FOR SALE JF Classic Cars present a legendary Ford Sierra RS 'Whale tale' Cosworth in Diamond White with only 73526 miles from new and three former keepers DESCRIPTION Chosen for its aerodynamic profile and ideal proportions, the Ford Sierra provided the perfect foundation for a Group A competition car. Its sleek, wind-cheating design and balanced chassis made it a natural candidate for transformation into something truly special. In a bid to inject excitement and prestige into the Sierra range, Ford launched a high-profile motorsport programme and from that vision, the Sierra RS Cosworth was born. Collaborating with the engineering legends at Cosworth, Ford commissioned the development of a turbocharged variant of the Sierra’s robust 2.0-litre inline-four engine. The result was nothing short of revolutionary a car that combined road-going practicality with race-bred performance, setting new benchmarks for the era. Production took place at Ford’s Genk plant in Belgium, with assembly beginning in July 1986 and continuing through to January 1987, marking the creation of one of Ford’s most celebrated performance icons EXTERNAL Finished in what many enthusiasts regard as the ultimate colour for the Sierra Cosworth Ford Diamond White (Paint Code B3) this example presents in outstanding condition throughout. The paintwork displays a rich, glossy depth across every panel, perfectly reflecting the care and preservation shown by its limited ownership. Panel gaps are tight and consistent from nose to tail, aligning precisely as Ford intended. At the front, the distinctive Cosworth bumper remains free from scuffs or marks and houses the signature array of large cooling intakes designed to channel airflow to both the brakes and radiator. Above, the sculpted nose panel aids air delivery to the intercooler, while the twin bonnet vents allow hot air to escape efficiently from the engine bay a purposeful and defining hallmark of the RS’s motorsport heritage. Wide wheel arch extensions and contoured side skirts emphasise the car’s muscular stance, complemented perfectly by the legendary rear ‘whale-tail’ spoiler that completes this unmistakable Cosworth profile. All exterior trims and colour-coded mirrors are in exceptional condition, showing no signs of ageing or discolouration. The original Cibie headlamp glass remains completely chip- and fade-free, while the rear light clusters are clear and unblemished. Original factory glazing is retained throughout including windscreen, side, and rear glass each pane still displaying the correct factory etchings. Surrounding door and window rubbers remain soft, fresh, and tarnish-free, further underlining the car’s authenticity. Beneath, the underside of the vehicle is every bit as impressive as the bodywork above, remaining remarkably clean and correct, a true reflection of the meticulous preservation this iconic RS Cosworth has enjoyed INTERNAL Stepping inside the cabin of this Sierra RS Cosworth is an experience that transports you straight back to the golden era of Ford performance motoring. The interior can only be described as an absolute pleasure to sit in a perfectly preserved cockpit that blends comfort, functionality, and period charm in equal measure. The factory-fitted Recaro sports seats, finished in Ford Roma Grey cloth, present in very good condition throughout. The deep, supportive bolsters hold you firmly in place exactly as intended when this car first left the showroom. The rear seats appear barely used, matching the condition of the fronts and further reinforcing the car’s cherished history Beneath, the grey luxury-pile carpet remains in very good condition throughout, The door cards, trimmed in matching grey with integrated armrests, present beautifully and remain true to Ford’s original specification. Every element of the cabin retains its factory authenticity. The dashboards crack and fade-free a rare find even among well-preserved examples with all switchgear functioning exactly as Ford intended. The LCD warning display, monitoring bulb failures and open doors, operates perfectly with each indicator light illuminating precisely as it should. Equipment levels were impressive for the time, and this example proudly retains all of its desirable factory features. These include electrically adjustable and heated door mirrors, tinted glass all round, a tailgate wash/wipe system, laminated windscreen, and an extended centre console housing the cigar lighter and quartz digital clock. The fascia light dimmer, leather gear knob, and three-spoke leather sports steering wheel enhance the driver’s connection to the car, while the three-speed heater fan and original Ford electronic sound system (Model ECU2) with power amplifier all function as intended. The Recaro sports front seats are complemented by split-folding rears, and overhead sits the factory tilt and slide glass sunroof. Ahead of the driver, the binnacle displays a tachometer with turbo boost gauge and trip recorder, while the anti-lock braking system with failure warning light ensures confidence under braking. Electric front windows complete the specification, all working precisely as intended Every switch, button, and feature works exactly as it should a testament to careful ownership and proper maintenance. From the unmarked dashboard to the supple Recaro upholstery, this interior remains a beautifully preserved environment a true time-warp example of Ford craftsmanship at its finest. ENGINE & TRANSMISSION The original RS Cosworth power plant warrants little introduction. Fitted with the standard 2.0 Dual Overhead Cam (DOHC) with Garrett AiResearch T3 turbocharger and intercooler, the motorsport pedigree of this car is unrivaled. With an output of 204HP allowing the car to accelerate smoothly with 0-60 achieved in 6.2 seconds and will reach a top speed of 149mph, this truly is a recipe to set the heart racing. The engine starts at the flick of the key with power delivery throughout all gears on tap as required, With progressive take up on the clutch ensuring a smooth transgression throughout, Simply a pleasure to drive WHEELS, TYRES & BRAKES The standard original specification 15 x 7 inch RS Sierra Cosworth alloy wheels are shod with premium tyres 205/50 R15 all round, with excellent tread remaining Retaining the factory standard finish, the wheels are exceptional in condition and unmarked Diagonally split hydraulic brake circuits, Anti-lock braking assisted 28.3cm ventilated discs up front and 27.3cm discs at the rear bring the car to a sure and steady halt. HISTORY FILE First registered on the 12th September 1986 by Ford London, Covering only 73526 miles from new backed up by a full complement of services stamped as followed in the Ford service book: 25-9-1986-1554 miles 23-4-1987-10782 miles 18-9-1987-17879 miles 7-1-1988-24524 miles 19-4-1988-30275 miles 17-8-1988-36400 miles 18-12-1988-43057 miles 19-4-1989-48114 miles 13-9-1989-53656 miles 1989-1994 Storage 15-5-1994-57405 miles 10-8-1996-60450 miles 8-4-1998-61479 miles 10-6-2000-62745 miles 09-8-2001-63652 miles 02-5-2002-64237 miles 13-11-2003-67115 miles 18-4-2005-68509 miles 10-7-2006-70315 miles 72520 miles service + timing belt In storage up until 2025 Having covered very little miles since, 73526 to be precise The history accompanying this Sierra RS Cosworth is as exceptional as the car itself a clear reflection of the care and respect it has enjoyed throughout its life. Supplied new by Ford, this example comes complete with its original dealer book pack, containing the stamped service book, owner’s manuals, and supplementary Ford literature, exactly as presented to its first owner back in 1986. Accompanying the documentation is a collection of historic service invoices and maintenance receipts, providing a detailed record of the car’s life and the meticulous attention it has received over the decades. The original keys are present, further confirming the car’s authenticity and careful preservation. Every aspect of this Cosworth’s history reinforces the fact that it has been cherished and maintained to the highest standard, not simply stored away but kept in full working order From the condition of the mechanical components to the originality of its presentation, it is evident this is a highly cared-for example, one that has escaped the fate of many modified or neglected cars of its kind. A genuine and unspoiled RS Cosworth this is a true collector’s piece the type of car that rarely surfaces in this condition. For the serious Ford enthusiast or investor, this example represents an opportunity to acquire a cornerstone of Ford’s performance heritage a car that defined an era and continues to captivate decades later. v5 Present & HPi Clear.