In an age when most automakers opt for the V6 or inline-4, BMW keeps chugging along with its inline-6 engine. Which version is more reliable, B58 or M54?

BMW's inline-six engines are loved among fans and have been around since the company's start, but only a select few can take the mantle as the most powerful.

The E24 BMW 6-Series stayed in production from 1976 to 1989 and was offered exclusively with six-cylinder engines, even in the high-performance M6.

BMW’s S85 V10 may be the best-sounding engine of its era, but it wasn’t bulletproof, especially in the hands of an unworthy owner.

Between the turbodiesel powerplant of the BMW M57 engine, and the turbo or supercharged Audi 3.0 V6, each is a great option for modified performance mills.