Nissan brought the first, and only, variable-compression engine to market. But its future doesn't look bright.

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If you happen to be shopping for a four-door with more than four cylinders and under $25,000, here are some wildcards that ...

Toyota's turbocharged 2.0-liter four-cylinder that is currently under development has been designed with electrification in ...

The Cummins diesel engine has a long legacy, but which pickup trucks does it power? Here's what you need to know about each ...