2018 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 FWD Euro 6 (s/s) 5dr (201 bhp)
• Year: 2018
• Mileage: 154,000 miles
• Fuel: Diesel
• Body: Estate, 5 doors, 5 seats
• Engine: 2.0 litres, 201 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Grey
• CO2: 124 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Audi A6 Avant S Line is advertised with 154,000 miles, approximately 71,100 above the typical mileage for its age. The dealer is asking £14,995, which is £4,809 above the AskCar estimate of £10,186. To work out the AskCar estimate, we analyse UK dealer adverts for 778 Audi A6 Avant cars across different ages and specifications. We first recorded this car for sale 93 days ago. The recorded MOT expired on 15 October 2026, so ask the dealer whether it has been renewed. Its advertised mileage matches the government's MOT record. The seller is Enzo Cars & Vans, based in Darwen. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Above the going rate: £4,809 (47%) over the AskCar estimate of £10,186.

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 778 priced Audi A6 Avant adverts across different ages and specifications, as of 2 November 2026.

A 2018 Audi A6 Avant with the 2.0 diesel engine is typically advertised at £14,700: the median of the 50 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2018 Audi A6 Avant has been on sale for at least 93 days.

Price history

AskCar first saw this advert on 1 August 2026 at £13,495. Its asking price is now £14,995, £1,500 more.

Price changes recorded:

• 1 August 2026: £13,495
• 3 August 2026: £12,995
• 26 October 2026: £14,995

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: the latest record we hold ran out on 15 October 2026; ask the dealer for the current MOT.

It failed its MOT on 16 October 2025 (nearside front tyre tread depth below requirements of 1.6mm) and passed later the same day.

Advisories at the latest test: offside rear tyre slightly damaged/cracking or perishing worn unevenly on inner edge caused by separation or partial failure of its structure; nearside rear road wheel slightly distorted inner bead.

Mileage at that test: 136,444 miles, which matches the advertised 154,000 miles.

Advertised mileage is about 71,100 miles higher than the median mileage of a 2018 Audi A6 Avant on AskCar.

Similar cars

14 other 2018 Audi A6 Avant S Line 2.0 diesel automatic estates are for sale at UK dealers, from £9,950 to £20,299, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2018 Audi A6 Avant S Line, 2.0 diesel estate, black. Mileage: 135,961 miles. Price: £13,995, £1,000 less than this car. Dealer: Motorport in Bedford. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-f99a1b062ea8
• 2018 Audi A6 Avant S Line, 2.0 diesel estate, grey. Mileage: 124,000 miles. Price: £9,950, £5,045 less than this car. Dealer: Windmill Motors in Bourne. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-7713e446c241
• 2018 Audi A6 Avant S Line, 2.0 diesel estate, white. Mileage: 121,177 miles. Price: £13,995, £1,000 less than this car. Dealer: Blackline Motors in Oldham. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-41093fc03c2b

• The nearest: 2018 Audi A6 Avant S Line, 2.0 diesel estate, grey, 13 miles from this car. Mileage: 72,748 miles. Price: £15,990, £995 more than this car. Dealer: Brownroyd Motors in Heywood. AskCar page: https://askcar.co.uk/car/audi-a6-avant-2018-c16c20409f0c