2018 Audi S5

3.0 TFSI V6 Tiptronic 4WD Euro 6 (s/s) 2dr (349 bhp)

£16,990

Fair price: within 8% of the typical £17,111 for this model, age and mileage, drawing on 344 adverts of this make and model.

Overview

Make
Audi
Model
S5
Version
3.0 TFSI V6 Tiptronic 4WD Euro 6 (s/s) 2dr (349 bhp)
Mileage
94,355 miles
Year
2018
Fuel type
Petrol
Body type
Coupe
Engine
3.0 L
Gearbox
Automatic
Power
349 bhp
Seats
4
CO2
170 g/km
Colour
Black
Doors
2
Driven wheels
Four Wheel Drive
Gearbox version
Tiptronic
Engine badge
TFSI V6
Emissions standard
Euro 6

About this car

This 2018 Audi S5 has covered 94,355 miles, around 28,200 more than typical for its age. At £16,990, it is advertised £121 below our estimated market asking price of £17,111. To estimate its market asking price, we analyse UK dealer adverts for 344 Audi S5 cars across different ages and specifications. We have tracked this advert for 61 days. Its MOT is recorded as valid until 16 July 2027. The advertised mileage is consistent with the latest MOT reading. It is for sale at Xenon Automotive in Welwyn Garden City.

Stock data from 20 October 2026.

How we estimate prices and check cars

Price history

First seen on 21 August 2026, 61 days ago. Advert duration calculated on 21 October 2026.

Recorded asking prices
Date observedAsking price
21 August 2026£16,990
20 October 2026£16,990

Price and mileage comparison

Estimated market asking price: £17,111. The asking price is £121 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 344 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 28,200 miles higher than typical for a 2018 Audi S5.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 16 July 2027. 94,238 miles at the last test.

57 other cars with the same year, trim, gearbox and fuel are for sale from £14,990 to £25,990.

Other matching cars (up to five, cheapest first)
Asking priceMileage
£14,990101,358 miles
£15,600104,147 miles
£15,750107,000 miles
£15,800102,000 miles
£16,00060,000 miles

These cars have covered 31,337–107,000 miles, compared with 94,355 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 S5 cars for sale · 2018 Audi S5 price guide

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Dealer

Xenon Automotive, Welwyn Garden City. Across the dealer network: 69 cars for sale.

Dealer postcode: AL7 1AD.

Dealer opening hours

Monday
10:00-19:00
Tuesday
10:00-19:00
Wednesday
10:00-19:00
Thursday
10:00-19:00
Friday
10:00-19:00
Saturday
10:00-19:00
Sunday
12:00-16:00

Vehicle photos