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BMW 420 (petrol) • 847 cars with Valuation

Market overview: BMW 420 (petrol): What is the market value? 847 cars in database. Prices from £10,850. Compare range, options and prices here.

Featured deals

Carwow

Used 2025 BMW 420 M Sport Cabriolet | £31,790 (Super price)
BMW 420 - 4 Series Convertible i M Sport 2dr Step Auto
£31,790

Super price

You save £5,510
CT27PX, Kent

154 g CO2/km comb. - 184 HP (135 kW) - 6.8 Mpg

Carwow

White Used 2024 BMW 420 M Sport Coupe | £32,049 (Super price)
BMW 420 4 Series i M Sport 5dr Step Auto
£32,049

Super price

You save £4,751
E47PX Chingford, London

153 g CO2/km comb. - 184 HP (135 kW) - 6.6 Mpg

Carwow

Used 2025 BMW 420 M Sport Cabriolet | £30,900 (Super price)
BMW 420 - 4 Series Convertible i M Sport 2dr Step Auto
£30,900

Super price

You save £4,600
CM13BH Chelmsford, Essex

154 g CO2/km comb. - 184 HP (135 kW) - 6.8 Mpg

Carwow

Used 2025 BMW 420 M Sport Cabriolet | £29,950 (Super price)
BMW 420 - 4 Series Convertible i M Sport 2dr Step Auto
£29,950

Super price

You save £4,950
CM13BH Chelmsford, Essex

154 g CO2/km comb. - 184 HP (135 kW) - 6.8 Mpg

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Good price

Fair price

A bit pricey

Expensive

-3%
1 / 4

Used (2021) BMW 420 M Sport 184 HP | Good price

- 4 Series Gran Coupe i xDrive M

  • 2021
  • 45,272 miles
  • Trim level: M Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 184 HP (135 kW)
  • mpg: 7.8
  • CO2: 178 g CO2/km comb.
  • Details
autouncle-certified

Good price

£18,000
£18,590
E48PZ, London
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1 / 4

Used (2021) BMW 420 M Sport 184 HP | Super price

- 4 Series Gran Coupe i xDrive M

  • 2021
  • 40,090 miles
  • Trim level: M Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 184 HP (135 kW)
  • mpg: 7.8
  • CO2: 178 g CO2/km comb.
  • Details
autouncle-certified

Super price

£17,099
£16,699
CW73AL, Cheshire
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Availability verified

Used (2021) BMW 420 M Sport 184 HP | Good price

- 4 Series Gran Coupe i M Sport

  • 2021
  • 58,729 miles
  • Trim level: M Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 184 HP (135 kW)
  • mpg: 7.3
  • CO2: 169 g CO2/km comb.
  • Details
autouncle-certified

Good price

£15,990
£15,570
NE83HL, Tyne And Wear
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1 / 2

Used (2021) BMW 420 M Sport 184 HP | Super price

- 4 Series Gran Coupe i M Sport

  • 2021
  • 57,300 miles
  • Trim level: M Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 184 HP (135 kW)
  • mpg: 7.3
  • CO2: 169 g CO2/km comb.
  • Details
autouncle-certified

Super price

£15,450
£15,250
SS25EZ, Essex
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Availability verified
-1%
1 / 4

Used (2025) BMW 420 M Sport 184 HP | Super price

- 4 Series Convertible i M Sport

  • 2025
  • 36,531 miles
  • Trim level: M Sport
  • 2.0L Petrol
  • Cabriolet
  • Automatic
  • 184 HP (135 kW)
  • mpg: 6.8
  • CO2: 154 g CO2/km comb.
  • Details
autouncle-certified

Super price

£29,950
£30,500
CM13BH Chelmsford, Essex
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-5%
1 / 4

Used (2025) BMW 420 M Sport 184 HP | Super price

- 4 Series Convertible i M Sport

  • 2025
  • 13,010 miles
  • Trim level: M Sport
  • 2.0L Petrol
  • Cabriolet
  • Automatic
  • 184 HP (135 kW)
  • mpg: 6.8
  • CO2: 154 g CO2/km comb.
  • Details
autouncle-certified

Super price

£31,995
£33,993
SO533YU, Hampshire
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1 / 4

Used (2021) BMW 420 M Sport 184 HP | Super price

- 4 Series Gran Coupe i xDrive M

  • 2021
  • 50,807 miles
  • Trim level: M Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 184 HP (135 kW)
  • mpg: 7.8
  • CO2: 178 g CO2/km comb.
  • Details
autouncle-certified

Super price

£15,290
£14,990
TS170BE, North Yorkshire
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Availability verified

Used (2020) BMW 420 M Sport 184 HP | Good price

- 4 Series i M Sport 2dr Auto

  • 2020
  • 19,874 miles
  • Trim level: M Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 184 HP (135 kW)
  • mpg: 7.3
  • CO2: 170 g CO2/km comb.
  • Details
autouncle-certified

Good price

£17,150
N111GN Barnet, London
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1 / 4

Used (2020) BMW 420 M Sport 184 HP | Good price

- 4 Series i M Sport 2dr Auto

  • 2020
  • 57,555 miles
  • Trim level: M Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 184 HP (135 kW)
  • mpg: 7.3
  • CO2: 170 g CO2/km comb.
  • Details
autouncle-certified

Good price

£14,899
£15,000
CV79FU, Warwickshire
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1 / 4

Used (2021) BMW 420 M Sport 184 HP | Good price

- 4 Series Gran Coupe i xDrive M

  • 2021
  • 59,000 miles
  • Trim level: M Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 184 HP (135 kW)
  • mpg: 7.8
  • CO2: 178 g CO2/km comb.
  • Details
autouncle-certified

Good price

£16,949
£16,999
SO150LP, Hampshire
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Availability verified

Featured deals

Carwow

Used 2025 BMW 420 M Sport Cabriolet | £31,995 (Super price)
BMW 420 - 4 Series Convertible i M Sport 2dr Step Auto
£31,995

Super price

You save £5,605
SO533YU, Hampshire

154 g CO2/km comb. - 184 HP (135 kW) - 6.8 Mpg

Carwow

Black Used 2022 BMW 420 M Sport Coupe | £25,295 (Fair price)
BMW 420 4 Series i xDrive M Sport 2dr Step Auto
£25,295

Fair price

Estimated price £24,461
S802QD Hinckley, Nottinghamshire

154 g CO2/km comb. - 184 HP (135 kW) - 6.8 Mpg

Carwow

White Used 2024 BMW 420 M Sport Coupe | £30,899 (Super price)
BMW 420 4 Series i M Sport 5dr Step Auto
£30,899

Super price

You save £5,801
WA89WZ, Cheshire

153 g CO2/km comb. - 184 HP (135 kW) - 6.6 Mpg

Carwow

Used 2025 BMW 420 M Sport Hatchback | £40,087 (Fair price)
BMW 420 4 Series i M Sport 5dr Step Auto [Pro Pack] Petrol Hatchback
£40,087

Fair price

Estimated price £39,594
TS183RB, Durham

153 g CO2/km comb. - 184 HP (135 kW) - 42.0 Mpg

1 / 3

Used (2020) BMW 420 M Sport 184 HP | Good price

4 SERIES GRAN COUPE i M Sport 5dr

  • 2020
  • 27,120 miles
  • Trim level: M Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 184 HP (135 kW)
  • mpg: 46.3
  • CO2: 169 g CO2/km comb.
  • Details
autouncle-certified

Good price

£19,699
£19,499
CW73AL, Cheshire
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Availability verified

Used (2021) BMW 420 M Sport 184 HP | Super price

- 4 Series Gran Coupe i M Sport

  • 2021
  • 40,757 miles
  • Trim level: M Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 184 HP (135 kW)
  • mpg: 7.3
  • CO2: 169 g CO2/km comb.
  • Details
autouncle-certified

Super price

£16,100
WD33RT Watford, Hertfordshire
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Availability verified
-1%
1 / 4

Used (2021) BMW 420 Sport Line 184 HP | Super price

- 4 Series Gran Coupe i xDrive

  • 2021
  • 37,179 miles
  • Trim level: Sport Line
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 184 HP (135 kW)
  • mpg: 7.8
  • CO2: 182 g CO2/km comb.
  • Details
autouncle-certified

Super price

£15,950
£16,150
DE655FJ Hilton, Derbyshire
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Availability verified
-5%
1 / 4

Used (2025) BMW 420 M Sport 184 HP | Good price

4 Series i M Sport Coupe 2.0

  • 2025
  • 3,000 miles
  • Trim level: M Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 184 HP (135 kW)
  • mpg: 44.1
  • CO2: 144 g CO2/km comb.
  • Details
autouncle-certified

Good price

£36,990
£38,990
CT2 7PX Canterbury, Kent
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Availability verified
-5%
1 / 4

Used (2021) BMW 420 M Sport 184 HP | Super price

- 4 Series Gran Coupe i xDrive M

  • 2021
  • 42,786 miles
  • Trim level: M Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 184 HP (135 kW)
  • mpg: 7.8
  • CO2: 178 g CO2/km comb.
  • Details
autouncle-certified

Super price

£17,350
£18,450
DE655FJ Hilton, Derbyshire
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Availability verified
-6%
1 / 4

Used (2020) BMW 420 M Sport 184 HP | Good price

- 4 Series i M Sport 2dr Auto

  • 2020
  • 49,355 miles
  • Trim level: M Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 184 HP (135 kW)
  • mpg: 7.3
  • CO2: 170 g CO2/km comb.
  • Details
autouncle-certified

Good price

£13,995
£14,895
W1H7AB, London
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Availability verified
-1%

Used (2021) BMW 420 M Sport 184 HP | Super price

- 4 Series Gran Coupe i M Sport

  • 2021
  • 52,000 miles
  • Trim level: M Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 184 HP (135 kW)
  • mpg: 7.3
  • CO2: 169 g CO2/km comb.
  • Details
autouncle-certified

Super price

£15,450
£15,650
DE655FJ Hilton, Derbyshire
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Availability verified
-7%
1 / 3

Used (2024) BMW 420 M Sport 184 HP | Super price

4 Series i M Sport 5dr Step Auto

  • 2024
  • 17,083 miles
  • Trim level: M Sport
  • 2.0L Petrol
  • Hatchback
  • Automatic
  • 184 HP (135 kW)
  • mpg: 42.0
  • CO2: 153 g CO2/km comb.
  • Details
autouncle-certified

Super price

£33,965
£36,745
YO304WR, North Yorkshire
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1 / 4

Used (2021) BMW 420 M Sport 184 HP | Good price

- 4 Series Gran Coupe i M Sport

  • 2021
  • 33,900 miles
  • Trim level: M Sport
  • 2.0L Petrol
  • Coupe
  • Manual
  • 184 HP (135 kW)
  • mpg: 7.4
  • CO2: 170 g CO2/km comb.
  • Details
autouncle-certified

Good price

£15,799
PE321DD, Norfolk
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Availability verified

Used (2021) BMW 420 M Sport 184 HP | Super price

- 4 Series Gran Coupe i M Sport

  • 2021
  • 21,892 miles
  • Trim level: M Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 184 HP (135 kW)
  • mpg: 7.3
  • CO2: 169 g CO2/km comb.
  • Details
autouncle-certified

Super price

£18,850
£18,550
DE655FJ Hilton, Derbyshire
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Featured deals

Carwow

Grey Used 2024 BMW 420 M Sport Hatchback | £33,965 (Super price)
BMW 420 4 Series i M Sport 5dr Step Auto [Pro Pack] Petrol Hatchback
£33,965

Super price

You save £4,035
YO304WR, North Yorkshire

153 g CO2/km comb. - 184 HP (135 kW) - 42.0 Mpg

Carwow

Used 2025 BMW 420 M Sport Hatchback | £37,370 (Fair price)
BMW 420 4 Series i M Sport 5dr Step Auto Petrol Hatchback
£37,370

Fair price

You save £730
TA66DD, Somerset

153 g CO2/km comb. - 184 HP (135 kW) - 42.0 Mpg

Carwow

Blue Used 2020 BMW 420 M Sport Coupe | £19,699 (Good price)
BMW 420 4 SERIES GRAN COUPE i M Sport 5dr Auto [Professional Media] [Navigation, Harman Kardon, Climate Control, Leather Trim, Privacy Glass]
£19,699

Good price

You save £2,401
CW73AL, Cheshire

169 g CO2/km comb. - 184 HP (135 kW) - 46.3 Mpg

Carwow

Grey Used 2024 BMW 420 M Sport Coupe | £37,302 (Fair price)
BMW 420 4 Series Gran Coupe i M Sport 5dr Step Auto
£37,302

Fair price

Estimated price £37,257
WC1E 7DP London, London

153 g CO2/km comb. - 184 HP (135 kW) - 6.6 Mpg

1 / 4

Used (2020) BMW 420 M Sport 184 HP | Good price

- 4 Series i xDrive M Sport 2dr

  • 2020
  • 39,489 miles
  • Trim level: M Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 184 HP (135 kW)
  • mpg: 7.8
  • CO2: 179 g CO2/km comb.
  • Details
autouncle-certified

Good price

£16,990
DL12LD Darlington, Durham
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Availability verified
-10%
1 / 4

Used (2024) BMW 420 M Sport 184 HP | Super price

4 Series i M Sport 5dr Step

  • 2024
  • 6,326 miles
  • Trim level: M Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 184 HP (135 kW)
  • mpg: 6.6
  • CO2: 153 g CO2/km comb.
  • Details
autouncle-certified

Super price

£32,049
£35,899
E47PX Chingford, London
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Availability verified
-12%
1 / 4

Used (2024) BMW 420 M Sport 184 HP | Super price

4 Series i M Sport 5dr Step

  • 2024
  • 6,791 miles
  • Trim level: M Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 184 HP (135 kW)
  • mpg: 6.6
  • CO2: 153 g CO2/km comb.
  • Details
autouncle-certified

Super price

£30,899
£35,249
WA89WZ, Cheshire
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Availability verified
-3%

New (2025) BMW 420 M Sport 184 HP | Super price

- 4 Series Gran Coupe i M Sport

  • 2025
  • 0 miles
  • Trim level: M Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 184 HP (135 kW)
  • mpg: 6.6
  • CO2: 153 g CO2/km comb.
  • Details
autouncle-certified

Super price

£43,996
£45,690
PO35FF Southampton, Hampshire
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Availability verified
-3%

New (2025) BMW 420 M Sport 184 HP | Good price

- 4 Series Gran Coupe i M Sport

  • 2025
  • 0 miles
  • Trim level: M Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 184 HP (135 kW)
  • mpg: 6.6
  • CO2: 153 g CO2/km comb.
  • Details
autouncle-certified

Good price

£45,448
£47,225
PO35FF Southampton, Hampshire
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Featured deals

Carwow

White Used 2025 BMW 420 M Sport Coupe | £36,990 (Good price)
BMW 420 4 Series i M Sport Coupe 2.0 2dr
£36,990

Good price

You save £3,210
CT2 7PX Canterbury, Kent

144 g CO2/km comb. - 184 HP (135 kW) - 44.1 Mpg

Carwow

Used 2021 BMW 420 M Sport Coupe | £17,650 (Super price)
BMW 420 - 4 Series Gran Coupe i xDrive M Sport 5dr Auto [Professional Media]
£17,650

Super price

You save £3,850
WD33RT Watford, Hertfordshire

178 g CO2/km comb. - 184 HP (135 kW) - 7.8 Mpg

Carwow

New 2025 BMW 420 M Sport Coupe | £47,282 (Fair price)
BMW 420 - 4 Series i M Sport 2dr Step Auto
£47,282

Fair price

You save £1,318
GU11RD Guildford, Surrey

144 g CO2/km comb. - 184 HP (135 kW) - 6.3 Mpg

Carwow

Black Used 2020 BMW 420 M Sport Coupe | £18,199 (Fair price)
BMW 420 - 4 Series Gran Coupe i M Sport 5dr Auto [Professional Media]
£18,199

Fair price

You save £501
DH32BQ Birtley, Durham

169 g CO2/km comb. - 184 HP (135 kW) - 7.3 Mpg

Showing 1 - 25 of 844 results
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