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

Alfa Romeo 4C spied in Michigan

During the Detroit auto show in January, Fiat and Chrysler CEO Sergio Marchionne told us -- in his own irreverent way -- that arrival of the long-promised Alfa Romeo 4C would be delayed once again. But as these spy photos show, testing on the sporty coupe continues even as a debut date remains elusive. This isn't the first time we've caught the 4C testing in the States.

Toyota and Lexus cars may have problems with stalling engines

More than a quarter-million Toyota cars sold worldwide--including many Lexus cars--have engines that may suddenly stall while the car is moving, Toyota said on Thursday. So far, Toyota has not recalled the vehicles, which total about 270,000 units. And its announcement in Japan did not say how Toyota discovered the problem.

Mercedes GLA – the A-Class SUV – will arrive in production guise at Frankfurt

The production version of the Mercedes GLA Concept (pictured) will debut at Frankfurt 2013 It’s only three months since the new Mercedes GLA debuted at the Shanghai Motor Show as a concept, but it’s already close to arriving in production guise. In fact, it looks like the new GLA – based on the new Mercedes A-Class underpinnings – will arrive in production form at next month’s Frankfurt Motor Show, ahead of going on sale in early 2014. The new GLA is aimed squarely at the competition from the BMW X1 and Audi Q3, and if it delivers as well as the A-Class has it stands a very good chance of becoming the pick of the premium compact SUVs.