When the sun is out and the temperature is climbing, does that heat have an effect on how efficiently your car runs? Here's how your MPG might be affected.

Fuel economy also takes a massive hit during the winter, leading car owners to question whether a diesel or gasoline engine is better suited for the winter.

Discover why idling your car in winter is outdated and harmful. ... Cars that idled for five minutes had 7 percent to 14 percent worse fuel economy than their non-idling counterparts, ...

Nissan Rogue leads the pack as the most fuel-efficient non-hybrid SUV, boasting an impressive 33 mpg combined and a standout ...

According to the U.S. Department of Energy, the fuel economy of a gasoline car is roughly 15% lower at 20 degrees than it would be at 77 degrees. It can drop as much as 24% for short trips of ...

Official WLTP test figures for fuel economy, CO2 emissions and electric range can make a big impact on your car buying decision. Here’s what you need to know ...

Picture this: It's the dead of winter in Chicago, with a cold weather advisory in place, wind chills as low as -30 -- and your car won't start. Hopefully this isn't a familiar scene. But according ...