Four California dynos tested the same Mustang Dark Horse and couldn't agree on what Ford's 500 hp claim means at the wheels ...

The Tesla Inc (NASDAQ:TSLA) Model S Plaid is one of the most powerful production vehicles on the road with a 0 to 60 time of 1.99 seconds, 1,020 horsepower and a peak of 1,050 pound-feet of torque in ...

Dynamometer tests are used to measure a car's torque and rpm response. But how do they get that information? And how reliable ...

"Dyno verified" can mean different things, depending on which dynamometer that car was rolling atop.

It's a story as old as hot rodding itself. It starts with the sales pitch-"Buy my widget and your engine will gain 50 hp"-and ends with a disappointed customer with a car that sure doesn't feel like ...