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.

Frankfurt 2011: VW Nils EV Go-Kart Video

VW Nils revealed at Frankfurt There have been quite a few of these very small, go-kart-style urban commuter cars cropping up of late, but perhaps the Volkswagen Nils is the most promising. The most promising because if – and it’s a very big if – commuters take to the idea of a grown-up version of a soap-box Kart with an engine for getting to work, the VW Nils will possibly offer the best combination of practicality, refinement and cost. Yes, there’s the Audi Urban Concept to consider, but that will be more expensive (there’s a reason Audi makes VW 40% of its profits), so if commuters do actually find appeal in this route then the Nils is probably the front-runner.

Opel reveals Cascada convertible

Opel, General Motors' financially embattled European unit, has revealed its new midsize Cascada convertible in a series of photos. The car goes on sale in early 2013. The two-door soft top, which is widely expected to be sold in North American by the Buick brand, enters the Opel lineup as a replacement for the Astra TwinTop.