BMW 420 Gran Coupé used • 306 cars price-checked by AutoUncle

Market overviewUsed BMW 420 Gran Coupé prices typically range from £16,500 to £41,999, averaging £32,994 (according to fresh market data from December). The most popular BMW 420 Gran Coupé variants right now are M Sport, Sport Line, Luxury Line. We have identified 38 cars priced below the market. The average selling time for used BMW 420 Gran Coupé is currently 39 days.

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Super price

Good price

Fair price

A bit pricey

Expensive

-6%
1 / 3

Used (2022) BMW 420 Gran Coupé M Sport 181 HP | Good price

4 Series Gran Coupe i M Sport 2.0

  • 2022
  • 22,736 miles
  • Trim levelM Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 181 HP (133 kW)
  • mpg41.5
  • CO2154 g CO2/km comb.
  • Details
autouncle-certified

Good price

£26,999
£28,999
Dealer
WA2 8HY Warrington, Cheshire
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Availability verified
-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
  • 2,500 miles
  • Trim levelM Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 181 HP (133 kW)
  • mpg41.5
  • CO2155 g CO2/km comb.
  • Details
autouncle-certified

Good price

£34,475
£42,995
Dealer
WD6 2BT Borehamwood, Hertfordshire
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Availability verified
-10%
1 / 4

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

4 Series Gran Coupe i M Sport 2.0

  • 2024
  • 11,131 miles
  • Trim levelM Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 181 HP (133 kW)
  • mpg41.5
  • CO2154 g CO2/km comb.
  • Details
autouncle-certified

Good price

£31,423
£34,990
Dealer
DE21 4RZ Derby, Derbyshire
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Availability verified
-27%

Used (2020) BMW 420 Gran Coupé M Sport 181 HP | Good price

4 Series Gran Coupe i M Sport 2.0

  • Mar 2020
  • 40,625 miles
  • Trim levelM Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 181 HP (133 kW)
  • mpg37.7
  • CO2135 g CO2/km comb.
  • Details
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Good price

£17,790
£24,690
Dealer
BL3 2NB Bolton, Manchester
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Availability verified
-16%
1 / 3

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

4 Series Gran Coupe i M Sport 2.0

  • 2025
  • 3,985 miles
  • Trim levelM Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 181 HP (133 kW)
  • mpg42.2
  • CO2153 g CO2/km comb.
  • Details
autouncle-certified

Good price

£33,490
£39,995
Dealer
ME20 7UB Aylesford, Kent
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Availability verified
-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
  • 4,793 miles
  • Trim levelM Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 181 HP (133 kW)
  • mpg41.5
  • CO2155 g CO2/km comb.
  • Details
autouncle-certified

Good price

£34,475
£42,795
Dealer
WD6 2BT Borehamwood, Hertfordshire
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Availability verified
-3%
1 / 4

Used (2023) BMW 420 Gran Coupé M Sport 187 HP | Good price

4 Series Gran Coupe d M Sport Pro

  • 2023
  • 44,799 miles
  • Trim levelM Sport
  • 2.0L Diesel
  • Coupe
  • Automatic
  • 187 HP (137 kW)
  • mpg56.5
  • CO2131 g CO2/km comb.
  • Details
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Good price

£28,663
£29,652
Dealer
SE18 6SR London, London
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Availability verified
-37%
1 / 4

Used (2022) BMW 420 Gran Coupé M Sport 187 HP | Good price

d M Sport

  • 2022
  • 48,845 miles
  • Trim levelM Sport
  • 2.0L Diesel
  • Coupe
  • Automatic
  • 187 HP (137 kW)
  • mpg56.5
  • CO2131 g CO2/km comb.
  • Details
autouncle-certified

Good price

£26,727
£43,000
Dealer
PE4 5HW Peterborough, Cambridgeshire
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Availability verified
1 / 4

Used (2022) BMW 420 Gran Coupé M Sport 187 HP | Good price

4 Series Gran Coupe d M Sport Pro

  • 2022
  • 6,437 miles
  • Trim levelM Sport
  • 2.0L Diesel
  • Coupe
  • Automatic
  • 187 HP (137 kW)
  • mpg56.5
  • CO2131 g CO2/km comb.
  • Details
autouncle-certified

Good price

£31,750
£31,736
Dealer
EN1 1SW Enfield, London
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Availability verified
-7%
1 / 4

Used (2022) BMW 420 Gran Coupé M Sport 181 HP | Good price

4 Series Gran Coupe i M Sport 2.0

  • 2022
  • 31,455 miles
  • Trim levelM Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 181 HP (133 kW)
  • mpg41.5
  • CO2154 g CO2/km comb.
  • Details
autouncle-certified

Good price

£26,199
£28,399
Dealer
ST4 4GU Stoke on Trent, Staffordshire
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Availability verified
-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
  • 5,788 miles
  • Trim levelM Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 181 HP (133 kW)
  • mpg40.9
  • CO2156 g CO2/km comb.
  • Details
autouncle-certified

Good price

£34,000
£39,838
Dealer
DH1 1HP Durham, Durham
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Availability verified
-4%
1 / 4

Used (2022) BMW 420 Gran Coupé M Sport 181 HP | Good price

4 Series Gran Coupe i M Sport 2.0

  • 2022
  • 33,194 miles
  • Trim levelM Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 181 HP (133 kW)
  • mpg40.9
  • CO2156 g CO2/km comb.
  • Details
autouncle-certified

Good price

£26,490
£27,795
Dealer
NE28 9ND Wallsend, Tyne and Wear
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Availability verified
-21%
1 / 4

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

4 Series Gran Coupe i M Sport 2.0

  • 2023
  • 31,607 miles
  • Trim levelM Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 181 HP (133 kW)
  • mpg41.5
  • CO2154 g CO2/km comb.
  • Details
autouncle-certified

Good price

£27,490
£34,950
Dealer
PL6 8LD Plymouth, Devon
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Availability verified
-7%
1 / 4

Used (2022) BMW 420 Gran Coupé M Sport 181 HP | Good price

4 Series Gran Coupe i M Sport 2.0

  • 2022
  • 23,826 miles
  • Trim levelM Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 181 HP (133 kW)
  • mpg41.5
  • CO2154 g CO2/km comb.
  • Details
autouncle-certified

Good price

£25,930
£28,169
Dealer
RH10 1TN Crawley, West Sussex
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Availability verified
-25%
1 / 4

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

i M Sport

  • Mar 2019
  • 50,593 miles
  • Trim levelM Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 181 HP (133 kW)
  • mpg37.2
  • CO2139 g CO2/km comb.
  • Details
autouncle-certified

Good price

£16,099
£21,499
Dealer
ST4 4GU Stoke on Trent, Staffordshire
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Availability verified
-11%
1 / 3

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

4 Series Gran Coupe i M Sport 2.0

  • 2023
  • 16,405 miles
  • Trim levelM Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 181 HP (133 kW)
  • mpg41.5
  • CO2154 g CO2/km comb.
  • Details
autouncle-certified

Good price

£28,999
£32,800
Dealer
RH10 1TN Crawley, West Sussex
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Availability verified
-22%
1 / 4

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

4 Series Gran Coupe i M Sport 2.0

  • 2025
  • 3,395 miles
  • Trim levelM Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 181 HP (133 kW)
  • mpg42.2
  • CO2153 g CO2/km comb.
  • Details
autouncle-certified

Good price

£34,199
£43,899
Dealer
ST4 4GU Stoke on Trent, Staffordshire
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Availability verified
-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
  • 3,855 miles
  • Trim levelM Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 181 HP (133 kW)
  • mpg42.2
  • CO2153 g CO2/km comb.
  • Details
autouncle-certified

Good price

£33,799
£35,999
Dealer
SK9 3PB Wilmslow, Cheshire
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Availability verified
-26%
1 / 3

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

4 Series Gran Coupe i M Sport 2.0

  • 2023
  • 12,407 miles
  • Trim levelM Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 192 HP (141 kW)
  • mpg40.9
  • CO2156 g CO2/km comb.
  • Details
autouncle-certified

Good price

£30,790
£41,950
Dealer
ME20 7UB Aylesford, Kent
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Availability verified
-5%
1 / 4

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

4 Series Gran Coupe i M Sport 2.0

  • 2024
  • 28,104 miles
  • Trim levelM Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 181 HP (133 kW)
  • mpg40.9
  • CO2156 g CO2/km comb.
  • Details
autouncle-certified

Good price

£30,748
£32,648
Dealer
NE36 0BQ West Boldon, Tyne and Wear
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Availability verified
-10%
1 / 4

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

4 Series Gran Coupe i M Sport 2.0

  • 2023
  • 20,288 miles
  • Trim levelM Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 181 HP (133 kW)
  • mpg41.5
  • CO2154 g CO2/km comb.
  • Details
autouncle-certified

Super price

£27,500
£30,750
Dealer
LE19 1UY Leicester, Leicestershire
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Availability verified
-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
  • 4,631 miles
  • Trim levelM Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 181 HP (133 kW)
  • mpg41.5
  • CO2155 g CO2/km comb.
  • Details
autouncle-certified

Good price

£34,793
£41,993
Dealer
MK41 0GL Bedford, Bedfordshire
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Availability verified
-23%
1 / 4

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

4 Series Gran Coupe i M Sport 2.0

  • 2025
  • 3,766 miles
  • Trim levelM Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 181 HP (133 kW)
  • mpg41.5
  • CO2155 g CO2/km comb.
  • Details
autouncle-certified

Good price

£33,880
£44,295
Dealer
CM2 5PG Chelmsford, Essex
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Availability verified
-10%
1 / 4

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

4 Series Gran Coupe i M Sport 2.0

  • 2025
  • 4,414 miles
  • Trim levelM Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 181 HP (133 kW)
  • mpg41.5
  • CO2155 g CO2/km comb.
  • Details
autouncle-certified

Good price

£34,450
£38,626
Dealer
EN1 1SW Enfield, London
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Availability verified
-5%
1 / 4

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

4 Series Gran Coupe i M Sport 2.0

  • 2025
  • 2,500 miles
  • Trim levelM Sport
  • 2.0L Petrol
  • Coupe
  • Automatic
  • 181 HP (133 kW)
  • mpg40.9
  • CO2156 g CO2/km comb.
  • Details
autouncle-certified

Good price

£35,099
£36,999
Dealer
ST17 4PQ Stafford, Staffordshire
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Showing 1 - 25 of 303 results

How much does the BMW 420 Gran Coupé depreciate?

Used BMW 420 Gran Coupé

A used BMW 420 Gran Coupé (2025) model loses about £350 per month in value.


Factors that affect the depreciation of a BMW 420 Gran Coupé:
- Mileage driven
- Maintenance
- Service history


Depreciation is an important part of calculating the total cost of owning a BMW 420 Gran Coupé. In addition to the monthly depreciation of £350, you should also factor in fuel costs, road tax, insurance and maintenance (including tyres and car washes) to get the full monthly cost.

How much does a used BMW 420 Gran Coupé cost? Prices, ratings and depreciation by model year

How much does a used BMW 420 Gran Coupé cost? Prices, ratings and depreciation by model year

Model year

Price range*

Avg. Price

Depreciation
(12 mth.)

Cars for sale

2025 BMW 420 Gran Coupé

£34,199 - £44,490£38,397-£4,200148

2024 BMW 420 Gran Coupé

£31,423 - £40,995£35,637-£2,24028

2023 BMW 420 Gran Coupé

£27,500 - £34,290£31,507-£5,26041

2022 BMW 420 Gran Coupé

£25,930 - £31,898£28,737-£2,32048

2021 BMW 420 Gran Coupé

£17,557 - £31,930£24,484-11

2020 BMW 420 Gran Coupé

£16,500 - £22,695£19,585+£1,860< 10

2019 BMW 420 Gran Coupé

£12,495 - £21,497£17,653-£1,02012

2018 BMW 420 Gran Coupé

£11,995 - £16,850£14,522-£2,560< 10

2016 BMW 420 Gran Coupé

£7,290 - £11,670£9,507-£2,320< 10

*The 'Price range' column shows the prices at the 5th and 95th percentiles of cars in the current market

The data is based on the cars currently listed on AutoUncle

Last updated: 18 December 2025

Comparison of BMW 420 Gran Coupé variants and prices

Below you can compare prices and depreciation for the 2 most popular BMW 420 Gran Coupé variants. The table is updated daily with data from the market in United Kingdom.

Comparison of BMW 420 Gran Coupé variants and prices

Variant

Price range*

Avg. Price

Depreciation
(12 mth.)

Cars for sale

🏆 The most popular

BMW 420 Gran Coupé M Sport

£17,790 - £41,999£33,357+£2,840301
💰 The budget choice

BMW 420 Gran Coupé Sport Line

£10,800 - £12,995£12,066-< 10

*The 'Price range' column shows the prices at the 5th and 95th percentiles of cars in the current market

The data is based on the cars currently listed on AutoUncle

Last updated: 18 December 2025

Which variant should you choose?

💰 The budget choice

The Sport Line is the cheapest entry point with an average price of £12,066.

Accuracy will improve as more cars from this variant become available

🏆 The most popular

There are the most M Sport for sale right now (301), which gives you the most options to choose from.

📈 The best value

The M Sport has held its price stable with minimal loss in value over the past year (+£2,840).

BMW 420 Gran Coupé (model year 2025) - Price development for the last 7 months and price projection for the next 6 months (May 2025 - May 2026)

Monthly price data with average prices and price ranges

Month

Average market price

Lowest market price

Highest market price

Calculation method

2025 - May
£42,920
£41,380£44,460
Estimate
2025 - June
£42,540
£40,900£44,200
Estimate
2025 - July
£41,900
£40,380£43,440
Estimate
2025 - August
£41,180
£39,860£42,520
Estimate
2025 - September
£40,620
£39,260£42,000
Estimate
2025 - October
£39,640
£38,120£41,160
Estimate
2025 - November
£38,720
£37,060£40,380
Estimate
2026 - January
£37,180
--
Forecast
2026 - February
£36,420
--
Forecast
2026 - March
£35,660
--
Forecast
2026 - April
£34,900
--
Forecast
2026 - May
£34,120
--
Forecast

All estimates and forecasts are based on actual market data

Last updated: 18 December 2025

Average Monthly Depreciation

A summary of the past 12 and an estimation of the next 6 months.

Past 12 months

-£4,200

Next 6 months

-£4,600

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Price checked by AutoUncle

Super price

Good price

Fair price

A bit pricey

Expensive

Interested in finding a great deal on the popular BMW 420 Gran Coupé?

Are you interested in buying a used sports car? The BMW 420 Gran Coupé is a great pick. AutoUncle showcases a total of 315 cars, each one sourced from an online marketplace or dealership website.

How much does a used BMW 420 Gran Coupé go for?

Currently, the prices for a pre-owned BMW 420 Gran Coupé start at £12,800 and go up to £42,800.

The cost of a pre-owned BMW 420 Gran Coupé is determined by several factors. Key contributing elements include the year of the car, engine capacity and power, the car's fuel economy, how far the car has already travelled together with equipment variant.

For instance, a more recent model with limited mileage, or a premium variant featuring a powerful engine, typically commands a higher price than, for example, an older car without special equipment and with many kilometres behind it.

How many trim levels are available for the BMW 420 Gran Coupé?

The most popular equipment variants for the BMW 420 Gran Coupé are:

When assessing the price of a used BMW 420 Gran Coupé, it's essential to examine vehicles sharing identical trim level. Otherwise, you might draw an inaccurate conclusion about which car to purchase.

Is the BMW 420 Gran Coupé available with multiple fuel options?

Petrol is the foremost fuel option for the BMW 420 Gran Coupé.

Types of fuel:

Before making a choice between the different fuel types, it's important to analyze your driving habits. Do you primarily use your car to commute, and is the distance 35 miles or fewer each way?

If you mostly drive short trips, electric cars, plug-in hybrids or petrol cars may be relevant. If you have a daily commute over longer distances, a modern electric car can be a great choice - especially if you have access to charging at home or at work. For those who drive long distances and don't have access to charging, diesel cars can still be an option. Take into account that several countries restrict high-emission diesel engines from their city zones.

Will the BMW 420 Gran Coupé come in different body types?

The BMW 420 Gran Coupé only comes in the coupe body type in the UK. As a body type, the coupe prioritises style and sporty driving. This body type usually has a tighter and stronger chassis than a sedan or an SUV, and the model is well-suited to people without children and others who travel light. Coupes tend to be more expensive than their sedan or hatchback sister models.

Which cars are popular alternatives to BMW 420 Gran Coupé?

The BMW 420 Gran Coupé is quite well-liked in its segment but still it has some competitors.

Preferred alternatives to the BMW 420 Gran Coupé

  • BMW 420
  • Audi TT
  • Mazda MX5

With a current inventory of 1,733 available models on AutoUncle, the BMW 420 stands out as the top alternative to the BMW 420 Gran Coupé. Average listing price for the BMW 420 is £17,750.

Another popular choice in this class is the Audi TT with 1,042 cars on the market and an average price tag of £13,990. Another good choice for an alternative car is the Mazda MX5 with 689 cars for sale for the average price of £14,695.

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

Considering something greener than the BMW 420 Gran Coupé? Check out these electric alternatives from the same segment::

Still struggling to find an electric car that fits your taste? Take a look at all our available electric cars here.

All regions for BMW 420 Gran Coupé

All fuel types for BMW 420 Gran Coupé

All gear types for BMW 420 Gran Coupé