Rally FORD SIERRA RS COSWORTH Clubman

This is a particularly interesting example of the legendary 1986 Ford Sierra RS Cosworth, built to Clubman Group A specification and incorporating a combination of genuine Ford Motorsport components, Group A competition equipment and selected Group N and standard production components.

One of the most significant features of this car is its genuine Ford Motorsport Group A seam welded bodyshell, identified by its original Ford Motorsport chassis identification plate, welded into the correct factory position. The authenticity of this important feature is further supported by the Ford Motorsport 909 series part numbering. A photograph of the chassis identification plate is available on our website.

The car has been refinished in the period correct Ford Motorsport livery, inspired by the Sierra driven by rally legend Stig Blomqvist in 1986.

Further original Ford Motorsport components include the genuine auxiliary front lamp pods, the original Magneti Marelli competition ECU, a works specification fuse box and the original, unmodified air filter housing.

Power comes from the legendary Ford Cosworth 2.0 litre turbocharged four cylinder engine, driving the rear wheels through a standard five speed manual gearbox with a conventional H pattern shift and a limited slip differential.

This left hand drive example was manufactured in 1986 and was first registered on 8 November 1986.

The engine hour meter currently displays approximately 64 operating hours.

In October 2026, the car underwent a technical assessment by Erwin Doctor, a former Dutch Ford factory rally driver, who competed in Ford rally cars of this era and has firsthand experience with this type of competition machinery.

The Sierra is supplied with four new OZ Racing rally wheels, measuring 8J x 17 inches, with a 4×108 bolt pattern and ET25 offset, fitted with four new racing tyres.

Equipment and Features

The Sierra RS Cosworth is finished in a striking white and blue colour scheme with silver and blue graphics, faithfully reflecting the appearance of Ford’s international rally cars of the 1980s.

The largely stripped competition interior features black cloth trimmed Sabelt GT3 bucket seats, Sabelt racing harnesses, a two spoke AP Sport steering wheel and a comprehensive selection of period inspired motorsport equipment.

Chassis, Suspension and Braking

• The foundation of this Sierra is its genuine Ford Motorsport Group A bodyshell, featuring extensive seam welding to increase structural rigidity.
• Its original Ford Motorsport chassis identification plate remains welded into the correct position, providing an important identifying feature of the competition bodyshell.
• The front suspension and suspension control arms retain standard production specifications, while the rear suspension features coilover shock absorbers.
• The rear braking system remains standard, while the front brakes have been upgraded with reinforced components, although these are not Group N specification.
• The braking system incorporates Group A specification brake master cylinders, a Group A competition pedal box and an adjustable brake balance regulator.
• A hydraulic handbrake is also fitted.
• An aluminium sump guard provides additional protection to the underside of the engine.

Engine, Transmission and Motorsport Electronics

• The Ford Cosworth 2.0 litre turbocharged engine is equipped with an original Ford Motorsport Magneti Marelli ECU.
• The original air filter housing remains intact and unmodified, preserving an important element of the period engine installation.
• The car also features selectable turbo boost settings.
• Power is transmitted through a standard five speed manual gearbox with a conventional H pattern gear selection, rather than a dogleg competition gearbox.
• A limited slip differential distributes power to the rear wheels.
• The electrical installation includes a works specification fuse box, another notable Ford Motorsport component.
• Competition Equipment

The Sierra is equipped with an extensive selection of competition components, including:

• Genuine Ford Motorsport Group A seam welded bodyshell
• Original Ford Motorsport chassis identification plate
• Genuine Ford Motorsport auxiliary front lamp pods
• Original Ford Motorsport Magneti Marelli ECU
• Works specification fuse box
• Original, unmodified air filter housing
• Group A racing fuel tank
• Group A brake master cylinders
• Group A competition pedal box
• Adjustable brake balance regulator
• Hydraulic handbrake
• Limited slip differential
• Rear coilover shock absorbers
• Reinforced front brakes
• Aluminium engine sump guard
• Four auxiliary front rally lamps
• Quick release bonnet and boot fasteners
• External emergency electrical cut off switches
• Full roll cage
• Sabelt GT3 competition seats and racing harnesses
• Plumbed in OMP fire extinguisher system
• Bespoke centre console with competition switches
• Roof mounted fresh air ventilation
• Perforated aluminium pedals
• Rear mud flaps
• Illuminated door panels
• Selectable turbo boost settings

The Group A fuel tank was previously certified until October 2022. The car is fitted with a full roll cage, although its manufacturer and exact specification have not been established. In addition to the new 17 inch OZ Racing wheels, the Sierra is supplied with a set of 15 inch Lattice alloy wheels fitted with Michelin Course tyres. Documentation includes maintenance invoices, its Monaco registration document and the paperwork required to obtain French registration.

Condition

• The car has been repainted during its lifetime and is currently presented in the distinctive Ford Motorsport livery inspired by Stig Blomqvist’s 1986 rally programme.
• The competition interior has been retrimmed, and the car is equipped with a combination of genuine Ford Motorsport components, Group A competition parts and selected standard production components.
• The tyres have been replaced with new items.
• Of particular interest is the preservation of the genuine Ford Motorsport bodyshell, including its original identification plate, together with several important period competition components.

Service History

According to the seller, the most recent service was carried out by Classic Affairs in February 2026, at approximately 64 operating hours.

The work included a comprehensive inspection, removal and professional overhaul of the turbocharger, cleaning of the intercooler and intake system following a turbocharger failure, cleaning of the exhaust system, replacement of reinforced exhaust mounts, an engine oil and filter service using Motul 300V 10W60, replacement of the NGK competition spark plugs, inspection of the lighting system, repairs to the underside of the bodywork and a road test.

The previous recorded service was carried out by DM Performance in July 2025.

This included an engine oil and filter change, replacement of the battery, repairs to the injector wiring, replacement of the brake fluid with Motul RBF700, a gearbox oil change and replacement of the NGK Iridium spark plugs.

An earlier service was recorded by AGS Racing in May 2021.

Technical Assessment, October 2026

• In October 2026, the Sierra was technically assessed by Erwin Doctor, a former Dutch Ford factory rally driver with firsthand experience of Ford’s competition cars from this period.
• Having competed in this type of machinery during his rally career, Doctor brings valuable period knowledge and practical experience to the technical assessment of the vehicle.
• This assessment provides additional insight into the car’s specification and the combination of genuine Ford Motorsport, Group A and standard production components.

Summary

The Ford Sierra RS Cosworth is one of the most recognisable homologation performance cars of the 1980s, with its turbocharged engine, rear wheel drive layout and unmistakable competition heritage.

This particular example offers something especially interesting: a genuine Ford Motorsport Group A seam welded bodyshell, complete with its original Ford Motorsport chassis identification plate welded into the correct factory position.

The presence of several original Ford Motorsport components, including the Magneti Marelli competition ECU, works specification fuse box, genuine auxiliary lamp pods and unmodified air filter housing, further contributes to its appeal.

Rather than being presented as a full factory Group A rally car, this Sierra is accurately described as a Clubman Group A specification competition car, combining authentic Ford Motorsport components with selected Group A upgrades and standard production mechanical elements.

The October 2026 technical assessment by former Ford factory rally driver Erwin Doctor adds an interesting connection to the period and provides valuable insight into the car’s technical configuration.

Finished in the iconic Stig Blomqvist inspired 1986 Ford Motorsport livery, the car captures the unmistakable appearance and atmosphere of Ford’s international rally programme.

With its genuine Motorsport bodyshell, period competition components, documented maintenance history and distinctive presentation, this Sierra RS Cosworth represents an attractive opportunity for collectors and enthusiasts of historic Ford competition cars.

A genuine Ford Motorsport bodyshell, authentic period competition components and iconic 1980s rally styling, an appealing combination for the discerning Ford Motorsport enthusiast.