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: 30,000 miles
• Fuel: Petrol
• Body: Coupe, 2 doors, 2 seats
• Engine: 2.5 litres, 345 bhp
• Gearbox: Automatic (PDK)
• Drive: Rear-wheel drive
• Colour: White
• CO2: 167 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Porsche 718 Cayman is advertised with 30,000 miles, approximately 9,400 below the typical mileage for its age. The dealer is asking £39,995, which is £5,137 below the AskCar estimate of £45,132. To work out the AskCar estimate, we analyse UK dealer adverts for 315 Porsche 718 Cayman cars across different ages and specifications. This car was first seen in our listings data 34 days ago. The government's MOT record matches its advertised mileage. You can find this car at Southern Prestige Cars in Crawley. 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

Good value: £5,137 (11%) under the AskCar estimate of £45,132.

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 34 days.

Price history

AskCar first saw this advert on 3 October 2026 at £39,995. 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 6 November 2026: valid until 8 February 2027.

It has had 6 MOTs. The latest, on 9 February 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 29,767 miles, which matches the advertised 30,000 miles.

Advertised mileage is about 9,400 miles lower 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 £33,900 to £48,995, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2018 Porsche 718 Cayman S, 2.5 petrol coupe, silver. Mileage: 30,924 miles. Price: £48,490, £8,495 more than this car. Dealer: Stratstone Porsche Centre Wolverhampton in Wolverhampton. AskCar page: https://askcar.co.uk/car/porsche-718-cayman-2018-7bb9e8eaba9d
• 2018 Porsche 718 Cayman S, 2.5 petrol coupe, blue. Mileage: 27,100 miles. Price: £48,499, £8,504 more than this car. Dealer: Rom Motors in Atherstone. AskCar page: https://askcar.co.uk/car/porsche-718-cayman-2018-118df796ab14
• 2018 Porsche 718 Cayman S, 2.5 petrol coupe, white. Mileage: 37,000 miles. Price: £38,970, £1,025 less than this car. Dealer: Performance Paddock in Rochester. AskCar page: https://askcar.co.uk/car/porsche-718-cayman-2018-32a9f8fa91da

• The nearest: 2018 Porsche 718 Cayman S, 2.5 petrol coupe, silver, 32 miles from this car. Mileage: 41,000 miles. Price: £43,000, £3,005 more than this car. Dealer: Rsj Sports Cars in Slough. AskCar page: https://askcar.co.uk/car/porsche-718-cayman-2018-21a5b259d348