2018 Porsche 718 Boxster 2.5 GTS

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: 49,750 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 2 seats
• Engine: 2.5 litres, 360 bhp
• Gearbox: Automatic (PDK)
• Drive: Rear-wheel drive
• Colour: Black
• CO2: 186 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Porsche 718 Boxster Gts has covered 49,750 miles, around 10,300 more miles than is typical for its age. Its asking price of £39,995 is £4,640 below the AskCar estimate of £44,635. The AskCar estimate draws on 190 Porsche 718 Boxster adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this car for sale 15 days ago. Its advertised mileage matches the government's MOT record. It is for sale at Invictus Porsche in Uttlesford. 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

Good value: £4,640 (10%) under the AskCar estimate of £44,635.

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 15 days.

Price history

AskCar first saw this advert on 21 October 2026 at £39,995. 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 16 December 2026.

It has had 5 MOTs. The latest, on 27 November 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 45,942 miles, which matches the advertised 49,750 miles.

Advertised mileage is about 10,300 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 £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, white. Mileage: 54,000 miles. Price: £43,950, £3,955 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, 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, black. Mileage: 44,000 miles. Price: £46,450, £6,455 more than this car. Dealer: Sagitta Automotive in Derby. AskCar page: https://askcar.co.uk/car/porsche-718-boxster-2018-63028eba526c

• The nearest: 2018 Porsche 718 Boxster GTS, 2.5 petrol convertible, red, 89 miles from this car. Mileage: 43,103 miles. Price: £51,995, £12,000 more than this car. Dealer: Dick Lovett Porsche Centre Swindon in Swindon. AskCar page: https://askcar.co.uk/car/porsche-718-boxster-2018-b00ad1211cdd