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Exclusive -- Mercedes-Benz GT AMG spy shots

On Monday, we told you about the 911-fighting Mercedes-Benz GT AMG, which is scheduled to debut at the German Grand Prix in 2014. Today, we have fresh spy photos of the upcoming car. The two-seat coupe is codenamed C190 and will take the place of the bigger SLS AMG.

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.

2015 Audi RS7 facelift revealed

2015 Audi RS7 facelift (pictured) revealed It’s not much more than a year or so since the Audi RS7 was revealed at the Detroit Motor Show, but it’s already getting a bit of a facelift. The changes aren’t enormous, but with the A7 and S7 getting a tweak for 2015 there’s no way Audi could leave the RS7 to struggle on with the ‘old’ look. Changes pretty much mirror those on the A7/S7 with a single frame grill and slightly different front bumper changing the nose (although you’ll probably need them side by side to spot the changes) with standard LED headlights and the option of Audi’s new matrix headlights on offer with darker graphics to set them apart from those of the A7/S7.