TThe 2009 Acura TL is redesigned and slightly enlarged in most key dimensions. This premium midsize sedan is available in base and SH-AWD (for Super Handling All-Wheel Drive) models. The latter replaces the Type-S as the high-performance member of the Acura TL family. Base versions receive a 3.5-liter V6 engine that makes 280 hp while SH-AWDs get a 3.7-liter V6 that, at 305 hp, is the most powerful engine yet offered in an Acura. A 5-speed automatic with "Sequential SportShift" steering-wheel-mounted paddle shifters is the sole transmission for both models. The SH-AWD includes larger-diameter front and rear stabilizer bars, plus a standard 18-inch-wheel package in place of the 17-inch ones used on the base car. Available safety features include ABS, traction control, antiskid system, front side airbags, and curtain side airbags. Also standard are leather upholstery with heated front seats, sunroof, wireless cell phone link, and 8-speaker audio. A Technology Package, priced as a separate model, includes 10-speaker audio and a navigation system with real-time traffic and weather alerts.