2018 Porsche 911 3.8 RS
Price: £485,000. Above the going rate: £70,961 (17%) over the AskCar estimate of £414,039, our expected asking price for this car from its model, age, mileage and specification, drawing on 1,967 priced Porsche 911 adverts on AskCar as of 6 November 2026.
AskCar lists 2,466 used Porsche 911 from 619 UK dealerships, as of 6 November 2026.
Overview
- Make: Porsche
- Model: 911
- Trim: RS
- Version: 3.8 GT2 RS PDK RWD Euro 6 2dr (690 bhp)
- Year: 2018
- Mileage: 5,856 miles
- Fuel: Petrol
- Body: Coupe, 2 doors, 2 seats
- Engine: 3.8 litres, 690 bhp
- Gearbox: Automatic (PDK)
- Drive: Rear-wheel drive
- Colour: Silver
- CO2: 269 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
This 2018 Porsche 911 has covered 5,856 miles, around 15,700 fewer miles than is typical for its age. The AskCar estimate for this car is £414,039. It is priced at £485,000, which is £70,961 above that estimate. The AskCar estimate uses 1,967 UK dealer adverts for the Porsche 911, with adjustments for age, mileage, trim, engine and other specifications. This car was first seen in our listings data 15 days ago. It is advertised by Romans International in Banstead. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 6 November 2026.
Price
Above the going rate: £70,961 (17%) over the AskCar estimate of £414,039.
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 1,967 priced Porsche 911 adverts across different ages and specifications, as of 6 November 2026.
A 2018 Porsche 911 with the 3.8 petrol engine is typically advertised at £460,000: the median of the 15 for sale on AskCar, as of 6 November 2026.
Time on sale
This 2018 Porsche 911 has been on sale for at least 15 days.
Price history
AskCar first saw this advert on 22 October 2026 at £485,000. Its asking price has not changed.
Mileage and MOT
Advertised mileage is about 15,700 miles lower than the median mileage of a 2018 Porsche 911 on AskCar.
Similar cars
5 other 2018 Porsche 911 RS 3.8 petrol automatic coupes are for sale at UK dealers, from £399,950 to £499,000, as of 6 November 2026.
The 3 closest to this car in mileage:
- 2018 Porsche 911 RS, 3.8 petrol coupe, silver. Mileage: 4,000 miles. Price: £459,950, £25,050 less than this car. Dealer: Tom Hartley in Swadlincote. AskCar page: https://askcar.co.uk/car/porsche-911-2018-8c2b81df4779
- 2018 Porsche 911 RS, 3.8 petrol coupe, yellow. Mileage: 3,976 miles. Price: £489,990, £4,990 more than this car. Dealer: Stratstone Porsche Centre Wilmslow in Wilmslow. AskCar page: https://askcar.co.uk/car/porsche-911-2018-4740ffc5c5bd
- 2018 Porsche 911 RS, 3.8 petrol coupe, orange. Mileage: 535 miles. Price: £499,000, £14,000 more than this car. Dealer: Jeremy Cottingham in London. AskCar page: https://askcar.co.uk/car/porsche-911-2018-1bbe8270fcc1
Browse all Porsche 911 cars for sale · 2018 Porsche 911 price guide
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Photos
63 photos of this car are on its AskCar page.
As of 6 November 2026, AskCar lists 598,752 cars and vans from 12,905 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.