Here's the story of perhaps the most legendary diesel engine ever made, the Cummins 5.9L.

We’ve all had that moment when a car just doesn’t want to cooperate. Maybe it […] ...

Mazda spent decades turning the rotary engine from a quirky engineering idea into a cultural touchstone, from early RX coupes ...

You'd think measuring an engine's displacement would be simple, but there's a long history of trying to figure out how to ...