Your fuel economy is getting worse most commonly from underinflated tyres, a clogged air filter, worn spark plugs, a fau ...

It seems weird to learn about breaking “emissions control news,” even as the present administration rolls back emissions regulations, but remember that most such rollbacks have affected CO2 emissions.

The OBD-II port. It's one of the most fascinating features of most modern cars, and, for lack of a better word, it's a portal into all of your car's deepest and darkest secrets. No, it's not hiding a ...

How do I turn off the MIL (Malfunction Indicator Light) on the dash of my 2014 Jeep Compass? This light is properly called the Malfunction Indicator Light, so it’s kind of like a check-engine light.

An investigation of nationwide garages by automotive diagnostic specialist Carly has found that drivers are being overcharged up to five times to genuine cost for simple repairs.

From the September 1984 issue of Car and Driver. What we have here is one hell of a nice vehicle for grown-ups. The Peugeot ...

From roof racks to tires, maintenance and driving habits, you can likely save hundreds of dollars per year at the pump.

This re-creation of a spectacular 1934 one-off built for Edsel Ford has carbon-fiber bodywork and a Coyote V-8.

From the November 1984 issue of Car and Driver. If ever a car was an immediate sales success, the Porsche 944 was. Overnight, the transformation of the 924 into the 944 changed the sales picture of ...

That 16-pin connector tucked beneath the dashboard of every car built after 1996 is one of the most underused tools available to everyday drivers. Most people encounter the OBD-II port only when a ...