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: 55,000 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 2 seats
• Engine: 2.5 litres, 359 bhp
• Gearbox: Automatic (PDK)
• Drive: Rear-wheel drive
• Colour: Blue
• CO2: 210 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Porsche 718 Boxster Gts is advertised with 55,000 miles, approximately 15,600 above the typical mileage for its age. Its asking price of £49,500 is £3,618 above the AskCar estimate of £45,882. The AskCar estimate draws on 190 Porsche 718 Boxster adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We have tracked this advert for 7 days. Its advertised mileage matches the government's MOT record. You can find this car at Sytner Group Porsche Centre Glasgow in Renfrew. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Fair price: £3,618 (7%) over the AskCar estimate of £45,882.

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 190 priced Porsche 718 Boxster adverts across different ages and specifications, as of 5 November 2026.

A 2018 Porsche 718 Boxster with the 2.5 petrol engine is typically advertised at £46,400: the median of the 11 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2018 Porsche 718 Boxster has been on sale for at least 7 days.

Price history

AskCar first saw this advert on 29 October 2026 at £49,500. 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 5 November 2026: valid until 28 February 2027.

It has had 6 MOTs. The latest, on 18 February 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 53,895 miles, which matches the advertised 55,000 miles.

Advertised mileage is about 15,600 miles higher than the median mileage of a 2018 Porsche 718 Boxster on AskCar.

Similar cars

9 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 5 November 2026.

The 3 closest to this car in mileage:

• 2018 Porsche 718 Boxster GTS, 2.5 petrol convertible, silver. Mileage: 55,864 miles. Price: £39,995, £9,505 less than this car. Dealer: The Drivers Gallery in Bromsgrove. AskCar page: https://askcar.co.uk/car/porsche-718-boxster-2018-e17080882265
• 2018 Porsche 718 Boxster GTS, 2.5 petrol convertible, white. Mileage: 54,000 miles. Price: £43,950, £5,550 less than this car. Dealer: Sutton Car Sales in Sutton Coldfield. AskCar page: https://askcar.co.uk/car/porsche-718-boxster-2018-92e0fa1d5147
• 2018 Porsche 718 Boxster GTS, 2.5 petrol convertible, black. Mileage: 49,750 miles. Price: £39,995, £9,505 less than this car. Dealer: Invictus Porsche in Bishop's Stortford. AskCar page: https://askcar.co.uk/car/porsche-718-boxster-2018-cb2243ec8660

• The nearest: 2018 Porsche 718 Boxster GTS, 2.5 petrol convertible, red, 160 miles from this car. Mileage: 29,300 miles. Price: £55,990, £6,490 more than this car. Dealer: Bowker Motor Group in Preston. AskCar page: https://askcar.co.uk/car/porsche-718-boxster-2018-3c8c278e9db6