Ford will pay owners of the hybrid car after being sued for misleading customers.

Facing ambitious new federal mileage standards, and higher gas prices, automakers are touting ‘fuel efficiency’ at the North American International Auto Show this week.

The National Highway Traffic Safety Administration is looking to pass a new rule that would require silent electric and hybrid cars to make more noise.

Several new electric and hybrid cars were introduced at the Los Angeles Auto Show, but high prices are expected to keep alternative-fuel vehicles a small part of the market. Ford's shot at efficiency: a three-cylinder Fiesta.

The new Karma luxury hybrid is smarting from a series of bruising reviews over at Consumer Reports.

It'll cost upwards of $850,000. So what's the payback period going to be?

Turns out, many Americans who purchase a hybrid car end up going back to a non-hybrid the next time they hit the car lot.

Only a little more than a third of hybrid vehicle owners decided to buy another hybrid in 2011, according to a new study.

Hybrid cars win, coal loses as the world's largest energy company looks to 2040.