Although Subaru didn't invent flat engines, and isn't the only automaker still using them, those motors have become a defining characteristic of the brand. (The same can be said for all-wheel drive, ...

Engineered to keep things low, balanced, and smooth, the Subaru boxer engine might be one of the best-kept secrets in ...

While BMW certainly used to favor naturally aspirated engines, the German automaker has been relying on boosted fours and sixes much more frequently over the last 20 years. BMW has experimented with ...

When two equal turbochargers work independently, it's parallel. If a small turbocharger operates at lower rpm, then a larger one at higher rpm, it's sequential.