2018 Porsche 718 Cayman 2.5 GTS

Overview

• Make: Porsche
• Model: 718 Cayman
• Trim: GTS
• Version: 2.5 GTS PDK RWD Euro 6 2dr (359 bhp)
• Year: 2018
• Mileage: 74,332 miles
• Fuel: Petrol
• Body: Coupe, 2 doors, 2 seats
• Engine: 2.5 litres, 359 bhp
• Gearbox: Automatic (PDK)
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 209 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 74,332 miles on the clock, this 2018 Porsche 718 Cayman Gts has done roughly 34,900 more miles than a typical 2018 Porsche 718 Cayman. Its asking price of £38,950 is £827 above the AskCar estimate of £38,123. To work out the AskCar estimate, we analyse UK dealer adverts for 315 Porsche 718 Cayman cars across different ages and specifications. We first saw this car advertised 14 days ago. Its asking price has since fallen by £1,000. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Sytner Group Graypaul Maserati Edinburgh, based in Edinburgh. 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: £827 (2%) over the AskCar estimate of £38,123.

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 2018 Porsche 718 Cayman with the 2.5 petrol engine is typically advertised at £45,000: the median of the 30 for sale on AskCar, as of 6 November 2026.

Time on sale

This 2018 Porsche 718 Cayman has been on sale for at least 14 days.

Price history

AskCar first saw this advert on 23 October 2026 at £39,950. Its asking price is now £38,950, £1,000 less. The latest price cut was seen on 4 November 2026.

Price changes recorded:

• 23 October 2026: £39,950
• 4 November 2026: £38,950

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 18 August 2027.

It failed its MOT on 29 July 2026 (offside front outer tyre has a bulge, caused by separation or partial failure of its structure 235/35R20) and passed 1 day later, on 30 July 2026.

There were no advisories at the latest test.

Mileage at that test: 73,096 miles, which matches the advertised 74,332 miles.

Advertised mileage is about 34,900 miles higher than the median mileage of a 2018 Porsche 718 Cayman on AskCar.

Similar cars

13 other 2018 Porsche 718 Cayman GTS 2.5 petrol automatic coupes are for sale at UK dealers, from £40,995 to £59,999, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2018 Porsche 718 Cayman GTS, 2.5 petrol coupe, black. Mileage: 57,487 miles. Price: £40,995, £2,045 more than this car. Dealer: Eporsch in Camberley. AskCar page: https://askcar.co.uk/car/porsche-718-cayman-2018-3a9cbc1b0ed8
• 2018 Porsche 718 Cayman GTS, 2.5 petrol coupe, grey. Mileage: 52,678 miles. Price: £46,798, £7,848 more than this car. Dealer: Group 1 Automotive Porsche Centre Portsmouth in Portsmouth. AskCar page: https://askcar.co.uk/car/porsche-718-cayman-2018-ec29cd8db2e4
• 2018 Porsche 718 Cayman GTS, 2.5 petrol coupe, white. Mileage: 50,000 miles. Price: £42,491, £3,541 more than this car. Dealer: Autothentic in Tockwith. AskCar page: https://askcar.co.uk/car/porsche-718-cayman-2018-f2a61dfa0925

• The nearest: 2018 Porsche 718 Cayman GTS, 2.5 petrol coupe, black, 4 miles from this car. Mileage: 48,000 miles. Price: £45,995, £7,045 more than this car. Dealer: Scotish Van Centre in Loanhead. AskCar page: https://askcar.co.uk/car/porsche-718-cayman-2018-749ae8898e76