Used diesel BMW 4 Series for sale under £20,000

There are 666 used diesel BMW 4 Series under £20,000 for sale from UK dealers on AskCar, as of 10 November 2026. Typical asking price £13,000 (the median: half cost less, half cost more). The cheapest is £3,000. AskCar lists 1,855 used BMW 4 Series across the UK, from 1,069 dealerships.

The middle half of the 666 cars are priced between £10,000 and £15,400.

As of 10 November 2026, AskCar lists 591,054 cars and vans from 12,888 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

183 of the 666 cars had their price reduced in the last 14 days to 10 November 2026.

Median asking price by year

YearFor sale with a priceMedian asking priceMiddle half priced between
201962£16,000£14,100 to £17,400
2018118£15,000£13,500 to £17,000
2017126£13,000£11,000 to £14,800
2016116£12,300£10,000 to £14,600
2015129£11,000£9,000 to £12,200
201476£9,400£7,700 to £10,600

Cars for sale now, page 1 of 7

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 1,810 priced BMW 4 Series adverts on AskCar as of 10 November 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.

BMW 4 Series by gearbox, fuel and body

Diesel BMW 4 Series by price

BMW 4 Series prices by year

BMW 4 Series by price

BMW 4 Series near you

Diesel cars and vans under £20,000

More BMW

Same budget

Everything