Side airbags are standard instead of optional on 2007 versions of Ford's large sedan. Five Hundred shares its design with the Mercury Montego and Ford's Freestyle SUV. All use a platform originated by Ford-owned Volvo. Five Hundred comes with front-wheel drive or all-wheel drive and offers SEL and Limited models; SE models are dropped for 2007. The only engine is a 203-hp 3.0-liter V6. Front-drive models have a 6-speed automatic transmission. AWD models get a continuously variable automatic transmission (CVT). ABS is standard. Traction control is included with AWD, optional otherwise; no antiskid system is offered. Front side airbags and curtain side airbags with rollover deployment are now standard; they had been optional. All models include power driver seat and split folding rear seatbacks. Leather upholstery is standard on Limited, optional for SEL. DVD entertainment and a navigation system are available for both, and are joined for '07 by optional satellite radio. Sunroof and rear obstacle detection are also available.