Specs and features for Forza off Xbox.com:Make every car yours: Collect models from more than 60 top car manufacturers, including Mazda, Nissan, Mercedes-Benz, Honda, Chevrolet, Ferrari, Porsche, BMW, and Dodge. Trick out sport compacts with real-world body kits, rims, spoilers, decals, side skirts, fender flares, and hood scoops. Add motorsport decals and team paint-schemes to supercars, GT racers, and exotics. Transform production cars into racetrack monsters.
Tune it up: Take your car to the garage and install alternative engines, suspension kits, bolt-on superchargers, brakes, rims, racing slicks, and more. Fine-tune gear ratios, fuel-mapping, forced-induction pressure, tire temperature and pressure, and ignition timing for the ultimate setup.
Experience the most technically advanced driving simulation on Xbox: Top automotive engineers teamed with experienced programmers to create an advanced physics engine for Forza Motorsport, designed to simulates authentic car performance. Cars incur damage and wear, which affects car performance. Advanced tire and suspension models respond to heat and pressure changes as well as weight transfer and aerodynamic load.
Drive in gorgeous track environments: From the famously challenging Nurburgring Nordschleife to the spectator-lined streets of Rio de Janeiro, race on meticulously designed tracks with an incredible sense of speed and realism.
Check out the revolutionary A.I. Drivatar™ technology: Train your own A.I. “Drivatars” to use the same racing techniques you do, so they can race for you in competitions or train new drivers on your team. Drivatar technology is the foundation of the human-like A.I. in Forza Motorsport.
Take online racing to the next level: From intense multiplayer wheel-to-wheel racing to challenging individual bests and beyond, Forza Motorsport’s Xbox Live gameplay will deliver innovations that reinvent the online racing experience.
Enjoy a graphical showcase on the most powerful console: Well-balanced reflections, lighting, and shadows tie together highly detailed cars and smooth-edged environments. Camera effects like blooming, lens flare, heat shimmer, light rays, depth of field, and haze create TV-quality presentation. Unique road textures, surface irregularities, persistent oil and skid marks, and scraped walls deliver an incredible sense of speed.
If MS can deliver all this GT finally has a challenger for its crown. 
