2020 Audi A3 2.0 TDI S Line
Version: 2.0 TDI 35 S Line S tronic FWD Euro 6 (s/s) 4dr (148 bhp)
Price: £17,480. Fair price: £809 (4%) under the AskCar estimate of £18,289, 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
- 2.0 TDI 35 S Line S tronic FWD Euro 6 (s/s) 4dr (148 bhp)
- Mileage
- 36,546 miles
- Year
- 2020
- Fuel type
- Diesel
- Body type
- Saloon
- Engine
- 2.0 L
- Gearbox
- Automatic
- Power
- 148 bhp
- Seats
- 5
- CO2
- 124 g/km
- Colour
- Grey
- Doors
- 4
- 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 is advertised with 36,546 miles, approximately 13,700 below the typical mileage for its age. The dealer is asking £17,480, which is £809 below the AskCar estimate of £18,289. 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. MOT records show an expiry date of 29 September 2027, and the latest recorded mileage is consistent with the advert. You can find this car at Leigh Cars in Southend-on-SEA.
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 | £17,480 |
Price and mileage comparison
Fair price: £809 (4%) under the AskCar estimate of £18,289.
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 13,700 miles lower 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 29 September 2027. 36,188 miles at the last test.
Other matching cars
18 other 2020 Audi A3 S Line automatic diesel cars are for sale at UK dealers from £10,995 to £19,770, as of 31 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: £13,795. Mileage: 86,000 miles. Dealer: Dream Motor Specialist in Manchester. AskCar page: https://askcar.co.uk/car/audi-a3-2020-815d51fb7483
- 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
The 18 matching cars have covered 11,648 to 107,000 miles, compared with 36,546 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
11 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 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.