2020 BMW 420 • Compare 111 used cars with valuation

Market overview: March-2026 Price Analysis: A used BMW 420 from 2020 currently costs between £10,495 and £22,479. On average, the mileage for this year stands at 58,146 miles. The depreciation and price trend over the last 12 months is -£2,460.

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Carwow

2020

(2020) BMW 420 M Sport 190 HP

£14,000

Super price

You save £2,900

B33 0LD West Midlands, West Midlands

149 g CO2/km comb. - 190 HP (139 kW) - 5.7 Mpg

Carwow

2020

(2020) BMW 420 M Sport 190 HP

£15,950

Good price

You save £1,650

GU27 3JG Fernhurst, West Sussex

156 g CO2/km comb. - 190 HP (139 kW) - 5.9 Mpg

Carwow

2020

(2020) BMW 420 M Sport 190 HP

£16,999

Fair price

You save £601

NE63 0YA Northumberland, Northumberland

158 g CO2/km comb. - 190 HP (139 kW) - 6.0 Mpg

Carwow

2020

(2020) BMW 420 M Sport 190 HP

£14,975

Good price

You save £2,225

PO22 9NG West Sussex, West Sussex

149 g CO2/km comb. - 190 HP (139 kW) - 5.7 Mpg

Price checked by AutoUncle

Super price

Good price

Fair price

A bit pricey

Expensive

-1%

1 / 4

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

- 4 Series d [190] xDrive M Sport

2020
72,082 miles
Trim level: M Sport
2.0L Diesel
Coupe
Automatic
190 HP (139 kW)
mpg: 6.0
CO2: 158 g CO2/km comb.
Details

Super price

£12,750

£12,950

DE65 5FJ Hilton, Derbyshire

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1 / 4

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

- 4 Series d [190] xDrive M Sport

2020
61,000 miles
Trim level: M Sport
2.0L Diesel
Coupe
Automatic
190 HP (139 kW)
mpg: 6.0
CO2: 158 g CO2/km comb.
Details

Good price

£14,850

£14,950

DE65 5FJ Hilton, Derbyshire

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-7%

1 / 4

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

- 4 Series Gran Coupe d [190] M

2020
96,875 miles
Trim level: M Sport
2.0L Diesel
Coupe
Automatic
190 HP (139 kW)
mpg: 5.8
CO2: 151 g CO2/km comb.
Details

Good price

£9,750

£10,495

E6 7FB Greater London, London

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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)
mpg: 5.7
CO2: 149 g CO2/km comb.
Details

Good price

£15,950

£15,995

WR9 7DZ Worcestershire, Worcestershire

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Carwow

2021

(2021) BMW 420 M Sport 184 HP

£17,650

Super price

You save £3,850

WD3 3RT Croxley Green, Hertfordshire

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

Carwow

2019

(2019) BMW 420 M Sport 184 HP

£19,621

Fair price

Estimated price £18,484

E6 5LU Greater London, London

182 g CO2/km comb. - 184 HP (135 kW) - 8.0 Mpg

Carwow

2019

(2019) BMW 420 M Sport 190 HP

£17,890

Fair price

Estimated price £16,829

NE8 3HL Tyne And Wear, Tyne And Wear

158 g CO2/km comb. - 190 HP (139 kW) - 6.0 Mpg

Carwow

2020

(2020) BMW 420 M Sport 190 HP

£14,850

Good price

You save £1,950

DE65 5FJ Hilton, Derbyshire

158 g CO2/km comb. - 190 HP (139 kW) - 6.0 Mpg

-4%

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)
mpg: 5.9
CO2: 156 g CO2/km comb.
Details

Super price

£14,990

£15,722

E6 5LU Greater London, London

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-3%

1 / 4

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

- 4 Series d [190] M Sport 2dr

2020
57,949 miles
Trim level: M Sport
2.0L Diesel
Coupe
Automatic
190 HP (139 kW)
mpg: 5.7
CO2: 149 g CO2/km comb.
Details

Super price

£14,000

£14,500

B33 0LD West Midlands, West Midlands

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-1%

1 / 3

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

- 4 Series i M Sport 2dr Auto

2020
60,375 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
184 HP (135 kW)
mpg: 7.3
CO2: 170 g CO2/km comb.
Details

Super price

£15,795

£15,995

BL1 3DE Greater Manchester, Manchester

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Availability verified

-1%

1 / 4

Used (2020) BMW 420 M Sport 184 HP | Good 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)
mpg: 7.8
CO2: 179 g CO2/km comb.
Details

Good price

£16,025

£16,295

W1H 7AB Greater London, London

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1 / 4

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

- 4 Series d [190] M Sport 2dr

2020
61,000 miles
Trim level: M Sport
2.0L Diesel
Coupe
Automatic
190 HP (139 kW)
mpg: 5.7
CO2: 149 g CO2/km comb.
Details

Good price

£14,975

PO22 9NG West Sussex, West Sussex

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-3%

1 / 3

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

- 4 Series d [190] M Sport 2dr

2020
58,500 miles
Trim level: M Sport
2.0L Diesel
Coupe
Automatic
190 HP (139 kW)
mpg: 5.7
CO2: 149 g CO2/km comb.
Details

Super price

£12,499

£12,999

NE63 0YA Northumberland, Northumberland

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Carwow

2020

(2020) BMW 420 M Sport 190 HP

£14,000

Super price

You save £3,400

N11 1GN Greater London, London

156 g CO2/km comb. - 190 HP (139 kW) - 5.9 Mpg

Carwow

2020

(2020) BMW 420 M Sport 190 HP

£15,950

Good price

You save £1,650

WR9 7DZ Worcestershire, Worcestershire

149 g CO2/km comb. - 190 HP (139 kW) - 5.7 Mpg

Carwow

2021

(2021) BMW 420 M Sport 184 HP

£16,817

Super price

You save £3,283

E6 5LU Greater London, London

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

Carwow

2020

(2020) BMW 420 M Sport 190 HP

£16,455

Good price

You save £1,845

E6 5LU Greater London, London

156 g CO2/km comb. - 190 HP (139 kW) - 5.9 Mpg

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

- 4 Series i M Sport 2dr Auto

2020
39,296 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
184 HP (135 kW)
mpg: 7.3
CO2: 170 g CO2/km comb.
Details

Good price

£15,420

BB1 3NU Lancashire, Lancashire

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-2%

1 / 3

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

- 4 Series Convertible i M Sport

2020
70,597 miles
Trim level: M Sport
2.0L Petrol
Cabriolet
Automatic
184 HP (135 kW)
mpg: 8.0
CO2: 182 g CO2/km comb.
Details

Super price

£12,499

£12,799

NE63 0YA Northumberland, Northumberland

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-3%

1 / 3

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

- 4 Series Convertible d [190] M

2020
51,896 miles
Trim level: M Sport
2.0L Diesel
Cabriolet
Automatic
190 HP (139 kW)
mpg: 5.9
CO2: 156 g CO2/km comb.
Details

Super price

£14,000

£14,550

N11 1GN Greater London, London

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Availability verified

-4%

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)
mpg: 5.7
CO2: 149 g CO2/km comb.
Details

Good price

£16,508

£17,253

E6 5LU Greater London, London

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Availability verified

-4%

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)
mpg: 5.9
CO2: 156 g CO2/km comb.
Details

Good price

£16,455

£17,273

E6 5LU Greater London, London

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Availability verified

1 / 3

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

- 4 Series Convertible d [190] M

2020
52,259 miles
Trim level: M Sport
2.0L Diesel
Cabriolet
Automatic
190 HP (139 kW)
mpg: 5.9
CO2: 156 g CO2/km comb.
Details

Good price

£15,200

WD3 3RT Croxley Green, Hertfordshire

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Availability verified

1 / 4

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

- 4 Series Convertible d [190] M

2020
55,500 miles
Trim level: M Sport
2.0L Diesel
Cabriolet
Automatic
190 HP (139 kW)
mpg: 5.9
CO2: 156 g CO2/km comb.
Details

Good price

£15,950

GU27 3JG Fernhurst, West Sussex

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Availability verified

1 / 2

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

- 4 Series d [190] M Sport 2dr

2020
74,150 miles
Trim level: M Sport
2.0L Diesel
Coupe
Automatic
190 HP (139 kW)
mpg: 5.7
CO2: 149 g CO2/km comb.
Details

Good price

£13,994

OL8 4PQ Greater Manchester, Manchester

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1 / 4

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

- 4 Series Gran Coupe d [190] M

2020
74,000 miles
Trim level: M Sport
2.0L Diesel
Coupe
Automatic
190 HP (139 kW)
mpg: 5.8
CO2: 151 g CO2/km comb.
Details

Super price

£12,495

EN9 2HU Nazeing, Essex

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1 / 3

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

Good price

£17,150

N11 1GN Greater London, London

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Carwow

2020

(2020) BMW 420 M Sport 184 HP

£17,849

Fair price

You save £851

DH3 2BQ Birtley, Durham

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

Carwow

2020

(2020) BMW 420 M Sport 184 HP

£17,697

Fair price

Estimated price £16,785

B33 0JJ West Midlands, West Midlands

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

Carwow

2019

(2019) BMW 420 M Sport 184 HP

£14,595

Fair price

You save £1,005

LE10 3DJ Leicestershire, Leicestershire

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

Carwow

2020

(2020) BMW 420 M Sport 190 HP

£15,900

Fair price

You save £100

BB1 5PF Blackburn With Darwen, Lancashire

151 g CO2/km comb. - 190 HP (139 kW) - 5.8 Mpg

-4%

1 / 4

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

4 Series d [190] M Sport 2dr Auto

2020
56,000 miles
Trim level: M Sport
2.0L Diesel
Cabriolet
Automatic
190 HP (139 kW)
mpg: 5.9
CO2: 156 g CO2/km comb.
Details

Good price

£18,195

£18,995

CM8 3NW Wickham Bishops, Essex

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1 / 4

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

- 4 Series Convertible d [190]

2020
46,653 miles
Trim level: Sport Line
2.0L Diesel
Cabriolet
Automatic
190 HP (139 kW)
mpg: 5.9
CO2: 161 g CO2/km comb.
Details

Good price

£13,895

£13,995

W5 5JN Greater London, London

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Availability verified

-1%

Used (2020) BMW 420 M Sport 184 HP | Super 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: 135 g CO2/km comb.
Details

Super price

£19,299

£19,499

CW7 3AL Cheshire West And Chester, Cheshire

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New

1 / 1

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

- 4 Series d [190] M Sport 2dr

2020
95,000 miles
Trim level: M Sport
2.0L Diesel
Coupe
Automatic
190 HP (139 kW)
mpg: 5.7
CO2: 149 g CO2/km comb.
Details

Good price

£9,990

DL149PB

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1 / 1

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

- 4 Series Gran Coupe d [190] M

2020
67,540 miles
Trim level: M Sport
2.0L Diesel
Coupe
Automatic
190 HP (139 kW)
mpg: 5.8
CO2: 151 g CO2/km comb.
Details

Good price

£13,999

SA18QB

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Carwow

2019

(2019) BMW 420 M Sport 184 HP

£16,481

Fair price

You save £719

RM13 8RH Greater London, London

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

Carwow

2021

(2021) BMW 420 M Sport 184 HP

£16,995

Good price

You save £2,305

W1H7AB

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

Carwow

2020

(2020) BMW 420 M Sport 184 HP

£15,795

Super price

You save £2,505

BL1 3DE Greater Manchester, Manchester

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

Carwow

2021

(2021) BMW 420 M Sport 184 HP

£16,400

Super price

You save £2,800

RM20 3NL Purfleet-On-Thames, Essex

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

Showing 1 - 25 of 111 results

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BMW 420 (1000+)