Mercedes SLK250 used • 159 cars price-checked by AutoUncle

Market overviewUsed Mercedes SLK250 prices typically range from £5,999 to £12,795, averaging £8,846 (according to fresh market data from December). The most popular Mercedes SLK250 variants right now are AMG, Sport Edition, Sport. We have identified 6 cars priced below the market. The average selling time for used Mercedes SLK250 is currently 30 days.

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How much does the Mercedes SLK250 depreciate?

Used Mercedes SLK250

A used Mercedes SLK250 (2014) model loses about £65 per month in value.


Factors that affect the depreciation of a Mercedes SLK250:
- Mileage driven
- Maintenance
- Service history


Depreciation is an important part of calculating the total cost of owning a Mercedes SLK250. In addition to the monthly depreciation of £65, 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 Mercedes SLK250 cost? Prices, ratings and depreciation by model year

How much does a used Mercedes SLK250 cost? Prices, ratings and depreciation by model year

Model year

Price range*

Avg. Price

Depreciation
(12 mth.)

Cars for sale

2016 Mercedes SLK250

£8,495 - £15,995£11,739-< 10

2015 Mercedes SLK250

£8,495 - £13,750£10,878+£12028

2011 Mercedes SLK250

£6,795 - £12,495£9,446-< 10

2014 Mercedes SLK250

£6,995 - £10,995£8,702-£78041

2013 Mercedes SLK250

£6,250 - £9,995£8,049-£84042

2012 Mercedes SLK250

£5,000 - £9,999£7,558-£28035

*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: 13 December 2025

Comparison of Mercedes SLK250 variants and prices

Below you can compare prices and depreciation for the 4 most popular Mercedes SLK250 variants. The table is updated daily with data from the market in United Kingdom.

Comparison of Mercedes SLK250 variants and prices

Variant

Price range*

Avg. Price

Depreciation
(12 mth.)

Cars for sale

Mercedes SLK250 CarbonLOOK Edition

£11,699 - £12,795£12,064-< 10

Mercedes SLK250 Sport Edition

£5,999 - £12,495£9,247-< 10
🏆 The most popular

Mercedes SLK250 AMG

£6,250 - £12,990£8,925-£480109
💰 The budget choice

Mercedes SLK250 Sport

£7,800 - £8,495£8,263-< 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: 13 December 2025

Which variant should you choose?

💰 The budget choice

The Sport is the cheapest entry point with an average price of £8,263.

Accuracy will improve as more cars from this variant become available

🏆 The most popular

There are the most AMG for sale right now (109), which gives you the most options to choose from.

📈 The best value

The AMG has held its price stable with minimal loss in value over the past year (-£480).

Mercedes SLK250 (model year 2014) - Price development for the last 12 months and price projection for the next 6 months (December 2024 - May 2026)

Monthly price data with average prices and price ranges

Month

Average market price

Lowest market price

Highest market price

Calculation method

2024 - December
£9,420
£8,360£10,480
Estimate
2025 - January
£9,060
£8,020£10,120
Estimate
2025 - February
£8,860
£7,780£9,940
Estimate
2025 - March
£8,880
£7,820£9,940
Estimate
2025 - April
£9,280
£7,920£10,620
Estimate
2025 - May
£9,620
£8,260£10,960
Estimate
2025 - June
£9,380
£8,360£10,380
Estimate
2025 - July
£9,240
£8,400£10,080
Estimate
2025 - August
£9,180
£8,300£10,060
Estimate
2025 - September
£9,040
£8,260£9,840
Estimate
2025 - October
£8,880
£8,020£9,720
Estimate
2025 - November
£8,640
£7,700£9,560
Estimate
2026 - January
£8,340
--
Forecast
2026 - February
£8,180
--
Forecast
2026 - March
£8,040
--
Forecast
2026 - April
£7,900
--
Forecast
2026 - May
£7,740
--
Forecast

All estimates and forecasts are based on actual market data

Last updated: 13 December 2025

Average Monthly Depreciation

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

Past 12 months

-£780

Next 6 months

-£900

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Looking for information on a used Mercedes SLK250?

Are you interested in getting a used sports car? Then the Mercedes SLK250 is an excellent option. AutoUncle present 148 options sourced from numerous dealership websites and online marketplaces.

How much does a used Mercedes SLK250 cost?

The pricing range for a used Mercedes SLK250 model at AutoUncle will start at £6,295 and go up to £12,750.

The cost of a pre-owned Mercedes SLK250 is determined by several factors. Key contributing elements include the year of the car, engine size and power, the car's fuel economy, vehicle mileage as well as the vehicle's equipment variant.

For example, a newer model with low mileage or a premium version equipped with a high-performance engine generally demands a higher price than, for example, an older model with more kilometres driven or with a lower equipment level.

What trim levels is the Mercedes SLK250 available in?

Here is an overview of the most popular equipment variants for Mercedes SLK250, sorted by number of cars for sale and their market price:

  • Mercedes SLK250 AMG: Right now you will find 110 cars for sale at an average price of £8,963
  • Mercedes SLK250 Sport Edition: Here you will find 5 cars for sale at an average price of £9,596
  • Mercedes SLK250 Sport: 3 cars for sale at an average price of £8,263
  • Mercedes SLK250 CarbonLOOK Edition: 1 car for sale at an average price of £12,795

When looking for the best car deal for a used Mercedes SLK250, it is important that you exclusively compare with the offers of cars with the same engine and trim level. If you don't, you might make a wrong decision on which car to buy.

What fuel configurations can I choose from for the Mercedes SLK250?

The primary energy source for the Mercedes SLK250 is diesel.

Mercedes SLK250 fuel types:

We urge you to take your driving habits into account before settling on a specific fuel type. Do your driving habits lean more towards city streets or open roads and motorways? What is the total distance you drive in a typical week?

For shorter trips, electric cars, plug-in hybrids and petrol cars are great. For longer commutes, an electric car is often the best choice - especially with charging options at home or at work. 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. Note that certain countries have banned high-emission diesel engines from cities.

Are there different body versions of Mercedes SLK250?

On AutoUncle, the Mercedes SLK250 is exclusively offered in the cabriolet body style. A cabrio or a convertible is a fantastic way to give the driving experience a new dimension. These days, most cabrio models have excellent hoods and weather gear, making them suitable for driving year-round. It’s worth noting that convertibles tend to be heavier than normal cars due to the lack of roof, as thickener is applied underneath the car to strengthen the chassis.

Curious about what other alternatives are available?

The Mercedes SLK250 has some competitors from the same segment.

Well-liked options instead of the Mercedes SLK250

  • BMW 420
  • Audi TT
  • Mazda MX5

The BMW 420 is a top choice when looking for an alternative to the Mercedes SLK250. Currently there are 1,733 BMW 420 for sale in the UK with an average sales price of £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.

Considering an electric car?

If you are thinking about going electric then, we have a lineup of alternative electric cars to recommend of the same car segment, the S-segment. These are:

Haven't discovered an electric car that catches your eye? Browse our full range of electric cars here.

All fuel types for Mercedes SLK250

All years for Mercedes SLK250

All trim level for Mercedes SLK250