Should your next car be the impressive BMW 420?

BMW 420 offers fantastic driving comfort and its design has received numerous awards. At AutoUncle, we've assembled an impressive collection of 1,733 used BMW 420 cars in the UK gathered from numerous dealership websites and online marketplaces.

What should I pay for a used BMW 420?

A used BMW 420 costs between £8,950 for the cheapest variant and £43,789 for the most expensive model. The popular BMW 420 is being offered at different prices depending on primarily five factors: manufacturing year, engine size and performance, fuel efficiency of the car, vehicle mileage not to mention the equipment level of the car. For instance, a car that is newer and has fewer miles on the clock will typically command a higher price. In the same vein, models at the higher end, replete with luxurious features or more robust engines, generally come with a more substantial price tag than a used model with many kilometres on the odometer and in a simple equipment variant.

What equipment packages does the BMW 420 offer?

The BMW 420 presents a wide variety of trim configurations to cater to different driving tastes and requirements. The most popular ones are: BMW 420 M Sport : Right now you will find 1,574 cars for sale at an average price of £22,887 BMW 420 Sport Line : Here you will find 86 cars for sale at an average price of £12,438 BMW 420 Luxury Line : 29 cars for sale at an average price of £10,747 BMW 420 Comfort Edition : 28 cars for sale at an average price of £12,196 BMW 420 Performance : 3 cars for sale at an average price of £12,810 BMW 420 Impressive : 2 cars for sale at an average price of £9,872 When examining the market value of a used BMW 420, it's imperative to examine vehicles that have the same engines and features. Otherwise, you might draw an inaccurate conclusion about which car to purchase.

How many different fuel types can I choose from for the BMW 420?

The primary energy source for the BMW 420 is petrol. Compare fuel types for BMW 420: BMW 420 petrol : 908 cars currently available with an average price of £27,458 BMW 420 diesel : 802 cars currently available with an average price of £15,373 BMW 420 plug-in hybrid : Currently there is 23 cars available on AutoUncle with an average price of £28,998 We advocate for a careful review of your driving habits before you commit to a fuel type. Is your driving mainly in the city or on long stretches of open roads and motorways? What's your typical weekly driving distance? For short journeys, electric cars, plug-in hybrids or petrol cars are obvious choices. For longer daily commutes, a modern electric car is often suitable - especially if you can charge at home or at work. Diesel cars may still be relevant in some cases with very long journeys and lack of charging options. Consider that in many countries, cities have banned the entry of diesel engines with high emissions.

Does the BMW 420 have multiple body styles?

The BMW 420 is available in several body types, but the most popular version is coupe. The coupe as a body type prioritises style and sporty driving. Compared to a sedan or an SUV, the chassis tends to be tighter and stronger. This body type is mostly for people without children, who usually travel light. This style is often more expensive than equivalent sedan or hatchback sister models.

What is the price difference between different body types for BMW 420?

BMW 420 coupe : 1,212 cars - average price £21,709 BMW 420 cabriolet : 301 cars - average price £25,604 BMW 420 hatchback](https://www.autouncle.co.uk/en-gb/used-cars/BMW/420/b-hatchback): 207 cars - average price £17,408 BMW 420 sedan : 7 cars - average price £22,625

Which models are comparable to BMW 420?

While being particularly popular, the German BMW 420 has some competitors. Alternative cars to the BMW 420 Audi TT Mazda MX5 BMW Z4 The Audi TT is a strong alternative to the BMW 420. With an average sales price of £13,990 you'll currently discover a substantial selection of 1,042 of these cars available for purchase on AutoUncle. The Mazda MX5 is a strong option in this segment, with 689 cars currently for sale on AutoUncle and an average price of £14,695. The BMW Z4 comes in as the third most popular choice with an average sales price of £16,950 and 551 car for sale at the moment in the UK.

In pursuit of a more sustainable counterpart to the BMW 420?

Considering something greener than the BMW 420? Check out these electric alternatives from the same segment:: Porsche Taycan Ford Capri Porsche Taycan 4S Haven't found an electric car that resonates with you? Review our entire selection of electric cars here.

Which BMW 420 is cheapest?

Based on market data, the Basis is the cheapest variant with an average price of £5,995

Which BMW 420 variant is the most popular?

Based on market data, the M Sport is the most popular variant with 1381 cars currently for sale.

Which BMW 420 variant is best at keeping its market value?

Based on market data, the M Sport has held its market value the best over the past 12 months.

Page 2 of 61:

BMW 420 used • 1,490 cars price-checked by AutoUncle

Featured deals

Carwow

BMW 420 4 Series d MHT M Sport 2dr Step Auto

£25,799

Good price

You save £2,401

B65SU Birmingham, West Midlands

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

Carwow

BMW 420 - 4 Series d MHT M Sport 2dr Step Auto

£27,599

Fair price

You save £701

NP194SS

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

Carwow

BMW 420 d M Sport Coupe

£24,761

Fair price

You save £339

NE360BQ, Tyne and Wear

122 g CO2/km comb. - 190 HP (139 kW) - 60.1 Mpg

Carwow

BMW 420 - 4 Series Convertible i M Sport 2dr Step Auto

£30,350

Super price

You save £5,450

CM13BH Chelmsford, Essex

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

-4%

1 / 4

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

4 Series d [190] M Sport 2dr Auto

2020
36,204 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

£18,099

£18,999

DH32BQ Birtley, Durham

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-10%

1 / 4

Used (2022) BMW 420 Comfort Edition 190 HP | Good price

4 SERIES DIESEL CONVERTIBLE d MHT

2022
52,830 miles
Trim level: Comfort Edition
2.0L Diesel
Cabriolet
Automatic
190 HP (139 kW)
mpg: 4.9
CO2: 129 g CO2/km comb.
Details

Good price

£24,199

£26,999

CW73AL, Cheshire

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Availability verified

1 / 4

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

- 4 Series Convertible d [190] M

2020
35,220 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

£16,499

£16,599

CW73AL, Cheshire

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1 / 1

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

- 4 Series i M Sport 2dr Auto

2020
64,000 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

£13,850

£13,750

DE655FJ Hilton, Derbyshire

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Availability verified

-9%

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

Super price

£31,799

£35,249

WA89WZ, Cheshire

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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

Good price

£14,895

W1H7AB, London

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Availability verified

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)
mpg: 7.3
CO2: 169 g CO2/km comb.
Details

Super price

£16,750

£16,500

RM203NL Essex, Essex

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1 / 4

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

- 4 Series Convertible d [190] M

2020
113,173 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

£9,995

HX14JF, West Yorkshire

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Availability verified

-2%

1 / 4

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

- 4 Series Convertible d [190] M

2019
69,000 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

£14,730

£15,170

UB111FW, London

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Availability verified

-3%

1 / 4

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

- 4 Series i M Sport 2dr Auto

2020
60,000 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

£13,999

£14,499

EN89SE, Hertfordshire

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Featured deals

Carwow

BMW 420 - 4 Series Convertible i M Sport 2dr Step Auto

£30,900

Super price

You save £5,400

CM13BH Chelmsford, Essex

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

Carwow

BMW 420 4 Series d MHT M Sport 5dr Step Auto

£26,350

Fair price

Estimated price £26,283

WD33RT Watford, Hertfordshire

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

Carwow

BMW 420 4 Series d xDrive MHT M Sport 5dr Step Auto

£29,699

Fair price

Estimated price £28,793

EH151BT

138 g CO2/km comb. - 190 HP (139 kW) - 5.3 Mpg

Carwow

BMW 420 4 Series i xDrive M Sport 2dr Step Auto

£25,295

Fair price

You save £205

S802QD Hinckley, Nottinghamshire

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

-4%

1 / 3

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

- 4 Series Gran Coupe d [190] M

2019
104,499 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

£11,800

£12,347

E65LU, London

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Availability verified

1 / 4

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

- 4 Series i xDrive M Sport 2dr

2020
40,454 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
184 HP (135 kW)
mpg: 7.8
CO2: 179 g CO2/km comb.
Details

Super price

£14,550

£14,250

DE655FJ Hilton, Derbyshire

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Availability verified

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

Super price

£33,694

£33,993

SO533YU, Hampshire

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Availability verified

-5%

1 / 4

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

- 4 Series i M Sport 2dr Step

2025
0 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
184 HP (135 kW)
mpg: 6.3
CO2: 144 g CO2/km comb.
Details

Super price

£40,999

£43,499

B783HG Tamworth, Staffordshire

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Availability verified

-10%

1 / 4

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

4 Series i M Sport 2dr Auto

2020
53,048 miles
Trim level: M Sport
2.0L Petrol
Cabriolet
Automatic
184 HP (135 kW)
mpg: 8
CO2: 182 g CO2/km comb.
Details

Super price

£16,920

£18,980

PE46ZL, Cambridgeshire

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Availability verified

-2%

1 / 3

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

- 4 Series d [190] M Sport 2dr

2020
42,059 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

£14,650

£15,000

WD33RT Watford, Hertfordshire

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Availability verified

1 / 3

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

- 4 Series Gran Coupe i xDrive M

2021
60,000 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
184 HP (135 kW)
mpg: 7.8
CO2: 178 g CO2/km comb.
Details

Good price

£17,995

DE737HL, Derbyshire

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Availability verified

-2%

1 / 2

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

4 Series 2.0 d MHT M Sport Auto

2022
53,280 miles
Trim level: M Sport
2.0L Diesel
Coupe
Automatic
190 HP (139 kW)
mpg: 5
CO2: 131 g CO2/km comb.
Details

Super price

£23,495

£23,995

WV100AF Hinckley, West Midlands

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Availability verified

-9%

1 / 4

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

- 4 Series Convertible i M Sport

2025
23,282 miles
Trim level: M Sport
2.0L Petrol
Cabriolet
Automatic
184 HP (135 kW)
mpg: 6.8
CO2: 154 g CO2/km comb.
Details

Super price

£31,995

£35,490

CT27PX, Kent

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Availability verified

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

Good price

£46,009

BA228RT Gateshead, Somerset

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Featured deals

Carwow

BMW 420 4 SERIES DIESEL CONVERTIBLE d MHT M Sport 2dr Step Auto [ Comfort Package , Steering Wheel - Heated , M Sport Pro Package , Wind deflector ]

£24,199

Good price

You save £1,301

CW73AL, Cheshire

129 g CO2/km comb. - 190 HP (139 kW) - 4.9 Mpg

Carwow

BMW 420 4 Series D M SPORT

£23,500

Fair price

Estimated price £23,097

ME59QG, Kent

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

Carwow

BMW 420 4 SERIES DIESEL CONVERTIBLE d MHT M Sport 2dr Step Auto [ Comfort Package , Park assist pack , Wind Deflector , Bluetooth hands free facility with USB audio interface with audio streaming ]

£25,699

Fair price

Estimated price £25,319

CW73AL, Cheshire

129 g CO2/km comb. - 190 HP (139 kW) - 4.9 Mpg

Carwow

BMW 420 4 Series d MHT M Sport 2dr Step Auto

£27,950

Super price

You save £3,550

RH123ZG, West Sussex

129 g CO2/km comb. - 190 HP (139 kW) - 4.9 Mpg

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

£15,995

WR97GA Droitwich, Worcestershire

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Availability verified

1 / 3

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

- 4 Series Gran Coupe i xDrive M

2021
31,174 miles
Trim level: M Sport
2.0L Petrol
Coupe
Automatic
184 HP (135 kW)
mpg: 7.8
CO2: 178 g CO2/km comb.
Details

Super price

£17,650

£17,500

WD33RT Watford, Hertfordshire

View the car

Availability verified

-5%

1 / 4

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

- 4 Series Gran Coupe d [190] M

2020
80,800 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

£12,790

£13,490

TS66UR, North Yorkshire

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Availability verified

1 / 2

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

- 4 Series Gran Coupe d [190]

2020
90,000 miles
Trim level: M Sport
2.0L Diesel
Coupe
Automatic
190 HP (139 kW)
mpg: 6.1
CO2: 160 g CO2/km comb.
Details

Good price

£11,795

DE737HL, Derbyshire

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Availability verified

-6%

1 / 4

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

4 Series d MHT M Sport 2dr Step

2022
27,833 miles
Trim level: M Sport
2.0L Diesel
Coupe
Automatic
190 HP (139 kW)
mpg: 4.7
CO2: 122 g CO2/km comb.
Details

Good price

£25,799

£27,499

B65SU Birmingham, West Midlands

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Availability verified

Featured deals

Carwow

BMW 420 4 Series d MHT M Sport 2dr Step Auto

£24,350

Good price

You save £1,850

WD33RT Watford, Hertfordshire

129 g CO2/km comb. - 190 HP (139 kW) - 4.9 Mpg

Carwow

BMW 420 - 4 Series d xDrive MHT M Sport 2dr Step Auto

£23,697

Fair price

Estimated price £22,808

LN58NU Lincoln, Lincolnshire

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

Carwow

BMW 420 4 Series 2.0 d MHT M Sport Auto xDrive Euro 6 (s/s) 2dr REVERSE CAMERA HEATED SEATS Coupe

£23,495

Super price

You save £3,505

WV100AF Hinckley, West Midlands

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

Carwow

BMW 420 - 4 Series Gran Coupe d [190] M Sport 5dr Auto [Professional Media]

£18,845

Fair price

Estimated price £18,617

BL22BL Bolton, Manchester

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

Showing 26 - 50 of 1,502 results

All body types for BMW 420

Convertible

305 cars

Coupe

1,101 cars

Hatchback

72 cars

Saloon

4 cars

Page 2 of 61:

BMW 420 used • 1,490 cars price-checked by AutoUncle

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

Used (2022) BMW 420 Comfort Edition 190 HP | Good price

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

All body types for BMW 420

All regions for BMW 420

All fuel types for BMW 420

All gear types for BMW 420