Mazda unleashed its all-encompassing Skyactiv automotive technologies in 2010 to increase fuel economy with zero penalties to handling and performance. Although Skyactiv became increasingly known for ...

As we face the end of the internal-combustion era, the straight-six has made an unlikely comeback. Well, unlikely might not be the right word for an engine configuration of such fundamental rightness.

Putting into production an engine with a variable-compression ratio has been an elusive goal since the first patent for one was filed in 1928. Now, after nearly 100 years of failed experiments and ...