2020 Audi A3 2.0 TDI S Line
Version: 2.0 TDI S Line S tronic FWD Euro 6 5dr
Price: £16,325. Fair price: £985 (5%) under the AskCar estimate of £17,310, our expected asking price for this car from its model, age, mileage and specification, drawing on 6,475 priced Audi A3 adverts on AskCar as of 30 October 2026.
AskCar lists 6,654 used Audi A3 from 2,240 UK dealerships, as of 30 October 2026.
Overview
- Make
- Audi
- Model
- A3
- Trim
- S Line
- Version
- 2.0 TDI S Line S tronic FWD Euro 6 5dr
- Mileage
- 55,645 miles
- Year
- 2020
- Fuel type
- Diesel
- Body type
- Hatchback
- Engine
- 2.0 L
- Gearbox
- Automatic
- Seats
- 5
- CO2
- 127 g/km
- Colour
- Black
- Doors
- 5
- Driven wheels
- Front Wheel Drive
- Gearbox version
- S tronic
- Engine badge
- TDI
- Emissions standard
- Euro 6
About this car
This 2020 Audi A3 S Line has covered 55,645 miles, around 5,300 more miles than is typical for its age. Priced at £16,325, it is advertised £985 below the AskCar estimate of £17,310. The AskCar estimate uses 6,475 UK dealer adverts for the Audi A3, with adjustments for age, mileage, trim, engine and other specifications. We have tracked this advert today. Its MOT is recorded as valid until 7 July 2027. The advertised mileage is consistent with the latest MOT reading. You can find this car at One 2 One Autos in Windsor.
Stock data as of 30 October 2026.
Price history
AskCar first saw this advert on 30 October 2026.
| Date observed | Asking price |
|---|---|
| 30 October 2026 | £16,325 |
Price and mileage comparison
Fair price: £985 (5%) under the AskCar estimate of £17,310.
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 6,475 priced Audi A3 adverts across different ages and specifications, as of 30 October 2026.
Advertised mileage is about 5,300 miles higher than the median mileage of a 2020 Audi A3 on AskCar.
The advertised mileage is consistent with the last MOT reading.
MOT
MOT: valid until 7 July 2027. 52,726 miles at the last test.
Other matching cars
16 other 2020 Audi A3 S Line automatic diesel cars are for sale at UK dealers from £10,995 to £19,770, as of 30 October 2026.
The 5 cheapest:
- 2020 Audi A3. Price: £10,995. Mileage: 107,000 miles. Dealer: Novadrive in Batley. AskCar page: https://askcar.co.uk/car/audi-a3-2020-2459e6fd2001
- 2020 Audi A3. Price: £14,300. Mileage: 88,430 miles. Dealer: R 8 Motor Group in Milton Keynes. AskCar page: https://askcar.co.uk/car/audi-a3-2020-17b66140c527
- 2020 Audi A3. Price: £14,300. Mileage: 88,430 miles. Dealer: Moto Porium in Bradford. AskCar page: https://askcar.co.uk/car/audi-a3-2020-28a76204192a
- 2020 Audi A3. Price: £14,399. Mileage: 78,000 miles. Dealer: Rangebrook in Nuneaton. AskCar page: https://askcar.co.uk/car/audi-a3-2020-83336ecf9e59
- 2020 Audi A3. Price: £14,490. Mileage: 96,706 miles. Dealer: Www.Countrycarsales.Co.Uk in Welwyn Garden City. AskCar page: https://askcar.co.uk/car/audi-a3-2020-0da304c2791b
The 16 matching cars have covered 11,648 to 107,000 miles, compared with 55,645 miles for this car.
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 · 2020 Audi A3 price guide
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Photos
68 photos of this car are on its AskCar page.
How to contact the dealer and its opening hours are on this AskCar page.
As of 30 October 2026, AskCar lists 580,490 cars and vans from 12,695 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.