A Ford GT, Escort RS1600 and two Sierra Cosworths are set to go under the hammer.

A clutch of classic fast Fords, including a rare 1986 Sierra Cosworth RS500 and a 2006 GT, are set to go under the hammer later this month.

Silverstone Auctions’ September Sale, which is held at the Dallas Burston Polo Club in Warwickshire, expects to see the four classics fetch a combined total of around £400,000.

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Headlining the sale is the white Ford GT, which is one of just 27 vehicles delivered to the UK and has covered just over 5,000 miles. With a 5.4-litre V8 producing 550 bhp, the blue-collar supercar is capable of 0-60 mph in just 3.5 seconds and a top speed of 205 mph. This example, which comes with blue racing stripes and a black interior, is estimated to sell for up to £260,000.

The 1972 Escort RS1600 is also expected to fetch big bucks, being one of the few examples restored to completely standard specification. Finished in a bold hue called Le Mans Green, the car was refurbished from the ground up by Ford specialists Andy Stapley Motorsport. Since then, the car has covered just over 3,500 miles, and it is described by the auction house as “phenomenal”. An estimated sale price of up to £70,000 suggests the car might be as good as it looks.

Ford Escort RS1600

Also at the sale will be a pair of Sierra RS Cosworths, which have already gained a cult following in modern classic circles.

The more valuable of the two, with an estimated price tag of up to £42,000, is the Sierra Wolf RS500. One of only 10 Sierra RS500 Cosworths to be uprated by the Ford Works DTM (German Touring Cars) team, Wolf Racing, the left-hand-drive example going under the hammer was built for the German market.

Upgrades include a 300 bhp engine, lowered suspension and gold alloy wheels, along with the usual accoutrements of the already-rare Sierra Cosworth RS500 model. Like all the ‘Wolf’ RS500s, this car is finished in Moonstone Blue. Having been imported to the UK just this year and reading just 24,000 on the odometer, the auction house says the car “presents excellently”.

Ford Sierra RS500 Wolf

Finally, a 1990 Sierra Sapphire Cosworth 4x4 will also be joining the line-up. Believed to be one of the first six all-wheel-drive examples to roll off the production line, the car has covered just 13,310 miles since it was registered to an owner in Essex on August 1, 1990. Twenty-eight years later, the owner has decided to hang up her driving gloves, and her car is expected to fetch up to £35,000 at the sale.

“Fords have the unique quality of universal appeal, with their popularity stretching from the entry level Escort models all the way to their iconic supercar, the GT,” said Harry Whale, classic car specialist at Silverstone Auctions. “Ford’s success and dedication to motor sport has not only filled their trophy cabinet but has delivered a fantastic selection of motorsport derived special editions for enthusiasts. The idea of ‘win on Sunday, sell on Monday’ has never been truer than with Ford.”

Gallery: Classic Fords could fetch £400,000 at auction