6 emissions standards. And it built a reputation as one of the better modern diesel engines in its class. That reputation is mostly deserved. But the B47 is not without its own problems, and some of them are serious enough that anyone buying a used car with one fitted should know about them before handing over any money. This guide covers what actually goes wrong, when, and what it costs to fix. What the B47 Is and Where It's Fitted The B47 is a 2...

  Photo by igor constantino on Unsplash The DPF warning light is one of the most common things BMW diesel owners deal with. And for most people, when it appears, the immediate reaction is panic — usually because the first quote they get from a garage involves the word 'replacement' and a number with four figures in it. Here's the thing: in many cases, you don't need a replacement at all. The filter just needs to be cleaned. Understanding the difference and acting at the right time can save you hundreds of pounds. This guide explains what the DPF is, what goes wrong, how to spot it early, and what it actually costs to sort out. What Is the BMW DPF? BMW DPF stands for Diesel Particulate Filter. It sits in the exhaust system and catches the fine soot particles that diesel engines produce. Without it, those particles go straight into the air you breathe. To stop it from blocking up permanently, the DPF periodically burns off the trapped soot in a process called regeneratio...