E15 gas can cost less at the pump, but its ethanol content may affect fuel economy in ways drivers should understand before ...

The Honda Accord is one of the most popular sedans on the market, but if fuel efficiency is your primary motivator, other ...

Ethanol is a worse store of energy than fossil-based fuel, holding about one third less energy than pure gasoline, so your ...

The EPA uses static metrics in in laboratory environments for its fuel economy testing, and real-world driving conditions ...

Automakers produce vehicles with standard driver-assistance and safety features that can sometimes feel unnecessary. The auto start-stop feature does benefit a specific type of driver in certain ...

A decade or two ago, crossing the 30-mile-per-gallon threshold was a badge of honor reserved for subcompacts that drove like ...

The Toyota Prius remains the fuel economy king, delivering up to 57 mpg combined while offering sharper styling and better performance than previous genera ...

From track tests to real-world drives, we list the SUVs with the most gas mileage of 2026. See which models deliver the most ...

The Trump administration's proposal to roll back fuel economy rules is projected to cost drivers more in fuel than they save on vehicle prices. Relaxing these standards may cause U.S. automakers to ...

There are a number of cheap fuel-economy improvement devices out there, but it turns out only the expensive stuff really ...