2018 Porsche 718 Boxster 2.5 GTS

Overview

• Make: Porsche
• Model: 718 Boxster
• Trim: GTS
• Version: 2.5 GTS PDK RWD Euro 6 2dr (359 bhp)
• Year: 2018
• Mileage: 27,000 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 2 seats
• Engine: 2.5 litres, 359 bhp
• Gearbox: Automatic (PDK)
• Drive: Rear-wheel drive
• Colour: White
• CO2: 210 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 27,000 miles, this 2018 Porsche 718 Boxster Gts has covered about 8,500 fewer miles than other 2018 Porsche 718 Boxster cars. The AskCar estimate for this car is £53,974. It is priced at £53,000, which is £974 below that estimate. The AskCar estimate draws on 202 Porsche 718 Boxster adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We have tracked this advert for 12 days. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Rsj Sports Cars, based in Slough. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 10 November 2026.

How we estimate prices and check cars

Price

Fair price: £974 (1%) under the AskCar estimate of £53,974.

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 202 priced Porsche 718 Boxster adverts across different ages and specifications, as of 10 November 2026.

A 2018 Porsche 718 Boxster with the 2.5 petrol engine is typically advertised at £47,500: the median of the 13 for sale on AskCar, as of 10 November 2026.

Time on sale

This 2018 Porsche 718 Boxster has been on sale for at least 12 days.

Price history

AskCar first saw this advert on 29 October 2026 at £53,000. 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 10 November 2026: valid until 29 May 2027.

It has had 5 MOTs. The latest, on 30 May 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 25,980 miles, which matches the advertised 27,000 miles.

Advertised mileage is about 8,500 miles lower than the median mileage of a 2018 Porsche 718 Boxster on AskCar.

Similar cars

11 other 2018 Porsche 718 Boxster GTS 2.5 petrol automatic convertibles are for sale at UK dealers, from £30,975 to £61,995, as of 10 November 2026.

The 3 closest to this car in mileage:

• 2018 Porsche 718 Boxster GTS, 2.5 petrol convertible, red. Mileage: 29,300 miles. Price: £55,990, £2,990 more than this car. Dealer: Bowker Motor Group in Preston. AskCar page: https://askcar.co.uk/car/porsche-718-boxster-2018-3c8c278e9db6
• 2018 Porsche 718 Boxster GTS, 2.5 petrol convertible, silver. Mileage: 31,000 miles. Price: £47,480, £5,520 less than this car. Dealer: Auto100.Co.Uk in Sutton in Ashfield. AskCar page: https://askcar.co.uk/car/porsche-718-boxster-2018-46341cd35e58
• 2018 Porsche 718 Boxster GTS, 2.5 petrol convertible, blue. Mileage: 20,000 miles. Price: £51,480, £1,520 less than this car. Dealer: Auto100.Co.Uk in Sutton in Ashfield. AskCar page: https://askcar.co.uk/car/porsche-718-boxster-2018-5024e46e40d3

• The nearest: 2018 Porsche 718 Boxster GTS, 2.5 petrol convertible, black, 40 miles from this car. Mileage: 49,750 miles. Price: £39,995, £13,005 less than this car. Dealer: Invictus Porsche in Bishop's Stortford. AskCar page: https://askcar.co.uk/car/porsche-718-boxster-2018-cb2243ec8660