Used diesel Audi Q3 for sale under £20,000

There are 829 used diesel Audi Q3 under £20,000 for sale from UK dealers on AskCar, as of 30 October 2026. Typical asking price £10,600 (the median: half cost less, half cost more). The cheapest is £3,500. AskCar lists 3,504 used Audi Q3 across the UK, from 1,613 dealerships.

The middle half of the 829 cars are priced between £8,000 and £14,000.

As of 30 October 2026, AskCar lists 580,490 cars and vans from 12,695 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

268 of the 829 cars had their price reduced in the last 14 days to 30 October 2026.

Median asking price by year

YearFor sale with a priceMedian asking priceMiddle half priced between
202136£18,300£16,300 to £19,300
202050£17,700£16,300 to £19,000
201978£16,800£15,500 to £18,000
201863£12,900£11,500 to £14,100
201792£12,000£10,400 to £13,500
2016192£10,000£8,900 to £12,000
2015138£9,000£8,000 to £10,000
201476£7,400£6,000 to £8,300
201353£6,500£5,700 to £7,500
201230£6,700£5,100 to £7,900

Cars for sale now, page 3 of 9

Best value first: the cars priced furthest below their AskCar estimate come first, and those without one come after. The AskCar estimate is our expected asking price for that one car, from its model, age, mileage and specification, using the 3,459 priced Audi Q3 adverts on AskCar as of 30 October 2026.

Each car: year, make, model, engine and trim, power, gearbox, fuel, body, doors, colour; mileage; price and its changes; how the price compares with the AskCar estimate; emissions standard and ULEZ compliance where it holds; MOT; dealer and town; AskCar page.

Cheaper cars like each one, with its price history, are on its AskCar page.

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