Cummins 6b 5.9 Qsb Alternator Pulley 3965147 on 2040-parts.com

New Mercedes SL 400 replaces SL 350

The new Mercedes SL 400 (pictured) replaces the old SL 350 It’s a little over two years since the latest Mercedes SL arrived, and Mercedes has now decided to add a little zest to sales by dropping the old SL 350 and replacing it with a new Mercedes SL 400. The new SL 400 gets its power from the new E400 which means a twin-turbo 3.0 litre V6 with 328bhp and 354 lb/ft of torque – 26bhp and 81 lb/ft more than the old SL 350 – enough to let the SL 400 scoot to 62 mph in 5.2 seconds – 0.7s better than the 350 -= and on to a limited top speed of 155 mph. The new SL 400 has to make do with Mercedes tried and tested 7-speed auto – despite a new 9-speed now being available in Mercedes’ arsenal – which gives the SL 400 official economy of 38.6 mpg and emissions of 172g/km – not that you’ll come close in the real world.

Aston Martin allows fans to pick livery on GT3

Aston Martin announced a contest for North American fans last week that would have the winner design the racing livery for the Aston Martin Vantage GT3 that will compete in the Rolex Grand-Am series. TRG-AMR has two concepts approved already; fans will design the third. Contestants can log on to TRG's Facebook page page and submit a design.

Suzuki adds 50 Cent to Super Bowl ad

Earlier this week, Suzuki revealed its Super Bowl ad, and on Thursday it released a final version that now includes music by rapper Curtis “50 Cent” Jackson. Check out the new version here--it saves you from waiting until Sunday's game to see it. If you can't get enough of Super Bowl car ads, check out our video slideshow of all the automotive Super Bowl commercials released so far at shopautoweek.com.