AUDI A6 (2004-09) 4DR SALOON 2.0 TDI 140 S LINE

Buyer's Guide & Data from our Checks
The AUDI A6 (2004-09) 4DR SALOON 2.0 TDI 140 S LINE is a large, four-door diesel saloon from the UK’s executive-car class. It offers a more formal alternative to hatchbacks and SUVs, with a spacious cabin and boot suited to everyday errands, longer journeys and business travel. S line trim adds a sportier look.
With a 140hp 2.0-litre diesel, this A6 is aimed at drivers who value relaxed motorway cruising and sensible fuel use over brisk performance. It can suit commuters, couples and families needing room and comfort, though its size is less convenient in tight city streets. Compared with BMW 5 Series and Mercedes-Benz E-Class rivals, it majors on understated comfort.
mycarcheck.com recorded 459 look-ups across 227 distinct VINs; the average car had covered 153,000 miles, travelled 9,000 miles yearly and had nearly six previous keepers. Average private-sale valuation was £1,000, so check the car’s history and condition carefully.
Considering an Audi A6? Outstanding finance, write-offs, hidden damage, theft or mileage problems could turn a bargain into a costly mistake. Enter the reg now and check before you buy.
Key Findings
The following statistics are drawn from our checks of 227 different vehicles, run between February 18th 2021 and October 31st 2026. These real-world insights provide context for this vehicle's place in the market, as well as its typical usage.
459
Lookups
Lookups
50
Hidden Histories
Hidden Histories
170k
Average Mileage
Average Mileage
£1,000
Average Valuation
Average Valuation












