2018 Porsche 718 Cayman 2.5 GTS

Overview

• Make: Porsche
• Model: 718 Cayman
• Trim: GTS
• Version: 2.5 T GTS PDK RWD Euro 6 (s/s) 2dr (360 bhp)
• Year: 2018
• Mileage: 48,452 miles
• Fuel: Petrol
• Body: Coupe, 2 doors, 2 seats
• Engine: 2.5 litres, 360 bhp
• Gearbox: Automatic (PDK)
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 186 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Porsche 718 Cayman Gts has covered 48,452 miles, around 9,100 more miles than is typical for its age. Priced at £43,975, it is advertised £866 below the AskCar estimate of £44,841. The AskCar estimate uses 315 UK dealer adverts for the Porsche 718 Cayman, with adjustments for age, mileage, trim, engine and other specifications. We first recorded this advert 42 days ago, and its asking price has since fallen by £2,000. Its advertised mileage matches the government's MOT record. The seller is Junction 17 Cars Limited t/a Junction 17 Cars (Grantham), based in Grantham. 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: £866 (1%) under the AskCar estimate of £44,841.

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 42 days.

Price history

AskCar first saw this advert on 25 September 2026 at £45,975. Its asking price is now £43,975, £2,000 less. The latest price cut was seen on 1 October 2026.

Price changes recorded:

• 25 September 2026: £45,975
• 1 October 2026: £43,975

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 November 2026.

It has had 7 MOTs. The latest, on 10 November 2025, passed.

Advisories at the latest test: nearside rear inner brake pad(s) wearing thin; offside rear inner brake pad(s) wearing thin.

Mileage at that test: 45,006 miles, which matches the advertised 48,452 miles.

Advertised mileage is about 9,100 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 £38,950 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: 48,000 miles. Price: £45,995, £2,020 more than this car. Dealer: Scotish Van Centre in Loanhead. AskCar page: https://askcar.co.uk/car/porsche-718-cayman-2018-749ae8898e76
• 2018 Porsche 718 Cayman GTS, 2.5 petrol coupe, white. Mileage: 50,000 miles. Price: £42,491, £1,484 less than this car. Dealer: Autothentic in Tockwith. AskCar page: https://askcar.co.uk/car/porsche-718-cayman-2018-f2a61dfa0925
• 2018 Porsche 718 Cayman GTS, 2.5 petrol coupe. Mileage: 50,000 miles. Price: £44,999, £1,024 more than this car. Dealer: MSK Cars in London. AskCar page: https://askcar.co.uk/car/porsche-718-cayman-2018-363798003d72

• The nearest: 2018 Porsche 718 Cayman GTS, 2.5 petrol coupe, orange, 48 miles from this car. Mileage: 6,429 miles. Price: £59,999, £16,024 more than this car. Dealer: The Car Specialists in Sheffield. AskCar page: https://askcar.co.uk/car/porsche-718-cayman-2018-9750ad65f079