Audi
Sport quattro S1 E2 works cars

Why it matters

The S1 E2 was the final evolution of Audi's Group B rally car and is widely regarded as the most powerful of its class, with a reported output of roughly 550 hp. Its wind-tunnel-shaped carbon-Kevlar bodywork and rearward weight shift make it the best-known image of the Group B era.

How rare is it?

Six separate kinds of rarity – never combined into one number.

Each kind of rarity is rated separately and never combined.

Production

Every figure says what it counts.

Independent counts (e.g. engine and colour) are never combined into a calculated figure. Surviving examples are never presented as original production.

History

The Sport quattro of 1984 was fast but front-heavy, and drivers struggled with it. The E2 debuted in August 1985 on the same alloy five-cylinder 20-valve engine, with heavy components such as radiator, fans and coolers moved to the rear to bring the balance back to almost 50:50. Walter Rohrl and Christian Geistdorfer won the 1985 San Remo round with it.

Audi built 20 E2s, and about 15 are believed to survive, of which six contested a WRC round.

Technical specifications

Engine

Transmission & drivetrain

Chassis, body & dimensions

Performance

“Not yet verified” means no source has been checked for that value yet. Nothing is estimated to fill a gap.

Identification guide

How to tell an original from a replica or later conversion.

Look for the large wind-tunnel-shaped carbon-Kevlar body with enormous arches, airdam and rear wing, and a boot containing the oil, water and gearbox coolers with fans. Works cars carry Audi Sport internal numbers, for example RE10 for the car Hannu Mikkola drove on the 1985 RAC Rally. One catalogue notes that the chassis stamping on the front bulkhead had its last digit partly altered during rallycross preparation, so stamping should be checked against documents.

Sources

Each number links to the exact facts it supports.

1. 1
   1985 Audi Sport quattro S1 E2 | RM Sotheby's Level B

   • 20 Sport quattro S1 E2 cars built by Audi (about 15 believed to survive)

   Accessed 2026-11-11
2. 2
   1985 Audi Sport quattro S1 E2 (London 2022) Level C RM Sotheby's

   • Only 15 quattro S1 E2s are believed to exist of the 20 built
   • five-cylinder alloy-block with a 20-valve aluminium head
   • power output was approximately 550 horsepower
   • much of which was carbon-Kevlar composite

   Accessed 2026-11-12
3. 3
   1985 Audi Sport quattro S1 E2 (Monaco 2024) Level C RM Sotheby's

   • One of just 20 Audi Sport quattro S1 E2s ever built

   Accessed 2026-11-12