2018 Audi A3 prices under £15,000

There are 291 used 2018 Audi A3 cars for sale under £15,000 from UK dealers on AskCar, as of 5 November 2026. Typical asking price £11,300 (the median: half cost less, half cost more). The cheapest is £4,495. The middle half are priced between £9,900 and £13,000. Median mileage: about 69,000 miles.

Dealers lowered the asking price on more than a quarter of 2018 Audi A3 cars under £15,000: 86 of the 291 in the 14 days to 5 November 2026.

AskCar lists 6,826 used Audi A3 across the UK, from 2,317 dealerships.

As of 5 November 2026, AskCar lists 595,776 cars and vans from 12,945 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

2018 Audi A3 cars for sale now under £15,000, page 1 of 6

This page picks out up to 10 cars in each of these groups: best value, cheapest, lowest mileage, recently reduced and newly advertised. A car in more than one group is listed in full once. The groups pick only from cars with photos and an AskCar estimate, priced at £500 or more and no more than 25% under that estimate. 262 of the 274 cars listed here meet these rules. Pages 2 to 6 list every other 2018 Audi A3 car, cheapest first, including the 12 the groups do not pick from.

The AskCar estimate is our expected asking price for that one car, from its model, age, mileage and specification, using the 6,645 priced Audi A3 adverts on AskCar as of 5 November 2026. The figures on this page describe the cars advertised, not a valuation of every 2018 Audi A3.

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. Each car's AskCar page has its full price history and cheaper cars like it.

This list leaves out 17 cars whose advertised mileage is lower than the mileage recorded at their last MOT test.

Best value 2018 Audi A3: priced furthest below the AskCar estimate

These 10 are priced 10% to 15% under their AskCar estimate. Their asking prices run from £4,495 to £12,450.

Cheapest 2018 Audi A3: the lowest asking prices

These 10 are priced £4,495 to £6,999. They have covered 96,334 to 167,900 miles.

Lowest-mileage 2018 Audi A3

These 10 have covered 20,000 to 29,300 miles. Their asking prices run from £11,995 to £14,999.

Recently reduced 2018 Audi A3: the biggest price reductions in the 14 days to 5 November 2026

The dealer lowered the asking price on each of these 10 in the 14 days to 5 November 2026. Their reductions since AskCar first saw them run from £1,200 to £2,550.

Newly advertised 2018 Audi A3: first seen by AskCar in the 7 days to 5 November 2026

These 10 are the most recently advertised. Cars first seen on the same day are listed cheapest first.

Audi A3 by gearbox, fuel and body

Audi A3 under £15,000 by gearbox, fuel and body

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