Whether as a sedan, Avant wagon, or Cabriolet convertible-the 2007 Audi A4 is available with a choice of two direct-injection engines: a 2.0L turbocharged four-cylinder (designated 2.0T FSI) making 200 horsepower, and a 3.2L V6 (designated 3.2 FSI) making 255 horsepower.

The A4 sedan can be had with either front- or all-wheel drive; front-wheel drive versions come with either a six-speed manual or continuously variable transmission (CVT), while "Quattro" all-wheel-drive versions come with either the manual or a six-speed Tiptronic automatic.

Sedans and wagons have a 60/40-split folding back seat, and wagons also have a tailgate light that illuminates the area directly behind the car, plus a storage compartment hidden below the cargo floor and an extra 12-volt outlet. Both the sedan and wagon have storage spaces under the front seats.

The Cabriolet is available with the same range of engines and includes more attention to safety than most convertibles, with special side-sill reinforcements, stronger, impact-absorbing doors, specially designed side-impact air bags, and two pop-up rollover bars at the back of the cabin. The folding soft top also has more thermal and sound insulation for year-round driving, especially when equipped with quattro. The Cabriolet also has a different gauge appearance and leather upholstered sport seats, along with available walnut or birch wood trim.

The sporty S4 model adds a 340-horsepower, 4.2L V8 engine and a choice of a six-speed manual or six-speed automatic transmission. Manual-transmission versions get a performance-oriented version of the quattro all-wheel-drive system that reverts to a torque split of 60 percent to the rear wheels during normal driving. As with all versions of quattro, torque is still sent to the wheels with the most traction as needed.

S4 models also get numerous visual cues, including quad exhaust pipes and various interior and exterior trim changes. S4 sedans get an integrated trunklid spoiler, while S4 Avants get distinctive aluminum roof rails.

The S4 sedan also has an available sport package that adds a more aggressive look, with front and rear carbon-fiber lip spoilers along with rear-bumper side scoops.

All A4 and S4 models come with standard ESP stability control with anti-lock brakes and brake assist, and the Sideguard head air bag system, which offers full head protection even when the car rolls over after a primary collision. In the front seats, there are RearGuard head restraints aimed at preventing whiplash injuries.

The A4 interior stands out with its Brown Walnut and vavona wood inlays on V6 models and aluminum inlays on four-cylinder models. Standout options include a DVD navigation system, with a large 6.5-inch screen and SD-card sound-system input, and a dynamic cornering system which helps illuminates into corners with swiveling bi-xenon beams. The optional Audi Parking System (APS) provides an audible signal while backing toward a vehicle or object. Hide