2018 Audi A3 1.5 TFSI CoD S Line
Price: £14,990. Fair price: £456 (2%) under the AskCar estimate of £15,446, our expected asking price for this car from its model, age, mileage and specification, drawing on 6,729 priced Audi A3 adverts on AskCar as of 6 November 2026.
AskCar lists 6,900 used Audi A3 from 2,320 UK dealerships, as of 6 November 2026.
Overview
- Make: Audi
- Model: A3
- Trim: S Line
- Version: 1.5 TFSI CoD 35 S Line S tronic FWD Euro 6 (s/s) 5dr Sportback (148 bhp)
- Year: 2018
- Mileage: 29,000 miles
- Fuel: Petrol
- Body: Hatchback, 5 doors, 5 seats
- Engine: 1.5 litres, 148 bhp
- Gearbox: Automatic (S tronic)
- Drive: Front-wheel drive
- Colour: Black
- CO2: 117 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
With 29,000 miles on the clock, this 2018 Audi A3 S Line has done roughly 35,700 fewer miles than a typical 2018 Audi A3. The AskCar estimate for this car is £15,446. It is priced at £14,990, which is £456 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 6,729 Audi A3 cars across different ages and specifications. It first appeared in our advert records 1 day ago. The seller is Mondial Cars, based in Northwood. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 6 November 2026.
Price
Fair price: £456 (2%) under the AskCar estimate of £15,446.
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 6,729 priced Audi A3 adverts across different ages and specifications, as of 6 November 2026.
A 2018 Audi A3 with the 1.5 petrol engine is typically advertised at £12,200: the median of the 150 for sale on AskCar, as of 6 November 2026.
Time on sale
AskCar first saw this 2018 Audi A3 advertised 1 day ago. About half of 2018 Audi A3 cars are gone from sale within a month of being advertised: 248 of the 498 first advertised between 10 July 2026 and 3 October 2026.
Price history
AskCar first saw this advert on 5 November 2026 at £14,990. Its asking price has not changed.
Mileage and MOT
Advertised mileage is about 35,700 miles lower than the median mileage of a 2018 Audi A3 on AskCar.
Similar cars
20 other 2018 Audi A3 S Line 1.5 petrol automatic hatchbacks are for sale at UK dealers, from £9,695 to £15,995, as of 6 November 2026.
The 3 closest to this car in mileage:
- 2018 Audi A3 S Line, 1.5 petrol hatchback, blue. Mileage: 31,603 miles. Price: £15,550, £560 more than this car. Dealer: Stratstone Amersham Audi in Amersham. AskCar page: https://askcar.co.uk/car/audi-a3-2018-91b5052f6576
- 2018 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 32,600 miles. Price: £15,985, £995 more than this car. Dealer: Michael Birks Specialist Cars in Sheffield. AskCar page: https://askcar.co.uk/car/audi-a3-2018-36264a2ac2d0
- 2018 Audi A3 S Line, 1.5 petrol hatchback, white. Mileage: 34,079 miles. Price: £15,995, £1,005 more than this car. Dealer: Jones Motor Company in Chester. AskCar page: https://askcar.co.uk/car/audi-a3-2018-3c33716dc7d4
Browse all Audi A3 cars for sale · 2018 Audi A3 price guide
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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.