As per Art. 4.1.4 to FIA Appendix K: For any homologated car, the HTP must be accompanied by an ASN certified copy (printed on FIA stamped/watermarked paper with an ASN additional authentication) of the car’s original Homologation Form or a ASN certified copy (printed on FIA stamped/watermarked paper with an ASN additional authentication) of the car’s Retrospective Homologation Form.
None of the forms available on this website will be recognised as valid on an event, this is for consultation only.

Audi Sport Quattro S1

Homologation number: 
264
Make: 
Audi
Model: 
Sport Quattro S1
Group: 
B
Cylinder capacity: 
2988
Transmission: 
4WD
No of cylinder: 
5
Country: 
Germany
Date of homologation: 
May 1, 1984
End of homologation: 
December 31, 1990
List of extensions 17 open
1/1VO
01/05/1984
Rollbar
2/2VO
01/05/1984
Engine, Tank, Transmission, Brake, Suspension
3/1ET
01/05/1984
Engine, Gearbox, Dimension, Final drive ratio, Bodywork, Interior
4/3VO
01/07/1984
Suspension, Brake, Tank
5/4VO
01/01/1985
Final drive ratio
6/1ER
01/02/1985
Dimension
7/2ER
01/04/1985
Engine
8/5VO
01/04/1985
Steering, Brake
9/6VO
01/04/1985
Suspension
10/7VO
01/07/1985
Rollbar
11/8VO
01/07/1985
Lubrication, Final drive ratio, Steering, Suspension, Bodywork
12/1ES
01/07/1985
Bodywork, Engine, Gearbox, Dimension, Transmission, Dashboard, Reinforcement, Interior
13/3ER
01/01/1986
Turbo
14/4ER
01/01/1986
Dimension
15/5ER
01/04/1986
Gearbox ratios, Engine
16/6ER
01/10/1986
Bodywork
17/7ER
01/01/1988
Cylinder capacity

Homologation forms & list of extensions