2018 Porsche 911

3.0 T 991 4S PDK 4WD Euro 6 (s/s) 2dr Targa (414 bhp)

£84,995

Fair price: within 8% of the typical £90,648 for this model, age and mileage, drawing on 1,951 adverts of this make and model.

Overview

Make: Porsche
Model: 911
Trim: 991 4S
Version: 3.0 T 991 4S PDK 4WD Euro 6 (s/s) 2dr Targa (414 bhp)
Mileage: 16,131 miles
Year: 2018
Fuel type: Petrol
Body type: Convertible
Engine: 3.0 L
Gearbox: Automatic
Power: 414 bhp
Seats: 4
CO2: 184 g/km
Colour: White
Doors: 2
Driven wheels: Four Wheel Drive
Gearbox version: PDK
Engine badge: 991 4S
Emissions standard: Euro 6

About this car

With 16,131 miles on the clock, this 2018 Porsche 911 991 4S has done roughly 4,400 fewer miles than a typical 2018 Porsche 911. Its asking price of £84,995 is £5,653 below our estimate of £90,648. Our estimate draws on 1,951 Porsche 911 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We have tracked this advert for 104 days. Our latest MOT record expired on 6 October 2026. Check the current position with the dealer. The latest recorded MOT mileage is consistent with the advertised figure. You can find this car at 911 Box in Keston.

Stock data from 19 October 2026.

How we estimate prices and check cars

Price history

First seen on 8 July 2026, 104 days ago. Advert duration calculated on 20 October 2026.

Recorded asking prices
Date observed	Asking price
8 July 2026	£84,995
9 July 2026	£84,995
19 October 2026	£84,995

Price and mileage comparison

Estimated market asking price: £90,648. The asking price is £5,653 below this estimate.

The estimate uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It estimates an advertised price, not a confirmed sale price.

The pricing calculation includes 1,951 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 4,400 miles lower than typical for a 2018 Porsche 911.

The advertised mileage is consistent with the last MOT reading.

The recorded MOT has expired; ask the dealer for an up-to-date MOT.

MOT

MOT valid until 6 October 2026. 15,545 miles at the last test.

6 other cars with the same year, trim, gearbox and fuel are for sale from £70,000 to £88,850.

Other matching cars (up to five, cheapest first)
Asking price	Mileage
£70,000	59,000 miles
£78,980	35,000 miles
£79,990	29,993 miles
£81,495	36,421 miles
£84,890	27,099 miles

These cars have covered 20,559–59,000 miles, compared with 16,131 miles for this car.

Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. Our estimate adjusts for these differences using the wider market data.

Browse all Porsche 911 cars for sale · 2018 Porsche 911 price guide

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Dealer

911 Box, Keston. Across the dealer network: 13 cars for sale.

Dealer postcode: BR2 6BP.