The 2009 Audi A4 is a luxury sedan that is part of the model's fourth generation. It offers two potent engine options: the base 2.0L turbocharged, inline-4 that produces 211 horsepower, and a more powerful 3.2L V6 generating 265 horsepower. Both engines come paired with a standard six-speed manual transmission, with an optional CVT for the base model and 6-speed automatic for the V6. Audi's Quattro AWD system is available across all trims. Three trims are available: Premium, Premium Plus, and Prestige. Each comes with a host of luxury and convenience features, with Prestige offering the most indulgent options. The A4's infotainment system features a 6.5" display, satellite radio, and an iPod interface. For 2009, the A4 sedan was completely redesigned, with noticeable style upgrades, increased dimensions for more interior space, and the introduction of Audi Drive Select, an adjustable driving settings system.