Inline-six engines are the beating heart of a certain German automaker - here's the most powerful of them all.

This BMW engine is used in some of the finest cars of the 1990s and pushes them to high-revving and tire-screeching levels - ...

In 2025, small-displacement motorcycles are everywhere, but nearly all of them rely on parallel twins or singles. That keeps costs low, but it robs riders of the high-revving soundtrack and smoothness ...