3889124 Volvo Penta Marine Serpentine Belt on 2040-parts.com

Cadillac XTS 'choreographed' LED lighting explained [w/video]

The introduction of LED lighting into vehicle lamp graphics has seen manufacturers strive to create their own identifiable lighting signatures. Cadillac, for example, is looking to take this one step further with the introduction of LEDs throughout the XTS, rather than just within its light clusters. Designed to greet drivers through a choreographed sequence, 20 separate light sources begin their routine once the key fob is pressed.

New BMW 4-Series shows its sporty side with M Performance add-ons

The BMW 4 Series M Performance Parts have been revealed (pictured) The new BMW 4-Series Coupe may not have arrived in BMW showrooms yet, but that hasn’t stopped BMW showcasing how you can spend extra money on your new 4-Series with a range of M Performance accessories. So when you do go and spec up your new 4-Series you’ll also be able to tick some of the boxes on the M Performance Accessories list for your dealer to fit when your car arrives for delivery and (almost) turn it in to an imitation M4 Coupe if you wish. Probably the biggest seller will be the showy stuff, like the M-Performance body kit which adds a lower front bumper with carbon fibre splitter and bigger air intakes, bigger sills, new back bumper with diffuser and ducts, carbon fibre spoiler at the back, dark chrome trim and carbon fibre door mirror caps.

Video: Autoweek thrashes the 2011 Porsche GT2 RS

Join Autoweek senior editor for motorsports Mac Morrison and road test editor Jonathan Wong as they put the 2011 Porsche GT2 RS through the paces at GingerMan Raceway in southwest Michigan. They take a closer look at what makes the car so special, and they get behind the wheel to find out for themselves. We'll bring you the GT2 RS VBox lap later this week, and stay tuned for Lexus LFA track action coming soon.