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

MG6 Diesel launches – price from £16,995

The much needed diesel version of the MG6 has launched, offering a diesel engine in the new MG for the first time. Priced from £16,995. The now Chinese-owned MG hasn’t had overwhelming success with its MG6 so far, but much of that can be put down to the lack of a diesel-engined offering in a marketplace that has become diesel obsessed.

Pontiac Vibe

One week after Toyota introduced its new Matrix at the SEMA show in Las Vegas, Pontiac presented the new redesigned Vibe at the LA Auto Show, a five-door hatchback short wagon that - like the Matrix - is derived from a lengthened and widened Corolla platform. Clear brand differentiation between the two cars is done through the styling of the Vibe's excusive sheet metal and different interior finishes and trim. To better relate the Vibe to the Pontiac Solstice or G8, designers wanted to express more muscle and leave behind last generation's "mini-SUV" look.

Mercedes-Benz C63 AMG coupe revealed

Mercedes-Benz has followed up the debut of the C-class coupe at the Geneva motor show with the unveiling of this new range-topping version, the C63 AMG coupe. Set to land in North American showrooms in September following a planned debut at next month's New York auto show, the new BMW M3-challenger receives the same updated mechanical package as the recently facelifted C63 AMG sedan. It will be sold from the outset as a 2012-model-year car.