2021 Audi A4

Overview

Make

Audi

Model

A4

Trim

S LINE

Version

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

Mileage

25,865 miles

Year

2021

Fuel type

Petrol

Body type

Saloon

Engine

2.0 L

Gearbox

Automatic

Power

148 bhp

Seats

5

CO2

154 g/km

Colour

Black

Doors

4

Driven wheels

Front Wheel Drive

Gearbox version

S tronic

Engine badge

TFSI

Emissions standard

Euro 6

About this car

This 2021 Audi A4 S Line has covered 25,865 miles, around 24,300 fewer than typical for its age. At £17,500, it is advertised £1,603 below our estimated market asking price of £19,103. To estimate its market asking price, we analyse UK dealer adverts for 1,429 Audi A4 cars across different ages and specifications. We first recorded this advert 56 days ago, and its asking price has since fallen by £1,450. Its recorded MOT is valid until 19 August 2027, and its advertised mileage is consistent with the latest MOT reading. The seller is Car Planet Watford, based in Rickmansworth.

Stock data from 19 October 2026.

How we estimate prices and check cars

Price and mileage comparison

Estimated market asking price: £19,103. The asking price is £1,603 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 1,429 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 24,300 miles lower than typical for a 2021 Audi A4.

The advertised mileage is consistent with the last MOT reading.