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: 21,162 miles
• Fuel: Diesel
• Body: Estate, 5 doors, 5 seats
• Engine: 2.0 litres, 201 bhp
• Gearbox: Automatic (S tronic)
• Drive: Four-wheel drive
• Colour: Blue
• CO2: 152 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 21,162 miles, this 2023 Audi A6 Avant S Line has covered about 13,400 fewer miles than other 2023 Audi A6 Avant cars. Priced at £30,990, it is advertised £745 above the AskCar estimate of £30,245. The AskCar estimate uses 783 UK dealer adverts for the Audi A6 Avant, with adjustments for age, mileage, trim, engine and other specifications. This car was first seen in our listings data 1 day ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Agnew Group Portadown Audi, based in Portadown. 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

Fair price: £745 (2%) over the AskCar estimate of £30,245.

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 783 priced Audi A6 Avant adverts across different ages and specifications, as of 6 November 2026.

A 2023 Audi A6 Avant with the 2.0 diesel engine is typically advertised at £25,300: the median of the 97 for sale on AskCar, as of 6 November 2026.

Time on sale

AskCar first saw this 2023 Audi A6 Avant advertised 1 day ago. About half of 2023 Audi A6 Avant cars are gone from sale within a month of being advertised: 69 of the 150 first advertised between 7 July 2026 and 3 October 2026.

Price history

AskCar first saw this advert on 5 November 2026 at £30,990. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 4 September 2027.

It has had one MOT, on 21 August 2026, and passed.

There were no advisories at the latest test.

Mileage at that test: 20,284 miles, which matches the advertised 21,162 miles.

Advertised mileage is about 13,400 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 6 November 2026.

The 3 closest to this car in mileage:

• 2023 Audi A6 Avant S Line, 2.0 diesel estate, grey. Mileage: 22,201 miles. Price: £29,500, £1,490 less than this car. Dealer: Sytner Select Swindon in Swindon. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2023-78017b459917
• 2023 Audi A6 Avant S Line, 2.0 diesel estate, grey. Mileage: 23,503 miles. Price: £29,749, £1,241 less 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, £1,240 less than this car. Dealer: Ballyrobert Mallusk in Belfast. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2023-d91940c40f87