SkyActiv-X engine may have cracked the HCCI engine challenge. It uses a spark plug to address typical HCCI problems but can ...

Mazda’s rotary development is heating up again, and the dream of a new RX-7 might finally be inching closer to reality after ...

Currently, the turbocharged six-cylinder unit maxes out at 340 hp in the CX-90 (although, piggyback tunes are seeing numbers ...