Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

Dealer Demons: Dodge customizes Vipers for select stores and enthusiasts

We’ve seen many special-edition Dodge Vipers for the car's final year--the ACR-X, the Vooodoo Viper, the 1:33. It's almost as if every Viper is a special edition. With that in mind, Chrysler is now letting dealerships get into the act.

What's different about electric cars this time? A column by Kevin A. Wilson

Thirteen years after the General Motors EV1 was rolled out to cheers from advocates of a revolution in the way we power automobiles, those same advocates are out front cheerleading yet another revival of an idea as old as the automobile itself: Run 'em on batteries. Batteries aren't a source of energy. They're just storage units, a convenient means of making power portable.

Petrol cars twice as likely to fail MOT on emissions

The latest MOT test data shows that 26.2% of all cars tested fail on excess exhaust emissions – and surprisingly petrol cars fail more than twice as often as diesels in this part of the annual roadworthiness test. According to the official Vehicle Operator and Standard Agency (VOSA) figures, which cover all of 2010 and the first nine months of 2011, 9.7% of petrol cars failed to meet MOT emissions standards compared to just 3.9% of diesels. On Bing: see pictures of the MOT test Find out how much a used car with 12 months MOT costs on Auto Trader The analysis has been carried out by fuel additive “provider” Redex, which naturally has an interest in the findings, since its products are designed to breakdown engine deposits and improve efficiency.