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2026 BMW 420 • Compare 67 used cars with valuation

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Carwow

2025

(2025) BMW 420 M Sport 184 HP

£37,657

Fair price

You save £1,543

TS18 3RB, Durham

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

Carwow Leasing

2025

(2025) BMW 420 M Sport 184 HP

£45,514

Super price

You save £3,886

RH10 1TN West Sussex, West Sussex

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

Carwow

2025

(2025) BMW 420 M Sport 184 HP

£36,990

Fair price

Estimated price £36,896

SO53 3YU Cross Rise, Hampshire

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

Carwow

2025

(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

1 / 3

Used (2026) BMW 420 M Sport 184 HP

- 4 Series Gran Coupe i M Sport

2026
37,965 miles
Trim level: M Sport
Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 153 g CO2/km comb.
mpg: 6.6
Details

£24,900

Not evaluated

WD3 3RT Croxley Green, Hertfordshire

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1 / 4

New (2026) BMW 420 M Sport 184 HP

- 4 Series i M Sport 2dr Step

2026
0 miles
Trim level: M Sport
Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 144 g CO2/km comb.
mpg: 6.3
Details

£46,950

Not evaluated

NG72AX

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Availability verified

1 / 1

New (2026) BMW 420 M Sport 184 HP

- 4 Series Gran Coupe i M Sport

2026
0 miles
Trim level: M Sport
Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 155 g CO2/km comb.
mpg: 6.6
Details

£47,511

Not evaluated

HG3 1LG Pannal, North Yorkshire

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Availability verified

1 / 1

New (2026) BMW 420 M Sport 184 HP

- 4 Series Gran Coupe i M Sport

2026
0 miles
Trim level: M Sport
Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 155 g CO2/km comb.
mpg: 6.6
Details

£48,141

Not evaluated

IP31 1SX Fornham Saint Martin, Suffolk

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Carwow Leasing

2025

(2025) BMW 420 M Sport 184 HP

£46,286

Good price

You save £3,114

RH10 1TN West Sussex, West Sussex

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

Carwow Leasing

2025

(2025) BMW 420 M Sport 184 HP

£49,100

Fair price

You save £300

RH10 1TN West Sussex, West Sussex

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

Carwow

2025

(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 Leasing

2025

(2025) BMW 420 M Sport 184 HP

£48,357

Fair price

You save £1,043

OX28JP Oxfordshire, Oxfordshire

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

1 / 3

Used (2026) BMW 420 M Sport 184 HP

- 4 Series Gran Coupe i M Sport

2026
32,100 miles
Trim level: M Sport
Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 153 g CO2/km comb.
mpg: 6.6
Details

£27,995

Not evaluated

TQ47PT

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Availability verified

-2%

1 / 4

Used (2026) BMW 420 M Sport 184 HP

- 4 Series Convertible i M Sport

2026
4,238 miles
Trim level: M Sport
Petrol
Cabriolet
Automatic
184 HP (135 kW)
CO2 emissions: 154 g CO2/km comb.
mpg: 6.8
Details

£42,493

£43,490

Not evaluated

SO53 3YU Cross Rise, Hampshire

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1 / 2

Used (2026) BMW 420 M Sport 184 HP

- 4 Series i M Sport 2dr Step

2026
59,627 miles
Trim level: M Sport
Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 144 g CO2/km comb.
mpg: 6.3
Details

£23,990

Not evaluated

EX111RE

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Availability verified

-1%

1 / 4

Used (2026) BMW 420 M Sport 184 HP

- 4 Series i M Sport 2dr Step

2026
30,737 miles
Trim level: M Sport
Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 144 g CO2/km comb.
mpg: 6.3
Details

£25,990

£26,500

Not evaluated

HU9 1AT Kingston Upon Hull, East Yorkshire

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Availability verified

1 / 4

Used (2026) BMW 420 M Sport 184 HP

- 4 Series Gran Coupe i M Sport

2026
11,737 miles
Trim level: M Sport
Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 153 g CO2/km comb.
mpg: 6.6
Details

£38,490

£35,990

Not evaluated

SO53 3YU Cross Rise, Hampshire

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1 / 4

Used (2026) BMW 420 M Sport 184 HP

- 4 Series Gran Coupe i M Sport

2026
9,393 miles
Trim level: M Sport
Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 153 g CO2/km comb.
mpg: 6.6
Details

£37,490

£36,990

Not evaluated

SO53 3YU Cross Rise, Hampshire

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Carwow

2025

(2025) Audi A5 Sport 204 HP

£32,490

Super price

You save £4,310

SO533DH

155 g CO2/km comb. - 204 HP (150 kW) - 6.8 Mpg

Carwow

2025

(2025) BMW 220 M Sport 184 HP

£33,700

Fair price

You save £100

NE36 0BQ West Boldon, Tyne And Wear

146 g CO2/km comb. - 184 HP (135 kW) - 43.0 Mpg

Carwow Leasing

2025

(2025) BMW 220 M Sport 184 HP

£39,726

Fair price

Estimated price £39,595

OX28JP Oxfordshire, Oxfordshire

146 g CO2/km comb. - 184 HP (135 kW) - 6.4 Mpg

Carwow Leasing

2026

(2026) Audi A5 S-Line 150 HP

£46,160

Fair price

You save £840

BL2 1NN Greater Manchester, Manchester

157 g CO2/km comb. - 150 HP (110 kW) - 6.9 Mpg

1 / 4

Used (2026) BMW 420 M Sport 184 HP

- 4 Series Gran Coupe i M Sport

2026
5,182 miles
Trim level: M Sport
Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 153 g CO2/km comb.
mpg: 6.6
Details

£38,490

£36,490

Not evaluated

SO533YU

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Availability verified

1 / 1

New (2026) BMW 420 M Sport 184 HP

- 4 Series i M Sport 2dr Step

2026
10 miles
Trim level: M Sport
Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 144 g CO2/km comb.
mpg: 6.3
Details

£47,000

Not evaluated

SY14AQ

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Availability verified

1 / 1

New (2026) BMW 420 M Sport 184 HP

- 4 Series i M Sport 2dr Step

2026
0 miles
Trim level: M Sport
Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 144 g CO2/km comb.
mpg: 6.3
Details

£46,500

Not evaluated

S92RQ

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Availability verified

1 / 4

New (2026) BMW 420 M Sport 184 HP

- 4 Series i M Sport 2dr Step

2026
0 miles
Trim level: M Sport
Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 144 g CO2/km comb.
mpg: 6.3
Details

£47,500

Not evaluated

S92RQ

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New

1 / 4

Used (2026) BMW 420 M Sport 184 HP

- 4 Series i M Sport 2dr Step

2026
18,721 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 144 g CO2/km comb.
mpg: 6.3
Details

£27,299

Not evaluated

EH151BT

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Availability verified

1 / 4

Used (2026) BMW 420 M Sport 184 HP

- 4 Series Gran Coupe i M Sport

2026
20,017 miles
Trim level: M Sport
Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 153 g CO2/km comb.
mpg: 6.6
Details

£30,750

Not evaluated

CM1 3BH Essex, Essex

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Availability verified

1 / 4

Used (2026) BMW 420 M Sport 184 HP

- 4 Series Gran Coupe i M Sport

2026
10,589 miles
Trim level: M Sport
Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 153 g CO2/km comb.
mpg: 6.6
Details

£38,990

Not evaluated

SO533YU

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Availability verified

1 / 4

Used (2026) BMW 420 M Sport 184 HP

- 4 Series Gran Coupe i M Sport

2026
4,533 miles
Trim level: M Sport
Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 153 g CO2/km comb.
mpg: 6.6
Details

£39,990

Not evaluated

SO533YU

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Availability verified

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Carwow Leasing

2026

(2026) BMW 220 M Sport 170 HP

£36,950

Fair price

Estimated price £36,409

NG72AX

120 g CO2/km comb. - 170 HP (125 kW) - 5.2 Mpg

Carwow Leasing

2026

(2026) BMW 220 M Sport 184 HP

£41,117

Fair price

Estimated price £39,595

PE21 7PQ Lincolnshire, Lincolnshire

146 g CO2/km comb. - 184 HP (135 kW) - 6.4 Mpg

Carwow

2025

(2025) BMW 220 M Sport 184 HP

£33,990

Fair price

Estimated price £33,516

CT2 7PX Kent, Kent

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

Carwow Leasing

2025

(2025) Audi A5 S-Line 150 HP

£46,925

Fair price

You save £75

BH12 4QN Bournemouth, Christchurch And Poole, Dorset

157 g CO2/km comb. - 150 HP (110 kW) - 6.9 Mpg

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