2021 Audi A3
1.5 TFSI 35 S Line S tronic FWD Euro 6 (s/s) 5dr Sportback (148 bhp)
£17,990
Fair price: within 8% of the typical £19,059 for this model, age and mileage, drawing on 6,532 adverts of this make and model.
Overview
- Make
- Audi
- Model
- A3
- Trim
- S LINE
- Version
- 1.5 TFSI 35 S Line S tronic FWD Euro 6 (s/s) 5dr Sportback (148 bhp)
- Mileage
- 34,300 miles
- Year
- 2021
- Fuel type
- Petrol Hybrid
- Body type
- Hatchback
- Engine
- 1.5 L
- Gearbox
- Automatic
- Power
- 148 bhp
- Seats
- 5
- CO2
- 135 g/km
- Colour
- Blue
- Doors
- 5
- Driven wheels
- Front Wheel Drive
- Gearbox version
- S tronic
- Engine badge
- TFSI
- Hybrid type
- Mild hybrid
- Emissions standard
- Euro 6
About this car
This 2021 Audi A3 S Line is advertised with 34,300 miles, approximately 8,700 below the typical mileage for its age. The dealer is asking £17,990, which is £1,069 below our market estimate of £19,059. To estimate its market asking price, we analyse UK dealer adverts for 6,532 Audi A3 cars across different ages and specifications. It first appeared in our advert records 20 days ago. MOT records show an expiry date of 12 April 2027, and the latest recorded mileage is consistent with the advert. The seller is BSB Automotive, based in Dartford.
Stock data from 20 October 2026.
Price history
First seen on 1 October 2026, 20 days ago. Advert duration calculated on 21 October 2026.
| Date observed | Asking price |
|---|---|
| 1 October 2026 | £17,990 |
| 20 October 2026 | £17,990 |
Price and mileage comparison
Estimated market asking price: £19,059. The asking price is £1,069 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 6,532 adverts of this make and model across different ages and specifications.
Advertised mileage is approximately 8,700 miles lower than typical for a 2021 Audi A3.
The advertised mileage is consistent with the last MOT reading.
MOT
MOT valid until 12 April 2027. 31,534 miles at the last test.
98 other cars with the same year, trim, gearbox and fuel are for sale from £11,995 to £21,995.
| Asking price | Mileage |
|---|---|
| £11,995 | 120,530 miles |
| £12,490 | 111,668 miles |
| £12,995 | 108,000 miles |
| £12,999 | 57,000 miles |
| £13,290 | 108,000 miles |
These cars have covered 11,900–120,530 miles, compared with 34,300 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 A3 cars for sale · 2021 Audi A3 price guide
Similar cars for less
- 2024 Audi A3, 26,200 miles, £14,489, £4,455 under typical, Bradford
- 2023 Audi A3, 7,500 miles, £16,989, £5,148 under typical, Keighley
- 2024 Audi A3, 14,730 miles, £15,499, £4,471 under typical, Halifax
Dealer
BSB Automotive, Dartford. Across the dealer network: 72 cars for sale.
Dealer postcode: DA2 7RB.
Dealer opening hours
- Monday
- 09:45-19:00
- Tuesday
- 09:45-19:00
- Wednesday
- 09:45-19:00
- Thursday
- 09:45-19:00
- Friday
- 09:45-19:00
- Saturday
- 09:45-19:00
- Sunday
- 11:30-16:00