BMW M4 Cabriolet Valuation: 85 used car listings analysed

Market overviewPrices and data for March-2026: There are currently 85 used BMW M4 Cabriolet (model years 2015 - 2026) available. Prices range from £21,950 to £90,577, with a median price of £33,449. The most common configuration on the market is a combination of convertible, petrol, and automatic, while the most popular trims include Competition Edition, Comfort Edition, Impressive. Market dynamics indicate that a vehicle sells in an average of 18 days, and 37.6% of listings have recently seen a price reduction (with discounts up to £8,500). Additionally, 18 vehicles are currently listed below market value. An indicator of durability: the inventory includes models with a mileage of up to 67,500 km (Source: 42 scanned sites).

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How much does the BMW M4 Cabriolet depreciate?

Used BMW M4 Cabriolet

A used BMW M4 Cabriolet (2018) model gains about £107 per month in value.


Factors that affect the appreciation of a BMW M4 Cabriolet:
- Mileage
- Age of the vehicle
- Number of previous owners
- Accidents or damage history
- Trim level, equipment, and options


Appreciation is an important part of calculating the total value of owning a BMW M4 Cabriolet. In addition to the monthly appreciation of £107, you should also factor in fuel costs, road tax, insurance and maintenance (including tyres and car washes) to get the full monthly value.

How much does a used BMW M4 Cabriolet cost? Prices, ratings and depreciation by model year

How much does a used BMW M4 Cabriolet cost? Prices, ratings and depreciation by model year

Model year

Price range*

Avg. Price

Median Mileage

Depreciation
(12 mth.)

Cars for sale

2026 BMW M4 Cabriolet

£62,111 - £91,042£85,5390 miles+£4,640< 10

2025 BMW M4 Cabriolet

£66,400 - £97,725£76,3554,200 miles-£11,80010

2024 BMW M4 Cabriolet

£62,111 - £77,499£67,6906,800 miles-< 10

2023 BMW M4 Cabriolet

£49,990 - £90,577£59,35824,900 miles-£2,74011

2022 BMW M4 Cabriolet

£49,495 - £58,495£53,81316,500 miles-£1,180< 10

2018 BMW M4 Cabriolet

£26,995 - £37,990£30,35139,700 miles+£1,28013

2019 BMW M4 Cabriolet

£21,995 - £33,950£27,50343,000 miles+£4010

2017 BMW M4 Cabriolet

£22,750 - £27,500£25,33050,400 miles-< 10

2016 BMW M4 Cabriolet

£21,950 - £28,995£24,52348,000 miles-£40< 10

2015 BMW M4 Cabriolet

£19,488 - £22,995£20,97568,500 miles-£420< 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: 16 March 2026

Comparison of BMW M4 Cabriolet variants and prices

Below you can compare prices and depreciation for the 3 most popular BMW M4 Cabriolet variants. The table is updated daily with data from the market in United Kingdom.

Comparison of BMW M4 Cabriolet variants and prices

Variant

Price range*

Avg. Price

Median Mileage

Depreciation
(12 mth.)

Cars for sale

🏆 The most popular

BMW M4 Cabriolet Competition Edition

£25,950 - £91,017£53,93818,900 miles-£6,10064
📈 The best value

BMW M4 Cabriolet Comfort Edition

£19,488 - £53,950£25,00552,500 miles-£46013
💰 The budget choice

BMW M4 Cabriolet Impressive

£19,990 - £23,990£21,99264,700 miles-< 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: 16 March 2026

Which variant should you choose?

💰 The budget choice

The Impressive is the cheapest entry point with an average price of £21,992.

Accuracy will improve as more cars from this variant become available

🏆 The most popular

There are the most Competition Edition for sale right now (64), which gives you the most options to choose from.

📈 The best value

The Comfort Edition has held its price stable with minimal loss in value over the past year (-£460).

BMW M4 Cabriolet (model year 2018) - Price development for the last 12 months and price projection for the next 6 months (March 2025 - August 2026)

Monthly price data with average prices and price ranges

Month

Average market price

Lowest market price

Highest market price

Calculation method

2025 - March
£28,460
£27,060£29,860
Estimate
2025 - April
£28,820
£27,400£30,220
Estimate
2025 - May
£29,180
£27,760£30,600
Estimate
2025 - June
£29,300
£27,820£30,780
Estimate
2025 - July
£29,440
£27,880£30,980
Estimate
2025 - August
£29,560
£27,940£31,160
Estimate
2025 - September
£28,380
£25,740£31,000
Estimate
2025 - October
£27,180
£23,540£30,820
Estimate
2025 - November
£26,440
£23,080£29,800
Estimate
2025 - December
£27,920
£25,520£30,320
Estimate
2026 - January
£28,040
£25,360£30,740
Estimate
2026 - February
£29,740
£26,900£32,560
Estimate
2026 - April
£30,280
--
Forecast
2026 - May
£30,560
--
Forecast
2026 - June
£30,820
--
Forecast
2026 - July
£31,100
--
Forecast
2026 - August
£31,360
--
Forecast

All estimates and forecasts are based on actual market data

Last updated: 16 March 2026

Average Monthly Depreciation

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

Past 12 months

£1,280

Next 6 months

£1,620

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Price checked by AutoUncle

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Good price

Fair price

A bit pricey

Expensive

Looking for a used BMW M4 Cabriolet?

Are you interested in buying a used sports car? The BMW M4 Cabriolet is a solid choice. AutoUncle has 84 used BMW M4 Cabriolets for sale in UK, each one collected from an online marketplace or dealership website.

What is the used car price of the BMW M4 Cabriolet?

A used BMW M4 Cabriolet costs between £20,491 for the cheapest variant and £87,995 for the most expensive model.

The used car price for a BMW M4 Cabriolet varies according to five primary factors: year of production, engine capacity and power, fuel economy, how much the car's odometer reads as well as equipment level.

For example, a younger car with fewer miles on the odometer typically costs more. Likewise, models at the premium end with luxurious features or potent engines tend to come with a more substantial price tag than, for example, an older model with more kilometres driven or with a lower equipment level.

Which trim levels can I choose for the BMW M4 Cabriolet?

When reviewing the price points of used BMW M4 Cabriolet cars, it is crucial only comparing the deals of cars with a similar engine and trim level. If you don't, you may end up reaching a wrong conclusion on which car to buy.

Is the BMW M4 Cabriolet available in different fuel variants?

Petrol is the singular fuel variant for the BMW M4 Cabriolet. We currently offer eighty-four cars at an average price of £45,327.

We urge you to take your driving habits into account before settling on a specific fuel type. On a regular week, how far do you drive? Do you engage in many brief trips, or are your drives generally longer in distance?

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. In a few cases with long journeys and limited charging infrastructure, diesel can be a practical solution. Keep in mind that diesel engines with high emissions have been banned from entering cities in a range of countries.

Are there more body variants of BMW M4 Cabriolet?

The BMW M4 Cabriolet only comes in the cabriolet body type in the UK. Cabrios and convertibles elevate the driving experience, offering an open-air thrill. Nowadays, many cabrios are suitable for year-round driving due to their high-quality hoods and weatherproofing. However, it's worth noting that convertibles tend to be heavier than standard cars. The absence of a roof often necessitates additional reinforcement to the undercarriage to bolster the chassis.

What other comparable cars are there to BMW M4 Cabriolet?

There are several possible competitors to the BMW M4 Cabriolet.

Recommended alternatives to the BMW M4 Cabriolet

  • BMW 420
  • Audi TT
  • Mazda MX5

The BMW 420 is a strong alternative to the BMW M4 Cabriolet. Currently there are 1,491 BMW 420 for sale in the UK with an average sales price of £18,198.

The Audi TT is another popular pick, with 949 cars currently for sale and an average price of £13,199. Ranked third, the Mazda MX5 is also a good alternative to the BMW M4 Cabriolet, and you'll find 556 used Mazda MX5 cars for an average price of £15,000 on AutoUncle.

Reflecting on the move to an electrically powered car?

Not fixed on the BMW M4 Cabriolet? Here are some electric options in the same segment::

Still on the hunt for the right electric car? Explore our entire assortment of electric cars here.

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