The story behind BMW's unique quad-turbo diesel engine, its impressive performance, and how it stacked up against its rivals ...

In terms of innovative engine tech, Mazda's SkyActiv-G engine and Toyota's 2.5-liter Dynamic Force engine are two industry ...

Low- And High-Compression Fuel Economy Engines: The Techniques Are About The Same, But The Approach To Each Is Somewhat Different. A.Most stock cylinder heads have factory-cut undercuts of the type ...

The Mazda 3 Turbo AWD might be the biggest secret in the tuner world, and here’s how easy it is to gain power.

Nissan made a lot of noise when its variable-compression turbo engines hit the market a few years back, snagging awards and headlines left and right. However, those two power plants—the 1.5-liter ...

While we like to think of 2002 as being part of a high-tech age, our beloved internal combustion engine hasn't really changed much in the last 50 years. We're still using pushrods and overhead valves, ...

On paper, Nissan's variable-compression turbocharged engine should have been pretty awesome. Since it could change its compression ratio on the fly, it promised the power of a bigger engine when you ...