2021 Audi A3

2.0 TDI 35 S Line S tronic FWD Euro 6 (s/s) 4dr (148 bhp)

£15,650

Fair price: within 8% of the typical £16,694 for this model, age and mileage, drawing on 6,542 adverts of this make and model.

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
63,113 miles
Year
2021
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 2021 Audi A3 S Line has covered 63,113 miles. Our estimated market asking price is £16,694. This car is advertised at £15,650, which is £1,044 below that figure. The estimate uses 6,542 UK dealer adverts for the Audi A3, with adjustments for age, mileage, trim, engine and other specifications. Since we first spotted the advert 147 days ago, the asking price has dropped by £1,625. Ask the dealer why the advert shows fewer miles than the 65,349 recorded at the latest MOT. MOT records show an expiry date of 18 May 2027. The seller is Stoneacre Peterborough (Newark Rd), based in Peterborough.

Stock data from 21 October 2026.

How we estimate prices and check cars

Price history

First seen on 28 May 2026, 147 days ago. Advert duration calculated on 22 October 2026. Net asking-price reduction: £1,625 from the first recorded £17,275. 9 price reductions recorded, the latest observed on 19 October 2026.

Recorded asking prices
Date observedAsking price
28 May 2026£17,275
6 June 2026£16,999
17 June 2026£16,799
1 July 2026£16,717
9 July 2026£16,599
11 July 2026£16,599
22 July 2026£16,299
23 July 2026£16,299
30 July 2026£15,999
2 September 2026£15,717
21 September 2026£15,903
4 October 2026£15,500
5 October 2026£15,825
19 October 2026£15,650
21 October 2026£15,650

Price and mileage comparison

Estimated market asking price: £16,694. The asking price is £1,044 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 6,542 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 20,100 miles higher than typical for a 2021 Audi A3.

Mileage concern: the advertised mileage is below the last MOT reading; ask the dealer to explain.

MOT

MOT valid until 18 May 2027. 65,349 miles at the last test.

8 other cars with the same year, trim, gearbox and fuel are for sale from £15,950 to £18,500.

Other matching cars (up to five, cheapest first)
Asking priceMileage
£15,95093,000 miles
£16,49571,923 miles
£16,80050,311 miles
£17,40045,833 miles
£17,99044,495 miles

These cars have covered 25,000–93,000 miles, compared with 63,113 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

Stoneacre Peterborough (Newark Rd), Peterborough. Across the dealer network: 54 branches, 2,534 cars for sale.

Dealer postcode: PE1 5HE.

Dealer opening hours

Monday
08:30-18:00
Tuesday
08:30-18:00
Wednesday
08:30-18:00
Thursday
08:30-18:00
Friday
08:30-18:00
Saturday
08:30-17:00
Sunday
10:30-16:30

Vehicle photos