Audi S4 B6
The ultimate sleeper: a compact executive saloon hiding a sonorous 4.2-litre V8.
- Power
- 344 bhp
- 0–60 mph
- 5.4 s
- Top speed
- 155 mph
- Est. value
- $6k–$25k
About the Audi S4 B6
The B6-generation Audi S4 was a bold departure for the brand, replacing the twin-turbo V6 of its predecessor with a massive 4.2-litre V8 shoehorned into the A4's compact engine bay. This 'BBK' engine featured a chain-driven timing system at the rear to save space, producing a distinctive, high-revving soundtrack. While it lacked the flared arches of the later RS4, its understated 'sleeper' looks, Recaro interior, and Torsen-based quattro system made it a formidable all-weather grand tourer. Collectors prize the manual saloon for its mechanical purity, though potential owners must be wary of the complex timing chain service requirements.
Audi S4 B6 specs
The Audi S4 B6 produces 344 bhp (257 kW) and 410 Nm (302 lb-ft) of torque. It reaches 60 mph in 5.4 seconds and has a top speed of 155 mph (250 km/h).
| Make | Audi |
|---|---|
| Model | S4 |
| Generation | B6 |
| Trim | 4.2 V8 |
| Years | 2003–2004 |
| Type | Sports car |
| Body style | Saloon |
| Country | Germany |
| Production | About 20,000 built |
| Original price | About $46,000 when new |
| Engine | 4.2-litre naturally aspirated V8 |
|---|---|
| Displacement | 4,163 cc (4.2 litres) |
| Induction | Naturally aspirated |
| Power | 344 bhp (257 kW) at 7,000 rpm |
| Torque | 410 Nm (302 lb-ft) |
| Redline | 7,200 rpm |
| 0–60 mph | 5.4 s |
| Top speed | 155 mph (250 km/h) |
| Transmission | 6-speed manual |
| Drivetrain | All-wheel drive |
| Weight | 1,660 kg (3,660 lb) |
| Power-to-weight | 207 bhp per tonne |
Typical figures for the standard car; options, markets and model years vary. Where our specs come from
How much is an Audi S4 B6 worth?
A typical Audi S4 B6 is estimated to be worth $6,000 – $25,000 (about £4,500 – £19,000).
Its original price when new was about $46,000.
Values are directional estimates for a typical example, not appraisals. Condition, mileage, history and specification all change what a real car is worth. Pound figures use the exchange rate of 3 November 2026. How values are estimated
Audi S4 B6 rarity in CarSpot
The Audi S4 B6 is an Uncommon card in CarSpot, with a rarity score of 17 out of 100. Hot hatches and premium sporty cars. An Uncommon card is worth 20 XP.
Each model's tier starts from a 0–100 score based on its value plus its power or production numbers. Once enough players have spotted a model, how often it is spotted can move it up or down one tier. How CarSpot rarity works
Rarity is a collectible game mechanic, not an assessment of real-world scarcity or value.
Audi S4 B6 fun facts
- To fit the V8 into the A4's engine bay, Audi moved the timing chains to the back of the engine, reducing its overall length.
- The B6 S4 was the first time a V8 engine was offered in a compact executive car, predating the V8-powered BMW M3 and Mercedes C63.
- Despite its performance, the S4 was visually distinguished only by its 18-inch Avus wheels, aluminium-look mirrors, and subtle door blades.