2020 Porsche 718 Cayman 4.0 GT4

Overview

• Make: Porsche
• Model: 718 Cayman
• Trim: GT4
• Version: 4.0 GT4 PDK RWD Euro 6 2dr (414 bhp)
• Year: 2020
• Mileage: 21,758 miles
• Fuel: Petrol
• Body: Coupe, 2 doors, 2 seats
• Engine: 4.0 litres, 414 bhp
• Gearbox: Automatic (PDK)
• Drive: Rear-wheel drive
• Colour: Black
• CO2: 242 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

The advertised mileage for this 2020 Porsche 718 Cayman Gt4 is 21,758 miles. Its asking price of £75,990 is £137 below the AskCar estimate of £76,127. To work out the AskCar estimate, we analyse UK dealer adverts for 315 Porsche 718 Cayman cars across different ages and specifications. Since we first spotted the advert 42 days ago, the asking price has dropped by £2,000. We checked its advertised mileage against the government's MOT record, and they match. You can find this car at G C Motors in Harrogate. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Fair price: £137 (under 1%) under the AskCar estimate of £76,127.

The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.

It draws on 315 priced Porsche 718 Cayman adverts across different ages and specifications, as of 6 November 2026.

A 2020 Porsche 718 Cayman with the 4.0 petrol engine is typically advertised at £75,000: the median of the 14 for sale on AskCar, as of 6 November 2026.

Time on sale

This 2020 Porsche 718 Cayman has been on sale for at least 42 days.

Price history

AskCar first saw this advert on 25 September 2026 at £77,990. Its asking price is now £75,990, £2,000 less. The latest price cut was seen on 6 October 2026.

Price changes recorded:

• 25 September 2026: £77,990
• 30 September 2026: £76,980
• 6 October 2026: £75,990

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 16 July 2027.

It has had 3 MOTs. The latest, on 17 July 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 21,166 miles, which matches the advertised 21,758 miles.

Advertised mileage is about 1,300 miles higher than the median mileage of a 2020 Porsche 718 Cayman on AskCar.

Similar cars

1 other 2020 Porsche 718 Cayman GT4 4.0 petrol automatic coupe is for sale at UK dealers, as of 6 November 2026.

The closest to this car in mileage:

• 2020 Porsche 718 Cayman GT4, 4.0 petrol coupe, silver. Mileage: 3,964 miles. Price: £87,990, £12,000 more than this car. Dealer: The Auto Lounge in Stonehaven. AskCar page: https://askcar.co.uk/car/porsche-718-cayman-2020-5afe64cde83b