2023 Audi A6 Avant 2.0 TDI S Line

Overview

• Make: Audi
• Model: A6 Avant
• Trim: S Line
• Version: 2.0 TDI 40 S Line S tronic 4WD Euro 6 (s/s) 5dr (201 bhp)
• Year: 2023
• Mileage: 24,403 miles
• Fuel: Diesel
• Body: Estate, 5 doors, 5 seats
• Engine: 2.0 litres, 201 bhp
• Gearbox: Automatic (S tronic)
• Drive: Four-wheel drive
• Colour: Black
• CO2: 152 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 24,403 miles, this 2023 Audi A6 Avant S Line has covered about 10,400 fewer miles than other 2023 Audi A6 Avant cars. The dealer is asking £28,595, which is £1,054 below the AskCar estimate of £29,649. To work out the AskCar estimate, we analyse UK dealer adverts for 774 Audi A6 Avant cars across different ages and specifications. The asking price is now £957 lower than when we first recorded the advert 60 days ago. We checked its advertised mileage against the government's MOT record, and they match. The seller is Wynyard Motor Company, based in Stockton-on-Tees. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,054 (3%) under the AskCar estimate of £29,649.

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 774 priced Audi A6 Avant adverts across different ages and specifications, as of 4 November 2026.

A 2023 Audi A6 Avant with the 2.0 diesel engine is typically advertised at £25,400: the median of the 97 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2023 Audi A6 Avant has been on sale for at least 60 days.

Price history

AskCar first saw this advert on 5 September 2026 at £29,552. Its asking price is now £28,595, £957 less. The latest price cut was seen on 24 October 2026.

Price changes recorded:

• 16 October 2026: £29,552
• 24 October 2026: £28,595

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 15 May 2027.

It has had one MOT, on 16 May 2026, and passed.

There were no advisories at the latest test.

Mileage at that test: 21,382 miles, which matches the advertised 24,403 miles.

Advertised mileage is about 10,400 miles lower than the median mileage of a 2023 Audi A6 Avant on AskCar.

Similar cars

7 other 2023 Audi A6 Avant S Line 2.0 diesel automatic estates are for sale at UK dealers, from £21,990 to £29,750, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2023 Audi A6 Avant S Line, 2.0 diesel estate, grey. Mileage: 23,503 miles. Price: £29,749, £1,154 more than this car. Dealer: Ballyrobert Mallusk in Belfast. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2023-3dc2896ceb02
• 2023 Audi A6 Avant S Line, 2.0 diesel estate, grey. Mileage: 23,503 miles. Price: £29,750, £1,155 more than this car. Dealer: Ballyrobert Mallusk in Belfast. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2023-d91940c40f87
• 2023 Audi A6 Avant S Line, 2.0 diesel estate, grey. Mileage: 22,201 miles. Price: £29,500, £905 more than this car. Dealer: Sytner Select Swindon in Swindon. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2023-78017b459917

• The nearest: 2023 Audi A6 Avant S Line, 2.0 diesel estate, grey, 77 miles from this car. Mileage: 85,820 miles. Price: £21,990, £6,605 less than this car. Dealer: Brownroyd Motors in Heywood. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2023-22a8818275e7