Inline-six engines are thriving. From BMW and Mercedes to Mazda and Stellantis’ Hurricane, see which car companies still build the world's smoothest engines.

Adding real horsepower without tearing your car down to the firewall is not a fantasy. With the right mix of tuning, airflow, ...

There's a certain kind of thrill in modifying your car. A fresh set of parts, a wrench in hand, and the irrational confidence that this mod is going to unleash hidden potential. But here's the thing — ...

In theory, Wankel-style rotary internal combustion engines have many advantages: they ditch the cumbersome crankcase and piston design, replacing it with a simple, single-chamber design and a thick, ...

The mid-engine sports car is an increasingly rare breed, but Lotus still carries the torch with its Emira, which is available with a choice of supercharged V6 or turbocharged inline-four cylinder ...

NASCAR Cup engines live in a strange space: they are tightly regulated, largely hand built, and expected to survive hours at ...