2015 Porsche 911 3.8 991 4S
Price: £59,199. Far below the going rate: £28,671 (32%) under the AskCar estimate of £87,870, our expected asking price for this car from its model, age, mileage and specification, drawing on 1,972 priced Porsche 911 adverts on AskCar as of 7 November 2026. Worth asking the dealer why.
AskCar lists 2,462 used Porsche 911 from 621 UK dealerships, as of 7 November 2026.
Overview
- Make: Porsche
- Model: 911
- Trim: 991 4S
- Version: 3.8 991 4S PDK 4WD Euro 6 (s/s) 2dr Targa (395 bhp)
- Year: 2015
- Mileage: 6,400 miles
- Fuel: Petrol
- Body: Convertible, 2 doors, 4 seats
- Engine: 3.8 litres, 395 bhp
- Gearbox: Automatic (PDK)
- Drive: Four-wheel drive
- Colour: Black
- CO2: 214 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
The advertised mileage for this 2015 Porsche 911 991 4S is 6,400 miles. This car is priced at £59,199, £28,671 below the AskCar estimate of £87,870. Such a large price gap is worth checking with the dealer. The AskCar estimate draws on 1,972 Porsche 911 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. It first appeared in our advert records 129 days ago. Ask the dealer why the advert shows fewer miles than the 74,264 recorded at the latest MOT. MOT records show an expiry date of 20 February 2027. The seller is Alliance Motors Uk, based in West Bromwich. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 7 November 2026.
Price
Far below the going rate: £28,671 (32%) under the AskCar estimate of £87,870. Worth asking the dealer why.
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 1,972 priced Porsche 911 adverts across different ages and specifications, as of 7 November 2026.
A 2015 Porsche 911 with the 3.8 petrol engine is typically advertised at £77,900: the median of the 39 for sale on AskCar, as of 7 November 2026.
Time on sale
This 2015 Porsche 911 has been on sale for at least 129 days.
Price history
AskCar first saw this advert on 1 July 2026 at £59,000. Its asking price is now £59,199, £199 more.
Price changes recorded:
- 1 July 2026: £59,000
- 25 September 2026: £59,199
Mileage and MOT
MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 7 November 2026: valid until 20 February 2027.
It has had 10 MOTs. The latest, on 28 January 2026, passed.
Advisories at the latest test: nearside rear tyre worn close to legal limit/worn on edge; offside rear tyre worn close to legal limit/worn on edge.
Mileage at that test: 74,264 miles. The advert says 6,400 miles, fewer than the MOT record, so ask the dealer which is right.
Advertised mileage is about 31,600 miles lower than the median mileage of a 2015 Porsche 911 on AskCar.
Similar cars
1 other 2015 Porsche 911 991 4S 3.8 petrol automatic convertible is for sale at UK dealers, as of 7 November 2026.
The closest to this car in mileage:
- 2015 Porsche 911 991 4S, 3.8 petrol convertible, white. Mileage: 46,038 miles. Price: £67,991, £8,792 more than this car. Dealer: Lakeside Classics in Shrewsbury. AskCar page: https://askcar.co.uk/car/porsche-911-2015-9c659d396471
Browse all Porsche 911 cars for sale · 2015 Porsche 911 price guide
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Photos
24 photos of this car are on its AskCar page.
As of 7 November 2026, AskCar lists 601,018 cars and vans from 12,892 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.