2018 Audi A8

3.0 50 TDI S Line Tiptronic 4WD Euro 6 4dr (282 bhp)

£16,950

Fair price: within 8% of the typical £17,555 for this model, age and mileage, drawing on 213 adverts of this make and model.

Overview

Make
Audi
Model
A8
Trim
S LINE
Version
3.0 50 TDI S Line Tiptronic 4WD Euro 6 4dr (282 bhp)
Mileage
99,000 miles
Year
2018
Fuel type
Diesel
Body type
Saloon
Engine
3.0 L
Gearbox
Automatic
Power
282 bhp
Seats
5
CO2
156 g/km
Colour
Grey
Doors
4
Driven wheels
Four Wheel Drive
Gearbox version
Tiptronic
Emissions standard
Euro 6

About this car

This 2018 Audi A8 S Line has covered 99,000 miles, around 42,900 more than typical for its age. The dealer is asking £16,950, which is £605 below our market estimate of £17,555. We use UK dealer asking prices, including 213 Audi A8 listings, and account for the car’s age, mileage and specification. Since we first spotted the advert 146 days ago, the asking price has dropped by £2,400. The recorded MOT expired on 24 June 2026, so ask the dealer whether it has been renewed. Our comparison with the latest MOT reading has not flagged a mileage discrepancy. The seller is Car Firm Peterborough, based in Peterborough.

Stock data from 19 October 2026.

How we estimate prices and check cars

Price history

First seen on 28 May 2026, 146 days ago. Advert duration calculated on 21 October 2026. Net asking-price reduction: £2,400 from the first recorded £19,350. 2 price reductions recorded, the latest observed on 6 October 2026.

Recorded asking prices
Date observedAsking price
28 May 2026£19,350
10 July 2026£18,350
28 September 2026£17,500
6 October 2026£16,950
19 October 2026£16,950

Price and mileage comparison

Estimated market asking price: £17,555. The asking price is £605 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 213 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 42,900 miles higher than typical for a 2018 Audi A8.

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 24 June 2026. 85,096 miles at the last test.

4 other cars with the same year, trim, gearbox and fuel are for sale from £17,295 to £24,498.

Other matching cars
Asking priceMileage
£17,29598,336 miles
£18,99889,510 miles
£22,99556,122 miles
£24,49852,911 miles

These cars have covered 52,911–98,336 miles, compared with 99,000 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 Audi A8 cars for sale · 2018 Audi A8 price guide

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Dealer

Car Firm Peterborough, Peterborough. Across the dealer network: 90 cars for sale.

Dealer postcode: PE8 6HG.

Dealer opening hours

Monday
09:00-18:00
Tuesday
09:00-18:00
Wednesday
09:00-18:00
Thursday
09:00-18:00
Friday
09:00-18:00
Saturday
09:00-18:00
Sunday
09:00-18:00

Vehicle photos