Gates Tck279 Accessory Drive Belt(s) on 2040-parts.com

Audi working with Mazda on Wankel for A1 e-Tron?

The Audi A1 e-Tron could be getting a Mazda Wankel Last year at the Geneva Motor Show, Audi showed us another in its seemingly endless line of fantasy e-Tron cars. But instead of being a pointless supercar with a pile of batteries bolted underneath to wreck the handling with all their weight – for the three feet you can actually drive with your foot to the floor before you run out of juice – this e-Tron was a different beast altogether. Not only was the Geneva 2010 e-Tron a properly sensible city car – the Audi A1 - but it came with a range extender so you could actually use this Audi A1 e-Tron beyond the confines of its electric charge.

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.

Spy photos of the 2014 Porsche Macan

What we have here is the new Porsche Macan. Our crafty spy shooters caught the vehicle testing in minimal camouflage. The new small SUV will go on sale late next year.