8900123 Bolt Axn22 Locking Axle Nut 22mm 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.

BMW-Mercedes alliance: the latest news

By Georg Kacher Motor Industry 06 October 2008 17:13 BMW and Mercedes are continuing to work on joint projects, CAR can reveal. The two premium brands reckon working together might just stave off the threat of the credit crunch, collapsing car sales in key markets and the uncertainty wobbling the very foundations of the motor industry. But the BMW-Merc collaboration is proving difficult, according to executives in Germany contacted by CAR.

Chrysler eight-speed gearbox to boost big sedans' fuel economy

Chrysler Group says its new eight-speed automatic transmission will be the first offered on domestically produced automobiles and will boost fuel economy and cut emissions of the company's two full-sized, rear-drive sedans. The transmission initially will be available on 2012 Chrysler 300s and Dodge Chargers powered by Chrysler's 292-hp Pentastar V6 engine, the automaker said Thursday in a statement. The cars are being assembled and will start arriving in dealerships by Oct.