2018 Porsche 718 Cayman 2.5 S

Overview

• Make: Porsche
• Model: 718 Cayman
• Trim: S
• Version: 2.5 T S PDK RWD Euro 6 (s/s) 2dr (345 bhp)
• Year: 2018
• Mileage: 80,544 miles
• Fuel: Petrol
• Body: Coupe, 2 doors, 2 seats
• Engine: 2.5 litres, 345 bhp
• Gearbox: Automatic (PDK)
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 167 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Porsche 718 Cayman is advertised with 80,544 miles, approximately 41,200 above the typical mileage for its age. Its asking price of £33,900 is £1,451 above the AskCar estimate of £32,449. The AskCar estimate uses UK dealer asking prices, including 314 Porsche 718 Cayman adverts, and accounts for the car’s age, mileage and specification. We have tracked this advert for 23 days. Its advertised mileage matches the government's MOT record. The seller is Sytner Select Northampton, based in Northampton. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 7 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,451 (4%) over the AskCar estimate of £32,449.

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 314 priced Porsche 718 Cayman adverts across different ages and specifications, as of 7 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 7 November 2026.

Time on sale

This 2018 Porsche 718 Cayman has been on sale for at least 23 days.

Price history

AskCar first saw this advert on 15 October 2026 at £33,900. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 7 November 2026: valid until 11 October 2027.

It has had 8 MOTs. The latest, on 12 October 2026, passed.

Advisories at the latest test: offside windscreen damaged but not adversely affecting driver's view small stone ship in zone A.

Mileage at that test: 80,734 miles, which matches the advertised 80,544 miles.

Advertised mileage is about 41,200 miles higher than the median mileage of a 2018 Porsche 718 Cayman on AskCar.

Similar cars

11 other 2018 Porsche 718 Cayman S 2.5 petrol automatic coupes are for sale at UK dealers, from £33,980 to £48,995, as of 7 November 2026.

The 3 closest to this car in mileage:

• 2018 Porsche 718 Cayman S, 2.5 petrol coupe, silver. Mileage: 51,000 miles. Price: £33,980, £80 more than this car. Dealer: Auto100.Co.Uk in Sutton in Ashfield. AskCar page: https://askcar.co.uk/car/porsche-718-cayman-2018-80dcf998545a
• 2018 Porsche 718 Cayman S, 2.5 petrol coupe, white. Mileage: 50,000 miles. Price: £38,780, £4,880 more than this car. Dealer: Auto100.Co.Uk in Sutton in Ashfield. AskCar page: https://askcar.co.uk/car/porsche-718-cayman-2018-068587ffc31d
• 2018 Porsche 718 Cayman S, 2.5 petrol coupe, grey. Mileage: 46,106 miles. Price: £39,455, £5,555 more than this car. Dealer: Northridge Cars Hemel Hempstead in Hemel Hempstead. AskCar page: https://askcar.co.uk/car/porsche-718-cayman-2018-ddbe0eb11e80

• The nearest: 2018 Porsche 718 Cayman S, 2.5 petrol coupe, grey, 30 miles from this car. Mileage: 40,920 miles. Price: £48,000, £14,100 more than this car. Dealer: Sytner Group Porsche Centre Leicester in Leicester. AskCar page: https://askcar.co.uk/car/porsche-718-cayman-2018-774bc6aa5f97