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

Rear-end collisions increasing, says study

REAR-END shunts on the road are getting more common despite the advance of new anti-crash technology, according to new research by accident management firm Accident Exchange. Rear-end shunts – when one car drives into the back of another – have risen by 7% in the last three years as a proportion of all accidents. Each accident causes damage costing an average of £2,000 to repair.

Mercedes-Benz B-Class aerodynamics tested [w/video]

Mercedes-Benz has produced a video testing the aerodynamics of its new B-Class – which it claims is the most aerodynamically efficient car in the world – using a wind tunnel and fluorescent paint. The W245-generation B-Class has the lowest aerodynamic drag in its segment with a Cd of just 0.26, thanks to features such as serrated front wheel arch spoilers, optimized cooling airflow and a Pagoda roof to help airflow over its profile. The car's aero properties were put to the test at the MIRA vehicle test facility in the UK using fluorescent paint in 60mph winds to highlight its flow dynamics, only visible under UV lights.

VW Golf GTI priced from £25,845 in UK

The new Mk7 VW Golf GTI is now on sale in the UK priced from £25,845. That's only a £195 rise over the old Mk6 Golf GTI, despite the extra power, performance, and a 2.2mpg improvement in economy. Hang on - nearly £26k for a VW Golf GTI is a bit steep, isn't it?  Actually, it's better value than the old Mk6 Golf GTI. For a start, the new Mk7 Golf GTI's 29E insurance group rating is five groups lower than the old model's, so you should save on premium renewals as well as road tax and fuel fill-ups.