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

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.

In pictures: the new £5m Haynes International Motor Museum

Anyone who has headed to the West Country on the A303 over the past two and a half years can’t have failed to notice the building work going on at the Haynes International Motor Museum. The museum - which first opened its doors in 1985 - has been the subject of a £5 million modernisation project. But finally - some ten years after the original plans were drawn up - the new and much improved Haynes International Museum is now open to the public.

CDN–GM Interactive Design Competition winners announced at NAIAS

The winners of the CDN–GM Interactive Design Competition have been announced at the North American International Auto Show (NAIAS) in Detroit. Following a guided tour of the auto show with the GM design team, the finalists gathered on the GMC stand in Cobo Hall where Mark Adams and Ken Parkinson – heads of design for Cadillac & Buick, and Chevrolet & GMC respectively – were joined by Car Design News' Editor Owen Ready to present the winners of each brand's competition brief. Joining them on stage were the mentors from GM's design teams who interacted with the entrants throughout the competition to critique and help develop their work, making this a truly unique contest.