BMW 420 Gran Coupé (petrol) • 187 cars with Valuation

Market overview: Petrol BMW 420 Gran Coupé (June-2026): There are currently 187 used petrol BMW 420 Gran Coupé cars for sale. Prices range from £16,250 to £40,555, with a median price of £34,647. AutoUncle has identified 25 cars as being offered below market price. The typical selling time for a petrol BMW 420 Gran Coupé is approximately 37 days, and 68.4% of the listings have recently been reduced in price (Source: AutoUncle market data, June-2026).

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Used Audi A5 Sport 204 HP (150 kW) 2025 Sedan

(2025) Audi A5 Sport 204 HP

Super price

You save £5,610

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

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New BMW 420 M Sport 184 HP (135 kW) 2026 Coupe

(2026) BMW 420 M Sport 184 HP

Super price

You save £5,032

MK150DQ Milton Keynes, Buckinghamshire

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

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New Audi A5 Sport 150 HP (110 kW) 2026 Sedan

(2026) Audi A5 Sport 150 HP

Super price

You save £3,671

MK15 0DQ Milton Keynes, Buckinghamshire

155 g CO2/km comb. - 150 HP (110 kW) - 6.8 Mpg

Carwow

Used BMW 420 M Sport 184 HP (135 kW) 2023 Green Coupe

(2023) BMW 420 M Sport 184 HP

Fair price

YO304WR, North Yorkshire

154 g CO2/km comb. - 184 HP (135 kW) - 40.0 Mpg

Price checked by AutoUncle

Super price

Good price

Fair price

A bit pricey

Expensive

-7%

1 / 4

Used (2025) BMW 420 Gran Coupé M Sport 181 HP | Good price

4 Series Gran Coupe i M Sport 2.0

2025
8,607 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
181 HP (133 kW)
CO2 emissions: 155 g CO2/km comb.
41.5 mpg
Details

Good price

£34,950

£37,950

Bmw.co.uk

OX2 8JP Oxfordshire, Oxfordshire

-13%

1 / 4

Used (2025) BMW 420 Gran Coupé M Sport 181 HP | Good price

4 Series Gran Coupe i M Sport 2.0

2025
8,244 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
181 HP (133 kW)
CO2 emissions: 155 g CO2/km comb.
41.5 mpg
Details

Good price

£34,599

£39,995

Bmw.co.uk

ST4 4GU Stoke-On-Trent, Staffordshire

-8%

1 / 4

Used (2023) BMW 420 Gran Coupé M Sport 181 HP | Super price

4 Series Gran Coupe i M Sport 2.0

2023
37,985 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
181 HP (133 kW)
CO2 emissions: 156 g CO2/km comb.
40.9 mpg
Details

Super price

£25,499

£27,999

Bmw.co.uk

ST4 4GU Stoke-On-Trent, Staffordshire

-2%

1 / 3

Used (2025) BMW 420 Gran Coupé M Sport 181 HP | Good price

4 Series Gran Coupe i M Sport 2.0

2025
10,282 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
181 HP (133 kW)
CO2 emissions: 155 g CO2/km comb.
41.5 mpg
Details

Good price

£34,999

£35,999

Bmw.co.uk

SK9 3PB Handforth, Cheshire

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New Audi A5 Sport 299 HP (219 kW) 2026 Sedan

(2026) Audi A5 Sport 299 HP

Super price

You save £4,810

CW1 Cheshire East, Cheshire

47 g CO2/km comb. - 299 HP (219 kW) - 2.1 Mpg

Carwow

Used BMW 420 M Sport 184 HP (135 kW) 2025 Red Cabriolet

(2025) BMW 420 M Sport 184 HP

Fair price

Estimated price £41,701

WC1E 7DP Greater London, London

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

Carwow Leasing

New Audi A5 Sport 150 HP (110 kW) 2026 Estate

(2026) Audi A5 Sport 150 HP

Good price

You save £1,750

155 g CO2/km comb. - 150 HP (110 kW) - 6.8 Mpg

Carwow Leasing

New BMW 420 M Sport 184 HP (135 kW) 2026 Coupe

(2026) BMW 420 M Sport 184 HP

Super price

You save £5,032

TN2 3UE Kent, Kent

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

-5%

1 / 4

Used (2023) BMW 420 Gran Coupé M Sport 181 HP | Good price

4 Series Gran Coupe i M Sport 2.0

2023
24,405 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
181 HP (133 kW)
CO2 emissions: 154 g CO2/km comb.
41.5 mpg
Details

Good price

£27,495

£28,995

Bmw.co.uk

EH15 1EB Edinburgh, Edinburgh

-33%

1 / 4

Used (2023) BMW 420 Gran Coupé M Sport 192 HP | Good price

4 Series Gran Coupe i M Sport 2.0

Mar 2023
27,063 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
192 HP (141 kW)
CO2 emissions: 156 g CO2/km comb.
41.5 mpg
Details

Good price

£28,995

£43,495

Bmw.co.uk

BT63 Armagh City, Banbridge And Craigavon

-7%

1 / 4

Used (2025) BMW 420 Gran Coupé M Sport 181 HP | Super price

4 Series Gran Coupe i M Sport 2.0

2025
6,679 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
181 HP (133 kW)
CO2 emissions: 155 g CO2/km comb.
41.5 mpg
Details

Super price

£33,795

£36,495

Bmw.co.uk

TN24 0GA Kent, Kent

-6%

1 / 3

Used (2025) BMW 420 Gran Coupé M Sport 181 HP | Good price

4 Series Gran Coupe i M Sport 2.0

2025
10,923 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
181 HP (133 kW)
CO2 emissions: 156 g CO2/km comb.
40.9 mpg
Details

Good price

£34,899

£37,499

Bmw.co.uk

LL31 9PL Conwy, Clwyd

-26%

1 / 4

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

i M Sport

Mar 2020
45,716 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
184 HP (135 kW)
CO2 emissions: 135 g CO2/km comb.
37.7 mpg
Details

Good price

£19,000

£25,750

Bmw.co.uk

IG10 3UE Essex, Essex

-6%

1 / 4

Used (2025) BMW 420 Gran Coupé M Sport 181 HP | Good price

4 Series Gran Coupe i M Sport 2.0

2025
5,165 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
181 HP (133 kW)
CO2 emissions: 155 g CO2/km comb.
41.5 mpg
Details

Good price

£34,734

£36,999

Bmw.co.uk

DN35 Grimsby, Lincolnshire

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Used Audi A5 S-Line 150 HP (110 kW) 2026 Sedan

(2026) Audi A5 S-Line 150 HP

Super price

You save £6,210

154 g CO2/km comb. - 150 HP (110 kW) - 6.8 Mpg

Carwow Leasing

New Audi A5 Sport 150 HP (110 kW) 2025 Sedan

(2025) Audi A5 Sport 150 HP

Good price

You save £3,040

CF35 Pencoed, West Glamorgan

155 g CO2/km comb. - 150 HP (110 kW) - 6.8 Mpg

Carwow

Used Audi A5 S-Line 150 HP (110 kW) 2025 Blue Sedan

(2025) Audi A5 S-Line 150 HP

Fair price

WC1E 7DP Greater London, London

154 g CO2/km comb. - 150 HP (110 kW) - 6.8 Mpg

Carwow

Used Audi A5 S-Line 299 HP (219 kW) 2026 Estate

(2026) Audi A5 S-Line 299 HP

Fair price

You save £1,400

CM1 3BH Essex, Essex

50 g CO2/km comb. - 299 HP (219 kW) - 2.2 Mpg

-3%

1 / 4

Used (2023) BMW 420 Gran Coupé M Sport 181 HP | Good price

4 Series Gran Coupe i M Sport 2.0

2023
20,290 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
181 HP (133 kW)
CO2 emissions: 154 g CO2/km comb.
41.5 mpg
Details

Good price

£27,995

£28,995

Motors.co.uk

DA14 5BG Sidcup, London

-29%

1 / 4

Used (2022) BMW 420 Gran Coupé M Sport 192 HP | Good price

4 Series Gran Coupe i M Sport 2.0

2022
22,802 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
192 HP (141 kW)
CO2 emissions: 156 g CO2/km comb.
40.9 mpg
Details

Good price

£26,998

£38,495

Bmw.co.uk

KA12 8BZ North Ayrshire Council, Ayrshire And Arran

-2%

1 / 3

Used (2025) BMW 420 Gran Coupé M Sport 181 HP | Good price

4 Series Gran Coupe i M Sport 2.0

2025
6,898 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
181 HP (133 kW)
CO2 emissions: 153 g CO2/km comb.
42.2 mpg
Details

Good price

£34,999

£35,999

Bmw.co.uk

CH1 4LS Chester, Cheshire

1 / 4

Used (2026) BMW 420 Gran Coupé M Sport 181 HP | Good price

4 Series Gran Coupe i M Sport 2.0

2026
5,297 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
181 HP (133 kW)
CO2 emissions: 153 g CO2/km comb.
41.5 mpg
Details

Good price

£36,480

Bmw.co.uk

CO4 9TD Essex, Essex

-31%

1 / 4

Used (2019) BMW 420 Gran Coupé M Sport 181 HP | Good price

4 Series Gran Coupe i M Sport 2.0

2019
31,859 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
181 HP (133 kW)
CO2 emissions: 139 g CO2/km comb.
35.8 mpg
Details

Good price

£18,333

£26,947

Bmw.co.uk

RH10 1TN West Sussex, West Sussex

-19%

1 / 4

Used (2025) BMW 420 Gran Coupé M Sport 181 HP | Good price

4 Series Gran Coupe i M Sport 2.0

2025
4,298 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
181 HP (133 kW)
CO2 emissions: 154 g CO2/km comb.
41.5 mpg
Details

Good price

£34,695

£42,997

Bmw.co.uk

DE21 Derby, Derbyshire

-13%

1 / 4

Used (2025) BMW 420 Gran Coupé M Sport 181 HP | Good price

4 Series Gran Coupe i M Sport 2.0

2025
9,499 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
181 HP (133 kW)
CO2 emissions: 153 g CO2/km comb.
42.2 mpg
Details

Good price

£33,898

£38,999

Bmw.co.uk

EH28 8TH Edinburgh, Edinburgh

-9%

1 / 4

Used (2025) BMW 420 Gran Coupé M Sport 181 HP | Good price

4 Series Gran Coupe i M Sport 2.0

2025
6,977 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
181 HP (133 kW)
CO2 emissions: 154 g CO2/km comb.
41.5 mpg
Details

Good price

£34,495

£37,995

Bmw.co.uk

TN24 0GA Kent, Kent

-4%

1 / 4

Used (2023) BMW 420 Gran Coupé M Sport 181 HP | Good price

4 Series Gran Coupe i M Sport 2.0

2023
17,765 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
181 HP (133 kW)
CO2 emissions: 154 g CO2/km comb.
41.5 mpg
Details

Good price

£27,770

£28,990

Bmw.co.uk

W1K 7TT Greater London, London

-13%

1 / 4

Used (2023) BMW 420 Gran Coupé M Sport 181 HP | Good price

4 Series Gran Coupe i M Sport 2.0

2023
11,750 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
181 HP (133 kW)
CO2 emissions: 154 g CO2/km comb.
41.5 mpg
Details

Good price

£27,999

£32,250

Bmw.co.uk

CM2 5PG Springfield, Essex

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New BMW 420 M Sport 184 HP (135 kW) 2026 Coupe

(2026) BMW 420 M Sport 184 HP

Super price

You save £5,465

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

Carwow

Used Audi A5 S-Line 150 HP (110 kW) 2026 Sedan

(2026) Audi A5 S-Line 150 HP

Good price

You save £3,110

RH107ZJ, West Sussex

154 g CO2/km comb. - 150 HP (110 kW) - 6.8 Mpg

Carwow

Used BMW 420 M Sport 192 HP (141 kW) 2023 White Coupe

(2023) BMW 420 M Sport 192 HP

Super price

You save £4,215

NE36 0BQ West Boldon, Tyne And Wear

159 g CO2/km comb. - 192 HP (141 kW) - 40.4 Mpg

Carwow

Used Audi A5 S-Line 299 HP (219 kW) 2026 Sedan

(2026) Audi A5 S-Line 299 HP

Fair price

You save £1,300

CM1 3BH Essex, Essex

47 g CO2/km comb. - 299 HP (219 kW) - 2.1 Mpg

-1%

1 / 4

Used (2023) BMW 420 Gran Coupé M Sport 181 HP | Super price

4 Series Gran Coupe i M Sport 2.0

2023
13,696 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
181 HP (133 kW)
CO2 emissions: 156 g CO2/km comb.
40.9 mpg
Details

Super price

£28,485

£28,985

Bmw.co.uk

L3 7HT Merseyside, Merseyside

-20%

1 / 4

Used (2024) BMW 420 Gran Coupé M Sport 181 HP | Good price

4 Series Gran Coupe i M Sport 2.0

2024
15,527 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
181 HP (133 kW)
CO2 emissions: 156 g CO2/km comb.
41.5 mpg
Details

Good price

£31,999

£40,310

Bmw.co.uk

CW1 6XH Cheshire East, Cheshire

-17%

1 / 4

Used (2025) BMW 420 Gran Coupé M Sport 181 HP | Good price

4 Series Gran Coupe i M Sport 2.0

2025
13,598 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
181 HP (133 kW)
CO2 emissions: 153 g CO2/km comb.
42.2 mpg
Details

Good price

£33,950

£40,995

Bmw.co.uk

ME20 7XB Quarry Wood, Kent

1 / 4

Used (2019) BMW 420 Gran Coupé M Sport | Good price

4 Series 2.0 I M Sport Auto

2019
40,100 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
Details

Good price

£15,995

Motors.co.uk

SP8 5RJ West Stour, Dorset

-14%

1 / 4

Used (2025) BMW 420 Gran Coupé M Sport 181 HP | Good price

4 Series Gran Coupe i M Sport 2.0

2025
12,950 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
181 HP (133 kW)
CO2 emissions: 154 g CO2/km comb.
41.5 mpg
Details

Good price

£35,000

£41,000

Bmw.co.uk

SY1 4AQ Shropshire, Shropshire

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New BMW 420 M Sport 184 HP (135 kW) 2026 Coupe

(2026) BMW 420 M Sport 184 HP

Fair price

You save £1,629

GU1 1RD Surrey, Surrey

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

Carwow Leasing

New BMW 420 M Sport 184 HP (135 kW) 2026 Coupe

(2026) BMW 420 M Sport 184 HP

Fair price

Estimated price £48,610

PE21 7PQ Lincolnshire, Lincolnshire

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

Carwow Leasing

New Audi A5 S-Line 150 HP (110 kW) 2026 Estate

(2026) Audi A5 S-Line 150 HP

Fair price

Estimated price £47,190

SG5 1RQ Hertfordshire, Hertfordshire

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

Carwow Leasing

New BMW 420 M Sport 184 HP (135 kW) 2026 Coupe

(2026) BMW 420 M Sport 184 HP

Good price

You save £2,352

ME20 7XB Quarry Wood, Kent

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

Showing 1 - 25 of 181 results

Price checked by AutoUncle

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BMW 420 Gran Coupé (234)