2018 Porsche 911 3.0 991 Carrera GTS

Overview

• Make: Porsche
• Model: 911
• Trim: 991 Carrera GTS
• Version: 3.0 T 991 Carrera GTS PDK RWD Euro 6 (s/s) 2dr (444 bhp)
• Year: 2018
• Mileage: 21,765 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 4 seats
• Engine: 3.0 litres, 444 bhp
• Gearbox: Automatic (PDK)
• Drive: Rear-wheel drive
• Colour: White
• CO2: 190 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Porsche 911 991 Carrera Gts is advertised with 21,765 miles on the clock. Its asking price of £78,777 is £7,839 below the AskCar estimate of £86,616. The AskCar estimate uses UK dealer asking prices, including 1,962 Porsche 911 adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 75 days ago. Its asking price has since fallen by £2,218. We checked its advertised mileage against the government's MOT record, and they match. You can find this car at Lawton Brook in Knaresborough. 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: £7,839 (9%) under the AskCar estimate of £86,616.

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 1,962 priced Porsche 911 adverts across different ages and specifications, as of 5 November 2026.

A 2018 Porsche 911 with the 3.0 petrol engine is typically advertised at £79,000: the median of the 42 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2018 Porsche 911 has been on sale for at least 75 days.

Price history

AskCar first saw this advert on 22 August 2026 at £80,995. Its asking price is now £78,777, £2,218 less. The latest price cut was seen on 5 November 2026.

Price changes recorded:

• 15 September 2026: £80,995
• 21 September 2026: £80,495
• 29 September 2026: £79,995
• 6 October 2026: £78,995
• 20 October 2026: £77,995
• 29 October 2026: £77,888
• 4 November 2026: £78,991
• 5 November 2026: £78,777

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 15 July 2027.

It has had 7 MOTs. The latest, on 16 July 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 20,241 miles, which matches the advertised 21,765 miles.

Advertised mileage is about 1,100 miles higher than the median mileage of a 2018 Porsche 911 on AskCar.

Similar cars

2 other 2018 Porsche 911 991 Carrera GTS 3.0 petrol automatic convertibles are for sale at UK dealers, from £81,990 to £83,995, as of 5 November 2026.

The 2 closest to this car in mileage:

• 2018 Porsche 911 991 Carrera GTS, 3.0 petrol convertible, orange. Mileage: 21,519 miles. Price: £83,995, £5,218 more than this car. Dealer: JCT600 Porsche Centre Newcastle in Tynemouth. AskCar page: https://askcar.co.uk/car/porsche-911-2018-4330e3bac5ba
• 2018 Porsche 911 991 Carrera GTS, 3.0 petrol convertible, grey. Mileage: 32,000 miles. Price: £81,990, £3,213 more than this car. Dealer: Vvs Uk in Cranbrook. AskCar page: https://askcar.co.uk/car/porsche-911-2018-644d9d50d267