The R8 is loosely based off of the Lamborghini Gallardo platform. It is powered by a 420-hp 4.2-liter V-8 engine borrowed from the RS4, and a full-time all-wheel drive system puts that power to the ground. It is available with either a 6-speed manual transmission or an R-tronic automated sequential manual transmission that allows for manual or automatic gear selection. Standard features include things like satellite radio, Alcantara/leather sport seats, 19-inch alloy wheels, and bi-xenon headlights. Options include a rearview camera, hill hold assist, navigation system and a Bang & Olufsen audio system. For 2009, the R8 is now standard with a 6-disc changer, Bluetooth, and HomeLink garage door opener.