2018 Porsche 911 4.0 991 GT3

Overview

• Make: Porsche
• Model: 911
• Trim: 991 GT3
• Version: 4.0 991 GT3 PDK RWD Euro 6 2dr (492 bhp)
• Year: 2018
• Mileage: 16,000 miles
• Fuel: Petrol
• Body: Coupe, 2 doors, 2 seats
• Engine: 4.0 litres, 492 bhp
• Gearbox: Automatic (PDK)
• Drive: Rear-wheel drive
• Colour: Red
• CO2: 288 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 16,000 miles on the clock, this 2018 Porsche 911 991 Gt3 has done roughly 4,700 fewer miles than a typical 2018 Porsche 911. Priced at £129,990, it is advertised £10,800 below the AskCar estimate of £140,790. The AskCar estimate uses UK dealer asking prices, including 1,947 Porsche 911 adverts, and accounts for the car’s age, mileage and specification. We have tracked this advert today. Its advertised mileage matches the government's MOT record. It is for sale at Hills Prestige in Lymington. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £10,800 (7%) under the AskCar estimate of £140,790.

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 1,947 priced Porsche 911 adverts across different ages and specifications, as of 4 November 2026.

A 2018 Porsche 911 with the 4.0 petrol engine is typically advertised at £136,000: the median of the 14 for sale on AskCar, as of 4 November 2026.

Time on sale

AskCar first saw this 2018 Porsche 911 advertised today. About 4 in 10 of 2018 Porsche 911 cars are gone from sale within a month of being advertised: 43 of the 110 first advertised between 12 July 2026 and 1 October 2026.

Price history

AskCar first saw this advert on 4 November 2026 at £129,990. 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 4 November 2026: valid until 27 October 2027.

It failed its MOT on 28 October 2026 (front registration plate does not conform to the specified requirements) and passed later the same day.

There were no advisories at the latest test.

Mileage at that test: 15,948 miles, which matches the advertised 16,000 miles.

Advertised mileage is about 4,700 miles lower than the median mileage of a 2018 Porsche 911 on AskCar.

Similar cars

4 other 2018 Porsche 911 991 GT3 4.0 petrol automatic coupes are for sale at UK dealers, from £134,949 to £145,000, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2018 Porsche 911 991 GT3, 4.0 petrol coupe, yellow. Mileage: 17,974 miles. Price: £145,000, £15,010 more than this car. Dealer: JCT600 Approved Leeds in Leeds. AskCar page: https://askcar.co.uk/car/porsche-911-2018-ccb6e0ae0506
• 2018 Porsche 911 991 GT3, 4.0 petrol coupe, blue. Mileage: 20,000 miles. Price: £134,949, £4,959 more than this car. Dealer: DMB Collection Thirsk in Thirsk. AskCar page: https://askcar.co.uk/car/porsche-911-2018-1198047cd941
• 2018 Porsche 911 991 GT3, 4.0 petrol coupe, grey. Mileage: 26,607 miles. Price: £134,990, £5,000 more than this car. Dealer: Baytree Cars in Derby. AskCar page: https://askcar.co.uk/car/porsche-911-2018-7cd52e00708d