2018 Audi A3 1.5 TFSI S Line
Version: 1.5 TFSI S Line S tronic FWD Euro 6 5dr (147 bhp)
Price: £13,990. Fair price: £573 (3%) under the AskCar estimate of £14,563, our expected asking price for this car from its model, age, mileage and specification, drawing on 6,600 priced Audi A3 adverts on AskCar as of 31 October 2026.
AskCar lists 6,729 used Audi A3 from 2,260 UK dealerships, as of 31 October 2026.
Overview
- Make
- Audi
- Model
- A3
- Trim
- S Line
- Version
- 1.5 TFSI S Line S tronic FWD Euro 6 5dr (147 bhp)
- Mileage
- 46,182 miles
- Year
- 2018
- Fuel type
- Petrol
- Body type
- Hatchback
- Engine
- 1.5 L
- Gearbox
- Automatic
- Power
- 147 bhp
- Seats
- 5
- CO2
- 114 g/km
- Colour
- Grey
- Doors
- 5
- Driven wheels
- Front Wheel Drive
- Gearbox version
- S tronic
- Engine badge
- TFSI
- Emissions standard
- Euro 6
About this car
This 2018 Audi A3 S Line has covered 46,182 miles, around 18,400 fewer miles than is typical for its age. The AskCar estimate for this car is £14,563. It is priced at £13,990, which is £573 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 6,600 Audi A3 cars across different ages and specifications. It first appeared in our advert records today. Its recorded MOT is valid until 29 April 2027, and its advertised mileage is consistent with the latest MOT reading. The seller is Swansway Garages Blackburn Audi, based in Blackburn,.
Stock data as of 31 October 2026.
Price history
AskCar first saw this advert on 31 October 2026.
| Date observed | Asking price |
|---|---|
| 31 October 2026 | £13,990 |
Price and mileage comparison
Fair price: £573 (3%) under the AskCar estimate of £14,563.
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 6,600 priced Audi A3 adverts across different ages and specifications, as of 31 October 2026.
Advertised mileage is about 18,400 miles lower than the median mileage of a 2018 Audi A3 on AskCar.
The advertised mileage is consistent with the last MOT reading.
MOT
MOT: valid until 29 April 2027. 45,173 miles at the last test.
Other matching cars
35 other 2018 Audi A3 S Line automatic petrol cars are for sale at UK dealers from £9,250 to £17,690, as of 31 October 2026.
The 5 cheapest:
- 2018 Audi A3. Price: £9,250. Mileage: 103,000 miles. Dealer: Breckland Vehicle Specialists in Brandon. AskCar page: https://askcar.co.uk/car/audi-a3-2018-7fe252d905ac
- 2018 Audi A3. Price: £9,695. Mileage: 101,514 miles. Dealer: The Drivers Gallery in Bromsgrove. AskCar page: https://askcar.co.uk/car/audi-a3-2018-6995612ff966
- 2018 Audi A3. Price: £10,390. Mileage: 97,862 miles. Dealer: NSN Motors in Buntingford. AskCar page: https://askcar.co.uk/car/audi-a3-2018-5c71515de6c5
- 2018 Audi A3. Price: £10,395. Mileage: 33,589 miles. Dealer: Top Gear Harrow in Harrow. AskCar page: https://askcar.co.uk/car/audi-a3-2018-a5711716c088
- 2018 Audi A3. Price: £10,595. Mileage: 95,637 miles. Dealer: Hitchin Autohaus in Hitchin. AskCar page: https://askcar.co.uk/car/audi-a3-2018-46c9f18d92d6
Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. The AskCar estimate adjusts for these differences.
Browse all Audi A3 cars for sale · 2018 Audi A3 price guide
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How to contact the dealer and its opening hours are on this AskCar page.
As of 31 October 2026, AskCar lists 583,548 cars and vans from 12,716 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.