2017 Porsche 718 Boxster 2.5 S

Overview

• Make: Porsche
• Model: 718 Boxster
• Trim: S
• Version: 2.5 T S PDK RWD Euro 6 (s/s) 2dr (345 bhp)
• Year: 2017
• Mileage: 28,987 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 2 seats
• Engine: 2.5 litres, 345 bhp
• Gearbox: Automatic (PDK)
• Drive: Rear-wheel drive
• Colour: White
• CO2: 167 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 28,987 miles, this 2017 Porsche 718 Boxster has covered about 3,200 fewer miles than other 2017 Porsche 718 Boxster cars. Priced at £40,666, it is advertised £1,929 below the AskCar estimate of £42,595. The AskCar estimate uses UK dealer asking prices, including 198 Porsche 718 Boxster adverts, and accounts for the car’s age, mileage and specification. We first recorded this advert 31 days ago, and its asking price has since fallen by £2,329. Its advertised mileage matches the government's MOT record. It is for sale at Lawton Brook in Knaresborough. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,929 (4%) under the AskCar estimate of £42,595.

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 198 priced Porsche 718 Boxster adverts across different ages and specifications, as of 6 November 2026.

A 2017 Porsche 718 Boxster with the 2.5 petrol engine is typically advertised at £39,000: the median of the 11 for sale on AskCar, as of 6 November 2026.

Time on sale

This 2017 Porsche 718 Boxster has been on sale for at least 31 days.

Price history

AskCar first saw this advert on 6 October 2026 at £42,995. Its asking price is now £40,666, £2,329 less. The latest price cut was seen on 5 November 2026.

Price changes recorded:

• 6 October 2026: £42,995
• 20 October 2026: £41,995
• 23 October 2026: £41,888
• 24 October 2026: £41,480
• 29 October 2026: £41,222
• 3 November 2026: £40,888
• 5 November 2026: £40,666

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 14 May 2027.

It has had 7 MOTs. The latest, on 15 May 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 25,272 miles, which matches the advertised 28,987 miles.

Advertised mileage is about 3,200 miles lower than the median mileage of a 2017 Porsche 718 Boxster on AskCar.

Similar cars

5 other 2017 Porsche 718 Boxster S 2.5 petrol automatic convertibles are for sale at UK dealers, from £35,570 to £46,950, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2017 Porsche 718 Boxster S, 2.5 petrol convertible, blue. Mileage: 30,000 miles. Price: £41,490, £824 more than this car. Dealer: Smiths Sports and Performance in Melton Mowbray. AskCar page: https://askcar.co.uk/car/porsche-718-boxster-2017-1b4a082fd94d
• 2017 Porsche 718 Boxster S, 2.5 petrol convertible, black. Mileage: 24,388 miles. Price: £46,950, £6,284 more than this car. Dealer: Group 1 Automotive Porsche Centre Bournemouth in Bournemouth. AskCar page: https://askcar.co.uk/car/porsche-718-boxster-2017-8f38d917dd7c
• 2017 Porsche 718 Boxster S, 2.5 petrol convertible, red. Mileage: 40,768 miles. Price: £38,490, £2,176 less than this car. Dealer: Auto Manor in Lasham. AskCar page: https://askcar.co.uk/car/porsche-718-boxster-2017-67de5d135a57