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Ford Sierra Cosworth
Sierra - Sierra Cosworth (1986-1992)
1987 Ford Sierra - ARE RS500 Continuation - Group A Specification
1987
100 miles
Manual
Petrol
Varde
£88,150
Estimate: £100,000 – £150,000
Bidding ends 6 Sept at 18:36
Photos and the full gallery are available on Collecting Cars's own listing page, linked below.
Listing Source
Collecting Cars
Auction
Auction Date
Sunday, 6 September 2026
Ends at 18:36
6 days remaining
Estimate
£100,000 - £150,000
Location
Varde
About the Sierra RS500 Cosworth
The Ford Sierra RS500 Cosworth (1987) was the ultimate Sierra. Just 500 built for homologation with larger turbo, intercooler, and fuel system producing 224hp standard (500hp+ in race trim). Moonstone Blue, whale-tail, and victory. Touring car legend (Tim Harvey, Andy Rouse). Values from £150k.
Known Issues to Watch For
Sierra Cosworth: Engine - YB Cosworth turbo. Head gasket critical (especially early RS500s), timing belt every 36k, water pump, turbo (Garrett T3/T4). Strong if maintained. RS500 - even more stressed. Gearbox - T5/MT75 5-speed strong. 4x4 (Sapphire) - viscous coupling, transfer box. Body - Less rust than 70s Fords but check sills, inner wings. Rear spoiler expensive. Authenticity - Check chassis plate, build spec. Values rising - RS500 commanding serious money. Budget £4-8k annually.
Desirable Options
RS500 (ultimate), 3-door RS (iconic), Sapphire 4x4 (practical), Unmodified, Matching numbers, Full history
Specifications
Performance
Horsepower224 hp
Engine & Drivetrain
Engine0.0L
Fuel TypePetrol
TransmissionManual
Drive TypeRWD
Vehicle Details
Year1987
Mileage100 miles
Body StyleCoupe
Production Info
Production Years1987 - 1987
GenerationSierra
Listing Source
Collecting Cars
Auction
Auction Date
Sunday, 6 September 2026
Ends at 18:36
6 days remaining
Estimate
£100,000 - £150,000
Location
Varde
£88,150
1987100 milesManual
