2018 Porsche 718 Boxster 2.5 GTS

Price: £39,995. Fair price: £2,850 (6%) under the AskCar estimate of £42,845, our expected asking price for this car from its model, age, mileage and specification, drawing on 189 priced Porsche 718 Boxster adverts on AskCar as of 2 November 2026.

AskCar lists 190 used Porsche 718 Boxster from 139 UK dealerships, as of 2 November 2026.

Overview

  • Make: Porsche
  • Model: 718 Boxster
  • Trim: GTS
  • Version: 2.5 T GTS PDK RWD Euro 6 (s/s) 2dr (360 bhp)
  • Year: 2018
  • Mileage: 55,864 miles
  • Fuel: Petrol
  • Body: Convertible, 2 doors, 2 seats
  • Engine: 2.5 litres, 360 bhp
  • Gearbox: Automatic (PDK)
  • Drive: Rear-wheel drive
  • Colour: Silver
  • CO2: 186 g/km
  • Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Porsche 718 Boxster Gts has covered 55,864 miles, around 14,300 more miles than is typical for its age. Its asking price of £39,995 is £2,850 below the AskCar estimate of £42,845. The AskCar estimate uses UK dealer asking prices, including 189 Porsche 718 Boxster adverts, and accounts for the car’s age, mileage and specification. This car was first seen in our listings data 158 days ago. The seller is The Drivers Gallery, based in Bromsgrove. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Fair price: £2,850 (6%) under the AskCar estimate of £42,845.

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 189 priced Porsche 718 Boxster adverts across different ages and specifications, as of 2 November 2026.

A 2018 Porsche 718 Boxster with the 2.5 petrol engine is typically advertised at £45,700: the median of the 12 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2018 Porsche 718 Boxster has been on sale for at least 158 days.

Price history

AskCar first saw this advert on 28 May 2026 at £39,995. Its asking price has not changed.

Mileage and MOT

Advertised mileage is about 14,300 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 £31,975 to £61,995, as of 2 November 2026.

The 3 closest to this car in mileage:

  • 2018 Porsche 718 Boxster GTS, 2.5 petrol convertible, blue. Mileage: 55,000 miles. Price: £49,500, £9,505 more than this car. Dealer: Sytner Group Porsche Centre Glasgow in Glasgow. AskCar page: https://askcar.co.uk/car/porsche-718-boxster-2018-0e5946fbde8c
  • 2018 Porsche 718 Boxster GTS, 2.5 petrol convertible, white. Mileage: 54,000 miles. Price: £41,950, £1,955 more 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, the same price as 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, white, 12 miles from this car. Mileage: 10,000 miles. Price: £31,975, £8,020 less than this car. Dealer: Sandwell Car Sales in West Bromwich. AskCar page: https://askcar.co.uk/car/porsche-718-boxster-2018-eb32f5efd9b4

Browse all Porsche 718 Boxster cars for sale · 2018 Porsche 718 Boxster price guide

More like this

Photos

44 photos of this car are on its AskCar page.

As of 2 November 2026, AskCar lists 586,270 cars and vans from 12,920 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.