Unlike the interior, with its array of standard and optional features, there is but one choice for what lies under the hood of the 2005 Ford Five Hundred. In charge of motivation is a 3.0-liter, dual overhead cam (DOHC), 24-valve V6. Horsepower for this small six-cylinder is rated a lowly 203 at 5,750 rpm, and 207 lb.-ft. of torque is available at 4,500 rpm. In front-wheel-drive attire, that motor is connected to a six-speed automatic transmission; when the all-wheel-drive system is bolted on, that traditional automatic is swapped out for a continuously variable transmission (CVT). CVTs allow for a nearly infinite number of gear ratios, ensuring that the engine is always delivering optimum power. In addition to and because of its seamless shifting, this type of transmission can usually provide better acceleration and increased fuel efficiency, though our all-wheel-drive Limited test car achieved only 18.9 mpg in mixed driving; the EPA ratings for this model are 19 mpg in the city, 24 mpg on the highway, and 21 mpg in mixed driving. Regardless of whether it's in the city or on the highway, controlling the ride is a fully independent suspension, with MacPherson struts up front and a multi-link setup in the rear. Self-leveling coil-over shocks are standard on all-wheel-drive models, and front and rear stabilizer bars are bolted onto every 2005 Ford Five Hundred. Liberal use of specially tuned and soft suspension bushings aim to isolate road imperfections and provide a comfortable ride and stable handling. Front vented and rear solid discs supply stopping power, backed up by the safety of four-wheel antilock brakes and an electronic brake force distribution system. Another feature designed to keep drivers safe and in control, the optional all-wheel-drive system has been borrowed from one of Ford's other divisions, Volvo. Using an electronic Haldex coupling unit mounted next to the rear differential, power is transferred to the rear wheels within milliseconds if the front wheels begin to slip, or to any of the four wheels that has the best grip. As with the all-wheel-drive system, many of the 2005 Ford Five Hundred's other safety features come from Volvo. In the event of a side impact, a SIPS (Side Impact Protection System) tube located under the front seats deforms upon a hard impact and moves crash energy away from the occupants. Overhead is a roof cross-member that works with the lower SIPS tube to dissipate energy away from the passengers. The fuel tank is located under the rear seat, surrounded by a steel safety structure and placed in front of the rear wheels, a move designed to avoid spillage or fire in the event of a rear impact. As a result of this focus on safety, the 2005 Ford Five Hundred has achieved the highest possible crash test ratings, five stars, for both front and side impacts.
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