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

World’s best-selling roadster returns

MAZDA has released details on the brand-new fourth generation MX-5, already the best selling roadster of all time. Launched simultaneously at events in Barcelona, Japan and the USA, the fourth-generation MX-5 is the first to benefit from Mazda’s SkyActiv efficient technology. That means a frugal but powerful petrol engine and a substantial weight saving of 100kg over the previous generation.

Andy Priaulx’s guide to 2012's BMW M3 DTM racer

The Deutsche Tourenwagen Masters is the world’s greatest tin-top race series, and after a twenty-year absence BMW is returning to the DTM in 2012 – it’s been tempted back by new rules and regulations that cut costs, improve safety, and make the racing closer and more exciting than ever. And Guernseyman Andy Priaulx is one of just six drivers who has a seat in the half dozen M3s that’ll battle Mercedes’ C Class Coupe DTM and Audi’s A5 DTM next year. We caught up with the three-time World Touring Car Champion to find out about his new 480bhp company car.

General Motors says Magna's Opel bid has obstacles, RHJ's is easier to accept

General Motors Co. says a bid for Opel from Magna International faces hurdles while a rival offer from Belgian investor RHJ International would be easier to accept. Writing on GM Europe's Web site, John Smith, GM's chief negotiator for the Opel sale, says Magna's bid "contained elements around intellectual property and our Russian operations that simply could not be implemented." He adds: "GM has partners in other parts of the world who have joint ownership of these assets ...