BMW 420 (M Sport) • 1,443 cars with analysis

Market overview: Market price for BMW 420 (M Sport): The average price is £23,743, ranging from £8,995 to £46,117. Among 1,443 cars with the M Sport trim, AutoUncle identified 265 good deals listed below market value.

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M Sport

(2023) BMW 420 M Sport 184 HP

£28,999

Fair price

You save £401

CW7 3AL Cheshire West And Chester, Cheshire

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

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M Sport

(2022) BMW 420 M Sport 190 HP

£26,899

Fair price

You save £301

TS18 3RW Stockton-On-Tees, Durham

122 g CO2/km comb. - 190 HP (139 kW) - 4.7 Mpg

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M Sport

(2022) BMW 420 M Sport 190 HP

£28,060

Fair price

Estimated price £27,216

SO31 7FL Lower Swanwick, Hampshire

122 g CO2/km comb. - 190 HP (139 kW) - 4.7 Mpg

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M Sport

(2023) BMW 420 M Sport 184 HP

£25,249

Super price

You save £2,851

E4 7PX Greater London, London

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

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Super price

Good price

Fair price

A bit pricey

Expensive

-4%

1 / 3

Used (2019) BMW 420 M Sport 184 HP | Good price

- 4 Series i M Sport 2dr Auto

2019
36,672 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 170 g CO2/km comb.
mpg: 7.3
Details

Good price

£16,349

£17,104

RM13 8RH Greater London, London

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1 / 4

Used (2023) BMW 420 M Sport 184 HP | Good price

4 Series i xDrive M Sport Coupe

2023
17,927 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 154 g CO2/km comb.
mpg: 41.5
Details

Good price

£30,862

£29,851

NE36 0BQ West Boldon, Tyne And Wear

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-2%

1 / 4

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

- 4 Series i xDrive M Sport 2dr

2020
35,850 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 179 g CO2/km comb.
mpg: 7.8
Details

Super price

£15,920

£16,295

W1H 7AB Greater London, London

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-1%

1 / 3

Used (2020) BMW 420 M Sport 190 HP | Good price

- 4 Series d [190] M Sport 2dr

2020
37,993 miles
Trim level: M Sport
2.0L Diesel
Coupe
Automatic
190 HP (139 kW)
CO2 emissions: 149 g CO2/km comb.
mpg: 5.7
Details

Good price

£16,915

£17,253

E6 5LU Greater London, London

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M Sport

(2022) BMW 420 M Sport 190 HP

£25,250

Fair price

You save £150

WD3 3RT Croxley Green, Hertfordshire

130 g CO2/km comb. - 190 HP (139 kW) - 5.0 Mpg

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M Sport

(2023) BMW 420 M Sport 184 HP

£29,692

Fair price

Estimated price £28,555

SO53 3YU Cross Rise, Hampshire

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

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M Sport

(2025) BMW 420 M Sport 184 HP

£29,150

Super price

You save £5,350

CM1 3BH Essex, Essex

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

Carwow

M Sport

(2023) BMW 420 M Sport 184 HP

£28,993

Fair price

Estimated price £28,719

SO53 3YU Cross Rise, Hampshire

151 g CO2/km comb. - 184 HP (135 kW) - 42.8 Mpg

-3%

1 / 4

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

- 4 Series Gran Coupe i M Sport

2021
48,250 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 169 g CO2/km comb.
mpg: 7.3
Details

Super price

£16,320

£16,995

W1H7AB

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-3%

1 / 3

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

- 4 Series Gran Coupe i xDrive M

2021
73,833 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 178 g CO2/km comb.
mpg: 7.8
Details

Good price

£15,806

£16,375

E65LU

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New

1 / 3

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

- 4 Series i M Sport 2dr Auto

2020
45,431 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 170 g CO2/km comb.
mpg: 7.3
Details

Good price

£16,144

BD2 1DS West Yorkshire, West Yorkshire

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-10%

1 / 4

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

- 4 Series Gran Coupe i M Sport

2020
40,472 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 169 g CO2/km comb.
mpg: 7.3
Details

Super price

£16,499

£18,399

DH3 2BQ Birtley, Durham

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-7%

1 / 4

Used (2023) BMW 420 M Sport 184 HP | Super price

- 4 Series i M Sport Pro Edition

2023
33,219 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 151 g CO2/km comb.
mpg: 6.6
Details

Super price

£25,249

£27,249

E4 7PX Greater London, London

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-1%

1 / 4

Used (2020) BMW 420 M Sport 190 HP | Good price

- 4 Series d [190] M Sport 2dr

2020
39,000 miles
Trim level: M Sport
2.0L Diesel
Coupe
Automatic
190 HP (139 kW)
CO2 emissions: 149 g CO2/km comb.
mpg: 5.7
Details

Good price

£16,290

£16,495

SY13TB

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M Sport

(2022) BMW 420 M Sport 184 HP

£24,704

Fair price

You save £596

YO304WR, North Yorkshire

154 g CO2/km comb. - 184 HP (135 kW) - 41.5 Mpg

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M Sport

(2023) BMW 420 M Sport 184 HP

£22,990

Fair price

You save £310

DL1 2LD Darlington, Durham

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

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M Sport

(2023) BMW 420 M Sport 184 HP

£30,862

Good price

You save £1,738

NE36 0BQ West Boldon, Tyne And Wear

154 g CO2/km comb. - 184 HP (135 kW) - 41.5 Mpg

Carwow

M Sport

(2021) BMW 420 M Sport 190 HP

£22,500

Fair price

You save £200

ME5 9QG Kent, Kent

122 g CO2/km comb. - 190 HP (139 kW) - 4.7 Mpg

New

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

- 4 Series Convertible i M Sport

2020
30,717 miles
Trim level: M Sport
2.0L Petrol
Cabriolet
Automatic
184 HP (135 kW)
CO2 emissions: 182 g CO2/km comb.
mpg: 8
Details

Good price

£17,758

E65LU

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-2%

1 / 4

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

- 4 Series Gran Coupe i M Sport

2021
44,912 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 169 g CO2/km comb.
mpg: 7.3
Details

Super price

£16,995

£17,495

LE167NW

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-2%

1 / 3

Used (2020) BMW 420 M Sport 190 HP | Super price

- 4 Series Convertible d [190] M

2020
50,277 miles
Trim level: M Sport
2.0L Diesel
Cabriolet
Automatic
190 HP (139 kW)
CO2 emissions: 156 g CO2/km comb.
mpg: 5.9
Details

Super price

£15,349

£15,722

E6 5LU Greater London, London

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1 / 4

Used (2020) BMW 420 M Sport 190 HP | Good price

- 4 Series Gran Coupe d [190]

2020
81,667 miles
Trim level: M Sport
2.0L Diesel
Coupe
Automatic
190 HP (139 kW)
CO2 emissions: 160 g CO2/km comb.
mpg: 6.1
Details

Good price

£12,499

IP256HW

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Availability verified

-42%

1 / 4

Used (2022) BMW 420 M Sport 190 HP | Good price

d M Sport Convertible

2022
53,135 miles
Trim level: M Sport
2.0L Diesel
Cabriolet
Automatic
190 HP (139 kW)
CO2 emissions: 129 g CO2/km comb.
mpg: 57.6
Details

Good price

£24,646

£42,980

WC1E 7DP Greater London, London

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Availability verified

-4%

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)
CO2 emissions: 154 g CO2/km comb.
mpg: 6.8
Details

Super price

£29,150

£30,500

CM1 3BH Essex, Essex

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Availability verified

-2%

1 / 4

Used (2019) BMW 420 M Sport 190 HP | Good price

- 4 Series d [190] M Sport 2dr

2019
81,500 miles
Trim level: M Sport
2.0L Diesel
Coupe
Manual
190 HP (139 kW)
CO2 emissions: 151 g CO2/km comb.
mpg: 5.8
Details

Good price

£11,190

£11,490

HU9 1DN Kingston Upon Hull, East Yorkshire

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1 / 4

Used (2023) BMW 420 M Sport 184 HP | Good price

- 4 Series i M Sport Pro Edition

2023
45,612 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 151 g CO2/km comb.
mpg: 6.6
Details

Good price

£24,299

£24,099

DE21 6BZ Derby, Derbyshire

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-4%

1 / 3

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

- 4 Series Gran Coupe i xDrive M

2021
48,021 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 178 g CO2/km comb.
mpg: 7.8
Details

Good price

£18,433

£19,292

E65LU

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-3%

1 / 3

Used (2020) BMW 420 M Sport 190 HP | Good price

- 4 Series Convertible d [190] M

2020
43,626 miles
Trim level: M Sport
2.0L Diesel
Cabriolet
Automatic
190 HP (139 kW)
CO2 emissions: 156 g CO2/km comb.
mpg: 5.9
Details

Good price

£16,636

£17,273

E6 5LU Greater London, London

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M Sport

(2023) BMW 420 M Sport 184 HP

£24,299

Good price

You save £2,301

DE21 6BZ Derby, Derbyshire

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

Carwow

M Sport

(2022) BMW 420 M Sport 190 HP

£24,646

Good price

You save £1,954

WC1E 7DP Greater London, London

129 g CO2/km comb. - 190 HP (139 kW) - 57.6 Mpg

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M Sport

(2025) BMW 420 M Sport 184 HP

£35,890

Super price

You save £3,410

CT2 7PX Kent, Kent

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

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M Sport

(2021) BMW 420 M Sport 184 HP

£20,649

Good price

You save £2,351

TD98PZ

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

1 / 4

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

- 4 Series Gran Coupe i M Sport

2021
36,933 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 169 g CO2/km comb.
mpg: 7.3
Details

Super price

£18,490

EN92BL

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-4%

1 / 3

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

- 4 Series Gran Coupe i M Sport

2021
41,151 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 169 g CO2/km comb.
mpg: 7.3
Details

Super price

£16,804

£17,687

E6 5LU Greater London, London

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-2%

1 / 1

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

- 4 Series Gran Coupe i M Sport

2021
49,156 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 169 g CO2/km comb.
mpg: 7.3
Details

Super price

£16,100

£16,500

RM20 3NL Purfleet-On-Thames, Essex

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1 / 4

Used (2020) BMW 420 M Sport 190 HP | Good price

- 4 Series d [190] M Sport 2dr

2020
62,767 miles
Trim level: M Sport
2.0L Diesel
Coupe
Automatic
190 HP (139 kW)
CO2 emissions: 149 g CO2/km comb.
mpg: 5.7
Details

Good price

£15,850

£15,995

WR9 7DZ Worcestershire, Worcestershire

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1 / 4

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

- 4 Series Gran Coupe i M Sport

2021
23,218 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 169 g CO2/km comb.
mpg: 7.3
Details

Good price

£20,649

TD98PZ

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M Sport

(2025) BMW 420 M Sport 184 HP

£37,950

Fair price

You save £1,150

TS18 3RB, Durham

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

Carwow

M Sport

(2025) BMW 420 M Sport 184 HP

£37,490

Fair price

Estimated price £36,896

SO53 3YU Cross Rise, Hampshire

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

Carwow

M Sport

(2020) BMW 420 M Sport 184 HP

£17,890

Fair price

Estimated price £17,466

NE8 3HL Tyne And Wear, Tyne And Wear

170 g CO2/km comb. - 184 HP (135 kW) - 7.4 Mpg

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M Sport

(2021) BMW 420 M Sport 184 HP

£18,490

Super price

You save £2,610

EN92BL

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

Showing 1 - 25 of 1,398 results

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See BMW 420

BMW 420 (1000+)