2023 Porsche 718 Cayman 4.0 GT4 RS
Price: £121,995. Fair price: £308 (under 1%) over the AskCar estimate of £121,687, our expected asking price for this car from its model, age, mileage and specification, drawing on 318 priced Porsche 718 Cayman adverts on AskCar as of 10 November 2026.
AskCar lists 332 used Porsche 718 Cayman from 216 UK dealerships, as of 10 November 2026.
Overview
- Make: Porsche
- Model: 718 Cayman
- Trim: GT4 RS
- Version: 4.0 GT4 RS PDK RWD Euro 6 2dr (493 bhp)
- Year: 2023
- Mileage: 18,700 miles
- Fuel: Petrol
- Body: Coupe, 2 doors, 2 seats
- Engine: 4.0 litres, 493 bhp
- Gearbox: Automatic (PDK)
- Drive: Rear-wheel drive
- Colour: Grey
- Emissions standard: Euro 6, ULEZ compliant
About this car
This 2023 Porsche 718 Cayman Gt4 RS is advertised with 18,700 miles, approximately 5,600 above the typical mileage for its age. The dealer is asking £121,995, which is £308 above the AskCar estimate of £121,687. To work out the AskCar estimate, we analyse UK dealer adverts for 318 Porsche 718 Cayman cars across different ages and specifications. We have tracked this advert for 12 days. It is for sale at RPM Technik in Marston. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 10 November 2026.
RPM Technik is rated 4.8 out of 5 on Google.
Price
Fair price: £308 (under 1%) over the AskCar estimate of £121,687.
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 318 priced Porsche 718 Cayman adverts across different ages and specifications, as of 10 November 2026.
A 2023 Porsche 718 Cayman with the 4.0 petrol engine is typically advertised at £85,500: the median of the 21 for sale on AskCar, as of 10 November 2026.
Time on sale
This 2023 Porsche 718 Cayman has been on sale for at least 12 days.
Price history
AskCar first saw this advert on 29 October 2026 at £121,995. Its asking price has not changed.
Mileage and MOT
Advertised mileage is about 5,600 miles higher than the median mileage of a 2023 Porsche 718 Cayman on AskCar.
Similar cars
6 other 2023 Porsche 718 Cayman GT4 RS 4.0 petrol automatic coupes are for sale at UK dealers, from £126,995 to £144,995, as of 10 November 2026.
The 3 closest to this car in mileage:
- 2023 Porsche 718 Cayman GT4 RS, 4.0 petrol coupe, white. Mileage: 13,142 miles. Price: £127,900, £5,905 more than this car. Dealer: Baytree Cars in Derby. AskCar page: https://askcar.co.uk/car/porsche-718-cayman-2023-cb990236db15
- 2023 Porsche 718 Cayman GT4 RS, 4.0 petrol coupe, silver. Mileage: 12,000 miles. Price: £128,995, £7,000 more than this car. Dealer: Matt Johnson Prestige in Barrow-in-Furness. AskCar page: https://askcar.co.uk/car/porsche-718-cayman-2023-b35695e82918
- 2023 Porsche 718 Cayman GT4 RS, 4.0 petrol coupe, grey. Mileage: 11,500 miles. Price: £126,995, £5,000 more than this car. Dealer: GKirby Collection in Warninglid. AskCar page: https://askcar.co.uk/car/porsche-718-cayman-2023-68b20817325c
Browse all Porsche 718 Cayman cars for sale · 2023 Porsche 718 Cayman price guide
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Photos
20 photos of this car are on its AskCar page.
As of 10 November 2026, AskCar lists 591,054 cars and vans from 12,888 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.