English
Lietuvių
Latviešu
Eesti
Polski
Русский
Українська
Deutsch
Nederlands
Čeština
Slovenčina
Svenska
Norsk
Dansk
Suomi
Audi S4: generations, engines and what to know before buying
The Audi S4 is the sporty version of the Audi A4, featuring a powerful engine and quattro four-wheel drive, produced since 1991. We look at how the B5, B6, B7, B8 and B9 generations differ, which engines are fitted, and what to check when buying a used S4.
The S4 in brief
The S4 is the sporty version of the A4, combining everyday practicality with high performance. It gets a more powerful engine, quattro four-wheel drive, a firmer suspension and distinctive S details. It was offered as a saloon and estate (Avant).
Over more than three decades, the S4 has seen a variety of engine types – from turbocharged five-cylinder to V6 biturbo, naturally aspirated V8, supercharged V6 and later turbo V6.
Which one to choose
The B5 (1997–2001) has a 2.7-litre V6 with twin turbos. This is already a classic car that needs proper maintenance.
The B6 and B7 (2003–2008) came with a 4.2-litre naturally aspirated V8, around 340hp, and a true sporty character. This is a specific choice for those who love the sound of a V8.
The B8 (2009–2016) has a 3.0 TFSI V6 with a supercharger, around 333hp, and an S tronic or manual gearbox. The B9 (2016–2024) – with a 3.0 turbo V6, around 354hp, and an eight-speed automatic; the updated version in Europe is also offered as an S4 TDI.
Engines and gearboxes
Different generations have different engines: B5 – 2.7 V6 biturbo, B6/B7 – 4.2 V8, B8 – 3.0 TFSI with supercharger, B9 – 3.0 turbo V6 petrol or (in Europe) V6 diesel.
Transmissions include manual, S tronic (B8), or 8-speed automatic (B9). All S4 models come with quattro all-wheel drive.
What to check when buying a used S4
Request the full service history. For older generations, pay attention to the condition of the distribution mechanism and turbochargers, as well as the clutch. For B8 models, check the cooling system and transmission.
Test the engine both cold and warm: it should run smoothly, without unusual noises, leaks, or smoke. Check for any tuning that might increase the load on the mechanics.
Inspect the brakes, tyres, and suspension – these wear out faster on an S4 than on an A4. Check the body for corrosion and repainted elements.
Generations and body styles
Equipment varies by market and year; we list the most commonly found versions.
S4 B5
1997–2001The classic S4 with a V6 biturbo engine.
- 2.7-litre V6 biturbo
- Quattro all-wheel drive
- Sedan and Avant
S4 B6 / B7
2003–2008The V8 era.
- 4.2-litre V8 naturally aspirated
- Quattro all-wheel drive
- Sedan, Avant and Cabriolet
S4 B8
2009–2016A more modern generation with a supercharger.
- 3.0 l V6 TFSI with supercharger
- Often — S tronic gearbox
- Sedan and Avant
S4 B9
2016–2024The latest generation.
- 3.0 l turbo V6
- 8-speed automatic gearbox
- Sedan and Avant
Generation comparison
| B6 / B7 | B8 | B9 | |
|---|---|---|---|
| Who it suits | For V8 sound enthusiasts | Balanced options | Latest technology |
| Commonly found in (dealerships) | 17–18 col. | 18–19 col. | 18–19 col. |
| Engine | 4.2 V8, ~340 HP | 3.0 V6 supercharged, ~333 HP | 3.0 V6 turbo, ~354 HP |
| Price in the used market (relatively) | € | €€ | €€€ |
The B8 is a solid choice, but the latest is the B9. The B6/B7 is worth considering if well-maintained, especially for the V8.
Pros
- Plenty of power and acceleration
- Quattro all-wheel drive
- Practical sedan or Avant body styles
- High-quality interior
Cons
- More expensive to maintain than a typical A4
- High fuel consumption
- Older generations require more attention
Frequently asked questions
Which S4 generation is best in the used market?
Many opt for the B8 due to its balance of price and technology. The B9 is the newest, but it's pricier.
How does the S4 differ from the A4?
The S4 boasts a more powerful engine, quattro all-wheel drive, a firmer suspension, sporty brakes, and a distinctive look.
Is the S4 expensive to maintain?
Yes, more so than a standard A4, as the higher performance demands better-quality maintenance, and tyres and brakes wear out faster.
Updated 2026-10-17 · Trim levels and equipment vary by market and model year — check the equipment of the specific car. · Translated automatically
