2021 Audi A3

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

22,000 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 has covered 22,000 miles, around 21,000 fewer than typical for its age. Our estimated market asking price is £20,228. This car is advertised at £21,995, which is £1,767 above that figure. The estimate uses 6,532 UK dealer adverts for the Audi A3, with adjustments for age, mileage, trim, engine and other specifications. It first appeared in our advert records 65 days ago. Its MOT is recorded as valid until 7 July 2027. The advertised mileage is consistent with the latest MOT reading. It is advertised by AM Autohaus in Slough.

Stock data from 20 October 2026.

How we estimate prices and check cars

Price and mileage comparison

Estimated market asking price: £20,228. The asking price is £1,767 above 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 21,000 miles lower than typical for a 2021 Audi A3.

The advertised mileage is consistent with the last MOT reading.