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BMW 840 (diesel) • 9 cars with Valuation

Market overview: Diesel BMW 840 (August-2026): There are currently 9 used diesel BMW 840 cars for sale. Prices range from £26,338 to £32,570, with a median price of £29,690. AutoUncle has identified 2 cars as being offered below market price. The typical selling time for a diesel BMW 840 is approximately 31 days, and 11.1% of the listings have recently been reduced in price (Source: AutoUncle market data, August-2026).

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Used BMW 840 Shadowline 320 HP (235 kW) 2020 Coupe

(2020) BMW 840 Shadowline 320 HP

Good price

You save £1,505

EH11 4DJ Sighthill, Edinburgh

183 g CO2/km comb. - 320 HP (235 kW) - 6.9 Mpg

Carwow

Used BMW M340 Comfort Edition 340 HP (250 kW) 2021 White Sedan

(2021) BMW M340 Comfort Edition 340 HP

Fair price

Estimated price £31,824

YO304WR, North Yorkshire

160 g CO2/km comb. - 340 HP (250 kW) - 46.3 Mpg

Carwow

Used BMW M340 340 HP (250 kW) 2021 Blue Sedan

(2021) BMW M340 340 HP

Good price

You save £1,650

WD3 3RT Croxley Green, Hertfordshire

160 g CO2/km comb. - 340 HP (250 kW) - 6.1 Mpg

Carwow

Used BMW M340 Shadowline 340 HP (250 kW) 2021 Blue Sedan

(2021) BMW M340 Shadowline 340 HP

Fair price

PE321DD Norfolk, Norfolk

160 g CO2/km comb. - 340 HP (250 kW) - 6.1 Mpg

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Used (2020) BMW 840 Shadowline 320 HP | Good price

8 Series 2020 Standard d xDrive

2020
68,500 miles
Trim level: Shadowline
3.0L Diesel
Coupe
Automatic
320 HP (235 kW)
CO2 emissions: 183 g CO2/km comb.
6.9 mpg
Details

Good price

£26,995

EH11 4DJ Sighthill, Edinburgh

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Used (2020) BMW 840 Basis | Good price

8 Series d

2020
73,837 miles
Trim level: Basis
3.0L Diesel
Coupe
Automatic
Details

Good price

£25,900

Motors.co.uk

RH12 3SH West Sussex, West Sussex

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Used (2019) BMW 840 Comfort Edition 316 HP | Fair price

8 Series d xDrive Coupe 3.0

2019
51,686 miles
Trim level: Comfort Edition
3.0L Diesel
Coupe
Automatic
316 HP (232 kW)
CO2 emissions: 160 g CO2/km comb.
40.4 mpg
Details

Fair price

£29,470

Bmw.co.uk

RM3 0XP Greater London, London

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Used (2019) BMW 840 Comfort Edition 316 HP | Fair price

8 Series d xDrive Coupe 3.0

2019
50,671 miles
Trim level: Comfort Edition
3.0L Diesel
Coupe
Automatic
316 HP (232 kW)
CO2 emissions: 164 g CO2/km comb.
39.2 mpg
Details

Fair price

£31,000

Bmw.co.uk

WV2 West Midlands, West Midlands

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Used BMW M340 Comfort Edition 340 HP (250 kW) 2021 Blue Estate

(2021) BMW M340 Comfort Edition 340 HP

Good price

You save £1,480

BB1 3NU Lancashire, Lancashire

165 g CO2/km comb. - 340 HP (250 kW) - 6.3 Mpg

Carwow

Used BMW M340 Comfort Edition 340 HP (250 kW) 2023 Grey Sedan

(2023) BMW M340 Comfort Edition 340 HP

Good price

You save £2,110

BD21 4DH West Yorkshire, West Yorkshire

159 g CO2/km comb. - 340 HP (250 kW) - 46.3 Mpg

Carwow

Used BMW M340 M Sport 340 HP (250 kW) 2024 Estate

(2024) BMW M340 M Sport 340 HP

Good price

You save £1,810

163 g CO2/km comb. - 340 HP (250 kW) - 6.1 Mpg

Carwow

Used BMW 840 Shadowline 320 HP (235 kW) 2020 Coupe

(2020) BMW 840 Shadowline 320 HP

Good price

You save £1,505

EH11 4DJ Sighthill, Edinburgh

183 g CO2/km comb. - 320 HP (235 kW) - 6.9 Mpg

-2%

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Used (2021) BMW 840 M Sport 335 HP | Fair price

8 Series d xDrive M Sport Gran

2021
46,930 miles
Trim level: M Sport
3.0L Diesel
Coupe
Automatic
335 HP (246 kW)
CO2 emissions: 177 g CO2/km comb.
41.5 mpg
Details

Fair price

£32,950

£33,950

Bmw.co.uk

B90 4NU Shirley, West Midlands

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Used (2019) BMW 840 Comfort Edition 316 HP | Fair price

8 Series d xDrive Coupe 3.0

2019
50,826 miles
Trim level: Comfort Edition
3.0L Diesel
Coupe
Automatic
316 HP (232 kW)
CO2 emissions: 164 g CO2/km comb.
39.2 mpg
Details

Fair price

£30,250

Bmw.co.uk

GU14 6TL Hampshire, Hampshire

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Used (2020) BMW 840 Comfort Edition 316 HP | Fair price

8 Series d xDrive Coupe 3.0

2020
54,874 miles
Trim level: Comfort Edition
3.0L Diesel
Coupe
Automatic
316 HP (232 kW)
CO2 emissions: 164 g CO2/km comb.
40.4 mpg
Details

Fair price

£32,000

Bmw.co.uk

HP23 Hertfordshire, Hertfordshire

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Used (2019) BMW 840 Comfort Edition | Fair price

8 Series d xDrive 2dr Auto

2019
68,609 miles
Trim level: Comfort Edition
3.0L Diesel
Coupe
Automatic
39.8 mpg
Details

Fair price

£27,495

Motors.co.uk

BT36 4RF Antrim And Newtownabbey

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Used (2019) BMW 840 Comfort Edition | Fair price

8-Series Coupe d xDrive auto

2019
102,222 miles
Trim level: Comfort Edition
3.0L Diesel
Coupe
Automatic
39.8 mpg
Details

Fair price

£22,495

Parkers.co.uk

NG17 Sutton-In-Ashfield, Nottinghamshire

New

Used (2019) BMW 840 Comfort Edition 316 HP | Fair price

8 Series d xDrive Coupe 3.0

2019
45,073 miles
Trim level: Comfort Edition
3.0L Diesel
Coupe
Automatic
316 HP (232 kW)
CO2 emissions: 164 g CO2/km comb.
39.2 mpg
Details

Fair price

£31,495

Bmw.co.uk

RH10 1TN West Sussex, West Sussex

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Used BMW M340 Comfort Edition 340 HP (250 kW) 2021 White Sedan

(2021) BMW M340 Comfort Edition 340 HP

Fair price

Estimated price £31,824

YO304WR, North Yorkshire

160 g CO2/km comb. - 340 HP (250 kW) - 46.3 Mpg

Carwow

Used BMW M340 340 HP (250 kW) 2021 Blue Sedan

(2021) BMW M340 340 HP

Good price

You save £1,650

WD3 3RT Croxley Green, Hertfordshire

160 g CO2/km comb. - 340 HP (250 kW) - 6.1 Mpg

Carwow

Used BMW M340 Shadowline 340 HP (250 kW) 2021 Blue Sedan

(2021) BMW M340 Shadowline 340 HP

Fair price

PE321DD Norfolk, Norfolk

160 g CO2/km comb. - 340 HP (250 kW) - 6.1 Mpg

Carwow

Used BMW M340 Comfort Edition 340 HP (250 kW) 2021 Blue Estate

(2021) BMW M340 Comfort Edition 340 HP

Good price

You save £1,480

BB1 3NU Lancashire, Lancashire

165 g CO2/km comb. - 340 HP (250 kW) - 6.3 Mpg

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Used (2021) BMW 840 M Sport 340 HP | Rare vehicle

8 Series SERIES d xDrive MHT M

2021
69,855 miles
Trim level: M Sport
3.0L Diesel
Automatic
340 HP (250 kW)
Details

£29,490

Rare vehicle

Dealer

NG5 6BH Daybrook, Nottinghamshire

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Used Mercedes GLE400 AMG line 330 HP (242 kW) 2022 SUV

(2022) Mercedes GLE400 AMG line 330 HP

Fair price

220 g CO2/km comb. - 330 HP (242 kW) - 8.4 Mpg

Carwow

Used Mercedes GLE400 AMG line 330 HP (242 kW) 2022 Grey SUV

(2022) Mercedes GLE400 AMG line 330 HP

Good price

You save £2,610

S60 5BD Catcliffe, South Yorkshire

219 g CO2/km comb. - 330 HP (242 kW) - 8.0 Mpg

Carwow

Used Mercedes GLE400 AMG line 330 HP (242 kW) 2022 Grey SUV

(2022) Mercedes GLE400 AMG line 330 HP

Fair price

RG2 0HS Berkshire, Berkshire

219 g CO2/km comb. - 330 HP (242 kW) - 8.0 Mpg

Carwow

Used Mercedes GLE400 AMG line 330 HP (242 kW) 2022 SUV

(2022) Mercedes GLE400 AMG line 330 HP

Good price

You save £2,710

220 g CO2/km comb. - 330 HP (242 kW) - 8.4 Mpg

Showing 1 - 11 of 11 results

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