2004 Audi S4 Avant 4.2

Price: £6,445. Good value: £568 (8%) under the AskCar estimate of £7,013, our expected asking price for this car from its model, age, mileage and specification, drawing on 128 priced Audi S4 Avant adverts on AskCar as of 6 November 2026.

AskCar lists 129 used Audi S4 Avant from 117 UK dealerships, as of 6 November 2026.

Overview

  • Make: Audi
  • Model: S4 Avant
  • Version: 4.2 Auto 4WD Euro 4 5dr (344 bhp)
  • Year: 2004
  • Mileage: 124,000 miles
  • Fuel: Petrol
  • Body: Estate, 5 doors, 5 seats
  • Engine: 4.2 litres, 344 bhp
  • Gearbox: Automatic
  • Drive: Four-wheel drive
  • Colour: Silver
  • CO2: 298 g/km
  • Emissions standard: Euro 4, ULEZ compliant

About this car

This 2004 Audi S4 Avant has covered 124,000 miles. Its asking price of £6,445 is £568 below the AskCar estimate of £7,013. The AskCar estimate draws on 128 Audi S4 Avant adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first saw this car advertised 162 days ago. Its asking price has since fallen by £500. The latest recorded MOT expiry date is 4 November 2026, which has passed. Confirm its status with the dealer. We checked its advertised mileage against the government's MOT record, and they match. It is for sale at Lakeview Cars in Biggleswade. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Good value: £568 (8%) under the AskCar estimate of £7,013.

The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.

It draws on 128 priced Audi S4 Avant adverts across different ages and specifications, as of 6 November 2026.

Time on sale

This 2004 Audi S4 Avant has been on sale for at least 162 days.

Price history

AskCar first saw this advert on 28 May 2026 at £6,945. Its asking price is now £6,445, £500 less. The latest price cut was seen on 22 September 2026.

Price changes recorded:

  • 29 May 2026: £6,945
  • 22 September 2026: £6,445

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: the latest record we hold ran out on 4 November 2026; ask the dealer for the current MOT.

It has had 22 MOTs. The latest, on 5 November 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 123,122 miles, which matches the advertised 124,000 miles.

Browse all Audi S4 Avant cars for sale · 2004 Audi S4 Avant price guide

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Photos

26 photos of this car are on its AskCar page.

As of 6 November 2026, AskCar lists 598,752 cars and vans from 12,905 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.