2018 Porsche 718 Cayman 2.5 GTS
Version: 2.5 GTS PDK RWD Euro 6 2dr (359 bhp)
Price: £47,950. Fair price: £1,419 (2%) under the AskCar estimate of £49,369, our expected asking price for this car from its model, age, mileage and specification, drawing on 302 priced Porsche 718 Cayman adverts on AskCar as of 1 November 2026.
AskCar lists 311 used Porsche 718 Cayman from 201 UK dealerships, as of 1 November 2026.
Overview
- Make
- Porsche
- Model
- 718 Cayman
- Trim
- GTS
- Version
- 2.5 GTS PDK RWD Euro 6 2dr (359 bhp)
- Mileage
- 34,350 miles
- Year
- 2018
- Fuel type
- Petrol
- Body type
- Coupe
- Engine
- 2.5 L
- Gearbox
- Automatic
- Power
- 359 bhp
- Seats
- 2
- CO2
- 209 g/km
- Colour
- Silver
- Doors
- 2
- Driven wheels
- Rear Wheel Drive
- Gearbox version
- PDK
- Engine badge
- GTS
- Emissions standard
- Euro 6
About this car
This 2018 Porsche 718 Cayman Gts has covered 34,350 miles, around 6,200 fewer miles than is typical for its age. The AskCar estimate for this car is £49,369. It is priced at £47,950, which is £1,419 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 302 Porsche 718 Cayman cars across different ages and specifications. It first appeared in our advert records today. MOT records show an expiry date of 26 August 2027, and the latest recorded mileage is consistent with the advert. The seller is H.R. Owen Specialist Cars Cheltenham, based in Cheltenham.
Stock data as of 1 November 2026.
Price history
AskCar first saw this advert on 1 November 2026.
| Date observed | Asking price |
|---|---|
| 1 November 2026 | £47,950 |
Price and mileage comparison
Fair price: £1,419 (2%) under the AskCar estimate of £49,369.
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 302 priced Porsche 718 Cayman adverts across different ages and specifications, as of 1 November 2026.
Advertised mileage is about 6,200 miles lower than the median mileage of a 2018 Porsche 718 Cayman on AskCar.
The advertised mileage is consistent with the last MOT reading.
MOT
MOT: valid until 26 August 2027. 33,759 miles at the last test.
Other matching cars
12 other 2018 Porsche 718 Cayman GTS automatic petrol cars are for sale at UK dealers from £39,950 to £59,999, as of 1 November 2026.
The 5 cheapest:
- 2018 Porsche 718 Cayman. Price: £39,950. Mileage: 74,332 miles. Dealer: Sytner Group Graypaul Maserati Edinburgh in Edinburgh. AskCar page: https://askcar.co.uk/car/porsche-718-cayman-2018-3dd589752ea5
- 2018 Porsche 718 Cayman. Price: £40,995. Mileage: 57,487 miles. Dealer: Eporsch in Camberley. AskCar page: https://askcar.co.uk/car/porsche-718-cayman-2018-3a9cbc1b0ed8
- 2018 Porsche 718 Cayman. Price: £42,595. Mileage: 50,000 miles. Dealer: Autothentic in Tockwith. AskCar page: https://askcar.co.uk/car/porsche-718-cayman-2018-f2a61dfa0925
- 2018 Porsche 718 Cayman. Price: £43,975. Mileage: 48,452 miles. Dealer: Junction 17 Cars Limited t/a Junction 17 Cars (Grantham) in Grantham. AskCar page: https://askcar.co.uk/car/porsche-718-cayman-2018-ef6cd33bb451
- 2018 Porsche 718 Cayman. Price: £44,995. Mileage: 24,000 miles. Dealer: Ace Prestige in Chalfont St Peter. AskCar page: https://askcar.co.uk/car/porsche-718-cayman-2018-eb12d0edc77b
The 12 matching cars have covered 6,429 to 74,332 miles, compared with 34,350 miles for this car.
Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. The AskCar estimate adjusts for these differences.
Browse all Porsche 718 Cayman cars for sale · 2018 Porsche 718 Cayman price guide
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Photos
46 photos of this car are on its AskCar page.
How to contact the dealer and its opening hours are on this AskCar page.
As of 1 November 2026, AskCar lists 578,994 cars and vans from 12,654 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.