By KBB.com Editors
Audi's S4 takes all that is good about the A4 Sedan (comfortable interior, reasonable dimensions, razor-sharp handling) and ratchets it up a few notches by adding a potent V8 engine, standard quattro all-wheel drive and a race-inspired suspension. Designed to compete with the BMW M and Mercedes-Benz AMG Series, Audi expands the sports car definition by offering the S4 in sedan, wagon (known as the S4 Avant) and convertible forms. Comfortable enough to use as a daily driver, yet equally at home on a closed race track, the S4 delivers unrelenting doses of speed and agility, allowing even the novice driver to feel like a seasoned pro. The S4's $50,000 price tag and limited production numbers ensure the lucky owner a small measure of exclusivity.You'll Like This Car If...
If you're a high-performance enthusiast who doesn't like to compromise, you'll love the Audi S4. It's a remarkable combination of abundant power, incredible performance, phenomenal handling and a stunning interior providing first-rate comfort and luxury.You May Not Like This Car If...
You won't like this car if you have to stick to a budget. It's not inexpensive to purchase, or to insure, or to keep the gas tank full. It's terrific, but it's not for everybody.What's Significant About This Car?
The S4 receives sporty new front and rear bumpers with optional carbon fiber trim. The S4's Symphony stereo loses its cassette deck but gains a six-disc CD changer capable of playing MP3-encoded CDs, and a power moonroof is now standard.Driving It Driving Impressions
The S4's levels of acceleration, handling and braking are simply far beyond most drivers' previous automotive experiences. Even those with considerable time in very high-performance cars will likely be seriously impressed. Audi offers a choice of two transmissions: A six-speed manual or the optional SporTronic automatic, the later operated with steering wheel-mounted shift paddles. The quattro system is a perfect match for the engine, and does an exemplary job of delivering the V8's remarkable output to all four wheels for the optimum in traction, handling and stability. Although there is nothing subtle about the S4's ride quality, for those who want a car like this it's a small trade-off when compared to the S4's awesome performance level.Favorite Features
Recaro Sport Seats
The S4's Recaro sport seats are outstanding. They hold you in all the right places without pinching. Add the optional Alcantara upholstery and the interior becomes even more stunning.
Audi Navigation System
The available Audi navigation system displays route direction on a small screen tucked neatly between the speedometer and tach. This makes it quite easy to read the directions, as they are in your line of sight, rather than off to the side.
Audi has a reputation for terrific interiors and the S4's might just make you want to climb in and never leave. Open the door and you're immediately aware of wonderful sights, surfaces and even sounds. The 12-way adjustable power Recaro sport seats are covered in rich Nappa leather, with the option of Alcantara color-keyed inserts. There is subtle gray birch wood trim and S4 logos on the instruments and thick gearshift knob. Pedals are perfectly positioned for those who can accomplish the classic heel-and-toe downshift, and the thick-grip adjustable wheel instills a feeling of utter confidence when negotiating tight turns. Music lovers can add a 215-watt Bose audio system with AudioPilot noise compensation feature.Exterior
Visually, the S4 can be thought of as a variant of the A4, with aggressive front and rear bumpers that include slotted lower air vents, a revised grille and fog lights. Other S4 styling cues include aluminum exterior side mirrors, S4 badges at the base of the trunk lid and body-colored lower door lips. Though it is clearly a four-door sedan, the slick shape and blacked-out B-pillars make it easy to mistake it for a high-performance coupe. For 2007, all S4s wear a new set of 18-inch wheels identical in design to the new S8's 20-inch wheels. A tastefully small rear wing and lower air dam complete the S4's appearance.Notable Standard Equipment
The S4 is packed with such goodies as a six-speed manual transmission, quattro all-wheel drive, power moonroof, front-side airbags, full-length side-curtain airbags, 12-way power Recaro seats with power lumbar support, 18-inch wheels, MP3-compatible six-disc CD changer, bi-xenon headlamps with washers, dual heated outside mirrors, tilt/telescopic steering wheel, Driver Information Center and dual-zone automatic climate control.Notable Optional Equipment
The S4's options sheet is extensive. Popular items include rear side airbags, a power rear sunshade, Audi's navigation system, Bose audio with XM Satellite Radio, heated seats and ski sack. The Premium package adds a garage door opener, dual power folding mirrors with day/night feature, heated front seats, adaptive headlamps and rain sensing wipers.Under the Hood
The S4's 4.2-liter V8 is a masterful piece of engineering. It has all the power of a muscle-car era V8 without a rude idle and course acoustics. Under normal driving conditions the S4's engine sounds correctly politethe only evidence of its eight-cylinder symphony is evident at the exhaust pipe. Push the accelerator to (or near) the floor and it's a whole different story. A throaty growl announces the arrival of serious horsepower and the car gains speed at a decidedly rapid rate. Choose the manual transmission and you may have your skills put to the test, as all that power means that gear changes can arrive very quickly.
340 horsepower @ 7000 rpm
302 lb.-ft. of torque @ 3500 rpm
EPA city/highway fuel economy: 15/21 (manual), 15/23 (automatic)
The S4 Sedan has a Manufacturer's Suggested Retail Price (MSRP) of $49,920, while the Avant Wagon starts at $50,920. The automatic transmission adds $800. A look at the Fair Purchase Price shows that the S4 is selling at or slightly above MSRP. Be sure to check the Fair Purchase Price to see what consumers are currently paying for S4s in your area. Like all Audi products, the S4 holds a strong resale value, slightly higher than the Cadillac CTS-V, but just a few percentage points below the BMW M3.