Acura redesigned its flagship sedan for 2005. The '05 RL was four inches shorter in wheelbase and overall length than its 1996-2004 predecessor, but gained standard all-wheel drive, more power, fresh styling, and additional safety and convenience features. It came in one trim level with no options. The sole engine was a 3.5-liter V6 with 300 hp. The only transmission was a 5-speed automatic with steering wheel-mounted paddle shifters for manual operation. Acura called the RL's AWD system Super Handling All-Wheel Drive (SH-AWD). It was designed to transfer power to the outside rear wheel in turns to help rotate the car around a corner. Front side airbags and curtain side airbags were standard. So were antilock 4-wheel disc brakes, antiskid control, steering-linked xenon headlights, navigation system, and keyless access and ignition. Also included was the AcuraLink system, which displayed maintenance reminders, operating tips, diagnostic information, and vehicle recalls on a dashboard screen. It also alerted the driver to traffic conditions and accidents in major urban areas.