2021 Audi A3

1.5 TFSI 35 S Line S tronic FWD Euro 6 (s/s) 5dr Sportback (148 bhp)

£17,154

Fair price: within 8% of the typical £17,924 for this model, age and mileage, drawing on 6,484 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
46,087 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
Red
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 has covered 46,087 miles, around 3,300 more than typical for its age. Our estimated market asking price is £17,924. This car is advertised at £17,154, which is £770 below that figure. We use UK dealer asking prices, including 6,484 Audi A3 listings, and account for the car’s age, mileage and specification. Since we first spotted the advert 45 days ago, the asking price has dropped by £885. Its recorded MOT is valid until 17 July 2027, and its advertised mileage is consistent with the latest MOT reading. It is advertised by Carsa Cannock in Cannock Chase.

Stock data from 19 October 2026.

How we estimate prices and check cars

Price history

First seen on 5 September 2026, 45 days ago. Advert duration calculated on 20 October 2026. Net asking-price reduction: £885 from the first recorded £18,039. 18 price reductions recorded, the latest observed on 16 October 2026.

Recorded asking prices
Date observedAsking price
5 September 2026£18,039
6 September 2026£18,036
8 September 2026£17,894
10 September 2026£17,875
11 September 2026£17,993
12 September 2026£17,986
13 September 2026£17,970
14 September 2026£17,962
15 September 2026£17,963
16 September 2026£17,947
17 September 2026£17,764
18 September 2026£17,737
19 September 2026£17,742
20 September 2026£17,725
21 September 2026£17,717
22 September 2026£17,710
27 September 2026£17,831
29 September 2026£17,594
3 October 2026£17,502
6 October 2026£17,346
9 October 2026£17,253
12 October 2026£17,191
16 October 2026£17,154
19 October 2026£17,154

Price and mileage comparison

Estimated market asking price: £17,924. The asking price is £770 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 6,484 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 3,300 miles higher than typical for a 2021 Audi A3.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 17 July 2027. 45,283 miles at the last test.

97 other cars with the same year, trim, gearbox and fuel are for sale from £11,995 to £21,995.

Other matching cars (up to five, cheapest first)
Asking priceMileage
£11,995120,530 miles
£12,490111,668 miles
£12,99957,000 miles
£13,490108,000 miles
£13,70096,353 miles

These cars have covered 12,650–120,530 miles, compared with 46,087 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

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Dealer

Carsa Cannock, Cannock Chase. Across the dealer network: 11 branches, 2,824 cars for sale.

Dealer postcode: WS11 8XR.

Dealer opening hours

Monday
07:00-22:00
Tuesday
07:00-22:00
Wednesday
07:00-22:00
Thursday
07:00-22:00
Friday
07:00-22:00
Saturday
07:00-22:00
Sunday
07:00-22:00

Vehicle photos