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Audi RS4: B5, B7, B8 and B9 generations, engines, and what to know before buying
Audi RS4 — the sporty A4 variant, produced since 1999, always with quattro all-wheel drive. We look at four generations, their engines, and what to check before buying a used RS4.
RS4 in brief
The RS4 is Audi Sport's sporty A4 version, combining dynamism and everyday practicality. Particularly famous is the RS4 Avant estate – it offers both a large boot and a sporty driving character.
All RS4 generations come with quattro all-wheel drive, a reinforced chassis, larger brakes, and distinctive RS interior trim. Before buying, consider not just the price, but also maintenance costs, as this is a sports car.
Which generation to choose
B5 (1999–2001) – the first RS4, only available as an Avant estate with a 2.7-litre twin-turbo V6. Due to its age and limited production, it's more of a collector's choice. The B7 (2005–2008) has a naturally aspirated 4.2-litre V8 and a 6-speed manual gearbox – it's prized for its sound and driving feel.
The B8 (2012–2015) also has a 4.2-litre V8, but with a 7-speed S tronic gearbox, while the B9 (from 2017) features a 2.9-litre twin-turbo V6 with an 8-speed automatic gearbox and the best daily driving experience. The B8 and B9 are only available as Avant estates.
Engines and gearboxes
B5 – 2.7 biturbo V6 (around 380 hp). B7 – 4.2 FSI V8 (around 420 hp) with a 6-speed manual gearbox. B8 – 4.2 FSI V8 (around 450 hp) with 7-speed S tronic. B9 – 2.9 TFSI biturbo V6 (around 450 hp) with an 8-speed tiptronic.
The quattro four-wheel drive system is used in all generations, distributing power between the axles. In newer generations, the rear axle can distribute torque between the wheels, making the car stable and dynamic.
What to check when buying a used RS4
First, find out if the car has been modified and how it has been used. Request the full service history, including oil changes, brake maintenance, and gearbox service.
Over time, deposits can build up on the intake valves in V8 FSI engines (B7, B8) with direct injection, so pay attention to uneven engine operation. In the case of the B5, it's essential to check the condition of the turbocharger and the engine's technical maintenance.
Check the brakes, tyres, suspension, and body condition. Since the RS4 is often driven aggressively, inspect for signs of repair work.
Trim levels
The RS4 is offered in one main trim level – differing by generation and optional packages; we list the most commonly found in Europe.
RS4 (B5)
1999–2001 model yearsThe first generation – only available as an Avant with a twin-turbo V6.
- 2.7 biturbo V6, around 380 hp
- Quattro and 6-speed manual gearbox
- Often – sport seats
RS4 (B7)
2005–2008 model yearsNaturally aspirated V8 with manual gearbox.
- 4.2 FSI V8, around 420 hp
- 6-speed manual gearbox
- Sedan, Avant estate and cabriolet
RS4 Avant (B8)
2012–2015 model yearsThe last generation with a naturally aspirated V8.
- 4.2 FSI V8, around 450 HP
- 7-speed S tronic
- Avant estate only
RS4 Avant (B9)
From 2017 onwardsThe latest generation with a twin-turbo V6.
- 2.9 TFSI biturbo V6, around 450 HP
- 8-speed tiptronic
- Digital cockpit, Avant estate only
Comparing the generations
| B5 | B7 | B8 | B9 | |
|---|---|---|---|---|
| Who it's for | For collectors | For enthusiasts who love V8s and manual gearboxes | For fans of the naturally-aspirated V8 | For everyday modern use |
| Engine | 2.7 V6 biturbo | 4.2 V8 | 4.2 V8 | 2.9 V6 biturbo |
| Transmission | Manual | Manual | S tronic | Tiptronic |
| Power | ~380 HP | ~420 HP | ~450 HP | ~450 HP |
| Price in the used market (relatively) | €€€ | €€€ | €€€ | €€€€ |
For most buyers, the best daily choice is the B9 for its modern tech. The B7 and B8 are worth considering for the atmospheric V8 sound, while the B5 is a rare classic.
Pros
- Dynamic handling and quattro drive
- Practical Avant estate
- Distinctive V8 sound in the B7 and B8
- Holds its value well
Cons
- High maintenance costs
- Large fuel consumption
- Many cars were driven aggressively
Frequently asked questions
Which RS4 generation is the best?
It depends on your priorities: if modern tech is key, go for the B9; if you want an atmospheric V8, choose the B7 or B8. The B5 is more of a collector's item.
Is the RS4 suitable for daily use?
Yes, especially the Avant estate, but expect higher fuel and maintenance costs than a standard A4.
Does the RS4 have a manual transmission?
The B5 and B7 have a manual transmission, while later generations come with an automatic only.
Updated 2026-10-17 · Trim levels and equipment vary by market and model year — check the equipment of the specific car. · Translated automatically
