2021 Audi A3

Overview

Make

Audi

Model

A3

Trim

S LINE

Version

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

Mileage

50,311 miles

Year

2021

Fuel type

Diesel

Body type

Hatchback

Engine

2.0 L

Gearbox

Automatic

Power

148 bhp

Seats

5

CO2

127 g/km

Colour

Black

Doors

5

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 is advertised with 50,311 miles, approximately 7,300 above the typical mileage for its age. The dealer is asking £16,800, which is £1,615 below our market estimate of £18,415. Our estimate draws on 6,532 Audi A3 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this advert 16 days ago, and its asking price has since fallen by £730. MOT records show an expiry date of 4 October 2027, and the latest recorded mileage is consistent with the advert. It is advertised by Big Motoring World Blue Bell Hill in Chatham.

Stock data from 20 October 2026.

How we estimate prices and check cars

Price and mileage comparison

Estimated market asking price: £18,415. The asking price is £1,615 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 7,300 miles higher than typical for a 2021 Audi A3.

The advertised mileage is consistent with the last MOT reading.