In a huge boost for the Obama administration and clean-energy firms, electric vehicle maker Tesla Motors Inc. announced Wednesday that it is paying back its $465 million government loan in full -- and nine years early.

The Department of Energy ...

DETROIT -- Because Ford needs to keep up with Americans' appetite for new cars and trucks, the company will add 200,000 vehicles of annual capacity, and get another 40,000 vehicles by cutting the traditional two-week summer shutdown in half.

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Cool cars. Cool trips. Cool $150 shades. Summer is a great time to be rolling in cash -- or at least stacked in airline miles.

So as many consumers are planning vacations for July or August, they may be tempted to say, "Hey, why not grab 30,000 ...

QUESTION: I have a 2003 Mercury Mountaineer. After returning from vacation, I found a voicemail message from a neighbor who said that the car horn was blowing intermittently, which was especially irritating at night. I was skeptical until the horn...

Fiat, the century-old Italian automaker, appears poised to move its headquarters to the U.S. after its planned merger with Chrysler Group.

The move would be unprecedented in the automotive industry, experts said, because of Fiat's deep roots.

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QUESTION: I have a 2001 Subaru Forester S, purchased new, which now has slightly less than 60,000 miles on the meter. This has been a great car; I have had little to no real trouble with it. Lately, however, the "check engine" lamp turned on and, ...