Ford · 1986
Sierra RS Cosworth
Manual · RWD · Europe
AutoIndex value · good UK car
£50,000
Researched from UK sold prices and auction results. How we value cars
Estimated price by condition
Project
£30,000
Restoration candidate
Driver
£50,000
Good usable example
Concours
£75,000
Show standard
Indicative condition bands · not a valuation of a particular car
Price check
Looking at a Sierra RS Cosworth for sale? Is it a good price?
Buyer’s notes
About the Ford Sierra RS Cosworth
Ford built the Sierra RS Cosworth to win Group A touring-car races. Its turbocharged 2.0-litre YB engine paired a Cosworth-designed 16-valve head with a Ford block, and the large rear wing was shaped for stability at racing speeds. It went on sale in July 1986, and 5,545 three-door cars were built at Genk in Belgium; 500 of them were converted by Aston Martin Tickford into the RS500.
What moves the price
- Originality: unmodified, never-stolen cars carry a large premium, and many engines have been tuned.
- History: theft recovery, modification and re-identification are part of many cars’ records, and values depend on a clean, verifiable one.
- RS500 status: the Tickford conversions sit at the top of the family, but only with their identity confirmed through the owners’ club register.
Before you buy, check
- The engine: one that has been run hard at high boost needs careful inspection.
- Rust in the sills, floors, rear arches and suspension mounts.
- Engine, gearbox and body numbers against the documents, and any theft and recovery history.
From our research for Fast Fords · Lotus Cortina to Escort Cosworth, which covers it in full.
Vehicle data
Specifications
From 1986
Performance
Production
Own one?
Follow what your Sierra RS Cosworth is worth
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AutoIndex Editions · Volume XII
Read the full Ford dossier
Fast Fords · Lotus Cortina to Escort Cosworth — 48 pages of history, production data, ownership economics and the market view, car by car.
Ford Sierra RS Cosworth: value questions answered
- How much is a Ford Sierra RS Cosworth worth?
- A good, usable UK example of the Ford Sierra RS Cosworth is worth around £50,000 on the AutoIndex index. A project car that needs restoration is nearer £30,000, and a concours-quality example around £75,000. Condition moves the price more than anything else.
- What makes one Sierra RS Cosworth worth more than another?
- Service history and paperwork — complete, stamped, explained
- Mileage against the norm for the model
- Originality — matching numbers, original paint and trim
- Specification — gearbox, colour, factory options
- UK-supplied versus imported
- Is the Sierra RS Cosworth I'm looking at fairly priced?
- Enter its asking price and condition in the price check above. It compares the price with the index for that condition and tells you what to ask the seller about.
- How many Sierra RS Cosworth cars were built?
- Around 15,625 were built, by our production records.
- Is there a buyer's guide to the Sierra RS Cosworth?
- Yes: Fast Fords · Lotus Cortina to Escort Cosworth, a 48-page collector’s guide. You can read a complete dossier free before you buy it.
Embed this valueFor club pages, forum posts and listings: a live value card that links back here.+
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