A law enforcement version of the Ford Crown Victoria, the 2009 Ford Police Interceptor is powered by a 4.6-liter V8 engine (250 hp) that utilizes E85 flex fuel to improve fuel mileage. Transmission options are limited to a 4-speed automatic transmission. Updated features for 2009 include power pedals as standard equipment, side impact airbags, and recessed window switches. The brakes on the Police Interceptor have also been updated to aid in pursuit driving. 17-inch wheels and a heavy-duty frame/suspension rounds out the adjustments made to the Crown Victoria to make it law enforcement ready. Safety is comprised of multiple airbags, brake/shift interlock, and tire pressure monitoring. The Police Interceptor is backed by a 3-year/36,000-mile warranty.