2018 BMW 8 Series prices
There are 15 used 2018 BMW 8 Series cars for sale from UK dealers on AskCar, as of 7 November 2026. Typical asking price £28,000 (the median: half cost less, half cost more). The cheapest is £22,995. The middle half are priced between £26,000 and £29,000. Median mileage: about 59,000 miles.
Dealers lowered the asking price on more than a quarter of 2018 BMW 8 Series cars: 4 of the 15 in the 14 days to 7 November 2026.
2018 BMW 8 Series against other years
A 2019 BMW 8 Series car has a typical asking price of £33,000, as of 7 November 2026.
AskCar lists 192 used BMW 8 Series across the UK, from 160 dealerships.
As of 7 November 2026, AskCar lists 601,018 cars and vans from 12,892 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.
2018 BMW 8 Series cars for sale now
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. All 14 cars listed here meet these rules.
The AskCar estimate is our expected asking price for that one car, from its model, age, mileage and specification, using the 183 priced BMW 8 Series adverts on AskCar as of 7 November 2026. The figures on this page describe the cars advertised, not a valuation of every 2018 BMW 8 Series.
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 1 car whose advertised mileage is lower than the mileage recorded at its last MOT test.
Best value 2018 BMW 8 Series: priced furthest below the AskCar estimate
Their asking prices run from £24,495 to £29,990.
- 2018 BMW 8 Series 3.0 840d, 316 bhp, automatic, diesel, coupe, 2 doors, 4 seats, blue. Mileage: 40,000 miles. Price: £28,490, reduced by £1,100 from £29,590 since AskCar first saw it on 28 May 2026, 163 days ago. Fair price: £1,910 (6%) under the AskCar estimate of £30,400. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 13 November 2026. Dealer: S James Prestige in Essendine. AskCar page: https://askcar.co.uk/car/bmw-8-series-2018-c08228486c21
- 2018 BMW 8 Series 3.0 840d, 316 bhp, automatic, diesel, coupe, 2 doors, 4 seats, blue. Mileage: 68,127 miles. Price: £24,495, unchanged since AskCar first saw it on 1 November 2026, 6 days ago. Fair price: £1,204 (4%) under the AskCar estimate of £25,699. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 28 November 2026. Dealer: Tenby Car Supermarket in Luton. AskCar page: https://askcar.co.uk/car/bmw-8-series-2018-efb4bd300a19
- 2018 BMW 8 Series 3.0 840d, 315 bhp, automatic, diesel, coupe, 2 doors, 4 seats, orange. Mileage: 49,000 miles. Price: £27,995, reduced by £2,000 from £29,995 since AskCar first saw it on 30 May 2026, 161 days ago. Fair price: £1,180 (4%) under the AskCar estimate of £29,175. Euro 6 emissions standard. ULEZ compliant. MOT: the latest record we hold ran out on 15 September 2026; ask the dealer for the current MOT. Dealer: Cramag in Yeadon. AskCar page: https://askcar.co.uk/car/bmw-8-series-2018-b7e0091d8c70
- 2018 BMW 8 Series 3.0 840d, 315 bhp, automatic, diesel, coupe, 2 doors, 4 seats, blue. Mileage: 48,145 miles. Price: £28,505, reduced by £3,573 from £32,078 since AskCar first saw it on 14 August 2026, 85 days ago. Fair price: £807 (2%) under the AskCar estimate of £29,312. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 18 November 2026. Dealer: Stratstone Bmw Harrogate in Harrogate. AskCar page: https://askcar.co.uk/car/bmw-8-series-2018-7f1deb520b1e
- 2018 BMW 8 Series 3.0 840d, 316 bhp, automatic, diesel, coupe, 2 doors, 4 seats, blue. Mileage: 39,000 miles. Price: £29,990, unchanged since AskCar first saw it on 31 October 2026, 7 days ago. Fair price: £576 (1%) under the AskCar estimate of £30,566. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 27 October 2027. Dealer: LTV in Manchester. AskCar page: https://askcar.co.uk/car/bmw-8-series-2018-fc5eaf1e73e0
- 2018 BMW 8 Series 3.0 840d, 315 bhp, automatic, diesel, coupe, 2 doors, 4 seats, white. Mileage: 53,650 miles. Price: £27,995, reduced by £2,000 from £29,995 since AskCar first saw it on 28 May 2026, 163 days ago. Fair price: £448 (1%) under the AskCar estimate of £28,443. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 10 March 2027. Dealer: Quality Cars Today in Sheffield. AskCar page: https://askcar.co.uk/car/bmw-8-series-2018-dbbbca53dc00
- 2018 BMW 8 Series 3.0 840d, 315 bhp, automatic, diesel, coupe, 2 doors, 4 seats, black. Mileage: 42,001 miles. Price: £29,990, unchanged since AskCar first saw it on 7 October 2026, 31 days ago. Fair price: £323 (1%) under the AskCar estimate of £30,313. Euro 6 emissions standard. ULEZ compliant. Dealer: Lloyd Colne BMW in Colne. AskCar page: https://askcar.co.uk/car/bmw-8-series-2018-1ead8b4f6195
- 2018 BMW 8 Series 3.0 840d, 315 bhp, automatic, diesel, coupe, 2 doors, 4 seats, black. Mileage: 42,001 miles. Price: £29,990, unchanged since AskCar first saw it on 30 September 2026, 38 days ago. Fair price: £323 (1%) under the AskCar estimate of £30,313. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 22 March 2027. Dealer: Lloyd Colne BMW in Colne. AskCar page: https://askcar.co.uk/car/bmw-8-series-2018-6d6960565928
- 2018 BMW 8 Series 3.0 840d, 316 bhp, automatic, diesel, coupe, 2 doors, 4 seats, blue. Mileage: 61,000 miles. Price: £26,995, unchanged since AskCar first saw it on 22 October 2026, 16 days ago. Fair price: £60 (under 1%) under the AskCar estimate of £27,055. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 12 November 2026. Dealer: Autothentic in Tockwith. AskCar page: https://askcar.co.uk/car/bmw-8-series-2018-a05669dac750
- 2018 BMW 8 Series 3.0 840d, 316 bhp, automatic, diesel, coupe, 2 doors, 4 seats, orange. Mileage: 65,000 miles. Price: £26,695, reduced by £300 from £26,995 since AskCar first saw it on 20 October 2026, 18 days ago. Fair price: £409 (1%) over the AskCar estimate of £26,286. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 25 December 2026. Dealer: Copnor Road Cars in Copnor. AskCar page: https://askcar.co.uk/car/bmw-8-series-2018-7cc9f65c15ff
Cheapest 2018 BMW 8 Series: the lowest asking prices
These 10 are priced £22,995 to £28,505. They have covered 40,000 to 92,000 miles.
- 2018 BMW 8 Series 3.0 840d, 316 bhp, automatic, diesel, coupe, 2 doors, 4 seats, black. Mileage: 92,000 miles. Price: £22,995, reduced by £500 from £23,495 since AskCar first saw it on 10 June 2026, 150 days ago. Fair price: £1,363 (6%) over the AskCar estimate of £21,632. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 9 March 2027. Dealer: Wheels Excellence in Chesham. AskCar page: https://askcar.co.uk/car/bmw-8-series-2018-a922728c1ed0
- 2018 BMW 8 Series 3.0 840d, 316 bhp, automatic, diesel, coupe, 2 doors, 4 seats, blue. Mileage: 77,324 miles. Price: £24,495, unchanged since AskCar first saw it on 2 November 2026, 5 days ago. Fair price: £446 (1%) over the AskCar estimate of £24,049. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 30 July 2027. Dealer: VD Motor Group in London. AskCar page: https://askcar.co.uk/car/bmw-8-series-2018-2f1fbfd70508
- 2018 BMW 8 Series 3.0 840d: £24,495, 68,127 miles. Listed in full under best value.
- 2018 BMW 8 Series 3.0 840d, 316 bhp, automatic, diesel, coupe, 2 doors, 4 seats, white. Mileage: 69,861 miles. Price: £25,950, unchanged since AskCar first saw it on 14 October 2026, 24 days ago. Fair price: £570 (2%) over the AskCar estimate of £25,380. Euro 6 emissions standard. ULEZ compliant. MOT: the latest record we hold ran out on 23 February 2026; ask the dealer for the current MOT. Dealer: JS Prestige and Performance in Enfield. AskCar page: https://askcar.co.uk/car/bmw-8-series-2018-61a9ec0c3a97
- 2018 BMW 8 Series 3.0 840d: £26,695, 65,000 miles. Listed in full under best value.
- 2018 BMW 8 Series 3.0 840d: £26,995, 61,000 miles. Listed in full under best value.
- 2018 BMW 8 Series 3.0 840d: £27,995, 49,000 miles. Listed in full under best value.
- 2018 BMW 8 Series 3.0 840d: £27,995, 53,650 miles. Listed in full under best value.
- 2018 BMW 8 Series 3.0 840d: £28,490, 40,000 miles. Listed in full under best value.
- 2018 BMW 8 Series 3.0 840d: £28,505, 48,145 miles. Listed in full under best value.
Lowest-mileage 2018 BMW 8 Series
These 10 have covered 39,000 to 65,000 miles. Their asking prices run from £26,695 to £30,690.
- 2018 BMW 8 Series 3.0 840d: £29,990, 39,000 miles. Listed in full under best value.
- 2018 BMW 8 Series 3.0 840d: £28,490, 40,000 miles. Listed in full under best value.
- 2018 BMW 8 Series 3.0 840d: £29,990, 42,001 miles. Listed in full under best value.
- 2018 BMW 8 Series 3.0 840d: £29,990, 42,001 miles. Listed in full under best value.
- 2018 BMW 8 Series 3.0 840d: £28,505, 48,145 miles. Listed in full under best value.
- 2018 BMW 8 Series 3.0 840d: £27,995, 49,000 miles. Listed in full under best value.
- 2018 BMW 8 Series 3.0 840d: £27,995, 53,650 miles. Listed in full under best value.
- 2018 BMW 8 Series 3.0 840d, 315 bhp, automatic, diesel, coupe, 2 doors, 4 seats, blue. Mileage: 58,667 miles. Price: £30,690, raised by £690 from £30,000 since AskCar first saw it on 9 July 2026, 121 days ago. Above the going rate: £3,017 (10%) over the AskCar estimate of £27,673. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 4 January 2027. Dealer: Sytner Leicester BMW in Leicester. AskCar page: https://askcar.co.uk/car/bmw-8-series-2018-01ec94c2e967
- 2018 BMW 8 Series 3.0 840d: £26,995, 61,000 miles. Listed in full under best value.
- 2018 BMW 8 Series 3.0 840d: £26,695, 65,000 miles. Listed in full under best value.
Recently reduced 2018 BMW 8 Series: the biggest price reductions in the 14 days to 7 November 2026
The dealer lowered the asking price on each of these 3 in the 14 days to 7 November 2026. Their reductions since AskCar first saw them run from £300 to £3,573.
- 2018 BMW 8 Series 3.0 840d: £28,505, 48,145 miles. Listed in full under best value.
- 2018 BMW 8 Series 3.0 840d: £28,490, 40,000 miles. Listed in full under best value.
- 2018 BMW 8 Series 3.0 840d: £26,695, 65,000 miles. Listed in full under best value.
Newly advertised 2018 BMW 8 Series: first seen by AskCar in the 7 days to 7 November 2026
These 2 are the most recently advertised. Cars first seen on the same day are listed cheapest first.
- 2018 BMW 8 Series 3.0 840d: £24,495, 77,324 miles. Listed in full under cheapest.
- 2018 BMW 8 Series 3.0 840d: £24,495, 68,127 miles. Listed in full under best value.
BMW 8 Series by gearbox, fuel and body
- Petrol BMW 8 Series (138 cars)
- Diesel BMW 8 Series (53 cars)
- BMW 8 Series coupe (136 cars)
- BMW 8 Series convertible (37 cars)
BMW 8 Series prices by year
BMW 8 Series by trim
BMW 8 Series by price
BMW 8 Series near you
- In England (178 cars)
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