Mercedes SL500 Valuation: 89 used car listings analysed

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How much does the Mercedes SL500 depreciate?

Used Mercedes SL500

A used Mercedes SL500 (2003) model loses about £15 per month in value.


Factors that affect the depreciation of a Mercedes SL500:
- Mileage driven
- Maintenance
- Service history


Depreciation is an important part of calculating the total cost of owning a Mercedes SL500. In addition to the monthly depreciation of £15, 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 SL500 cost? Prices, ratings and depreciation by model year

How much does a used Mercedes SL500 cost? Prices, ratings and depreciation by model year

Model year

Price range*

Avg. Price

Median Mileage

Depreciation
(12 mth.)

Cars for sale

2008 Mercedes SL500

£13,975 - £15,995£14,90758,300 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

Comparison of Mercedes SL500 variants and prices

No market data available

Mercedes SL500 (model year 2003) - Price development for the last 12 months and price projection for the next 6 months (May 2025 - October 2026)

Monthly price data with average prices and price ranges

Month

Average market price

Lowest market price

Highest market price

Calculation method

2025 - May
£8,500
£7,340£9,640
Estimate
2025 - June
£8,260
£7,060£9,460
Estimate
2025 - July
£8,500
£6,940£10,040
Estimate
2025 - August
£8,740
£7,180£10,300
Estimate
2025 - September
£9,040
£7,300£10,760
Estimate
2025 - October
£8,720
£7,060£10,400
Estimate
2025 - November
£8,200
£6,780£9,620
Estimate
2025 - December
£8,200
£6,840£9,560
Estimate
2026 - January
£8,520
£7,260£9,800
Estimate
2026 - February
£8,620
£7,300£9,940
Estimate
2026 - March
£8,620
£7,160£10,080
Estimate
2026 - April
£8,320
£6,860£9,780
Estimate
2026 - June
£8,380
--
Forecast
2026 - July
£8,400
--
Forecast
2026 - August
£8,420
--
Forecast
2026 - September
£8,440
--
Forecast
2026 - October
£8,460
--
Forecast

All estimates and forecasts are based on actual market data

Average Monthly Depreciation

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

Past 12 months

-£180

Next 6 months

£140

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Looking for a used Mercedes SL500 at an unbeatable price?

Are you interested in purchasing a used sports car? Then the Mercedes SL500 is a popular choice. In total, there are 100 used Mercedes SL500s for sale on AutoUncle in the UK sourced from various dealership websites and online marketplaces.

What is the price of a used Mercedes SL500?

Currently, the prices for a pre-owned Mercedes SL500 start at £4,495 and go up to £39,890.

The used car price for the German car depends on five primary factors: year, engine capacity and performance, fuel efficiency, how many miles it has travelled as well as equipment variant.

For example, a newer model with fewer miles recorded, or a more luxurious variant with a powerful engine, typically commands a higher price than a car from an older model year, with higher mileage and no optional extras.

How many trim levels are available for the Mercedes SL500?

As you examine the price of a used Mercedes SL500, it's necessary to analyze vehicles having the same engines and equipment. If you don't, you might draw an inaccurate conclusion about which car to buy.

Which fuel options are available for Mercedes SL500?

The predominant fuel variant for the Mercedes SL500 is petrol.

Consider your driving patterns carefully when selecting a fuel type. Is city driving or highway and motorway travel more common for you? What are your average miles driven per week?

If your trips are mostly short, electric, plug-in hybrid or petrol may make the most sense. For daily long-distance driving, the electric car is often ideal - especially with a charger at home or at work. For longer daily commutes, a modern electric car is often suitable - especially if you can charge at home or at work. Diesel cars can still make sense if you drive very far and don't have access to charging. Be aware that in several countries, diesel engines that emit high levels of pollutants are barred from urban areas.

Will the Mercedes SL500 come in different body types?

With the cabriolet being the more popular choice, the Mercedes SL500 is offered in both cabriolet and sedan body styles 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 is the cost of Mercedes SL500 with different body types?

What are good alternatives to Mercedes SL500?

There are some similar cars to the Mercedes SL500.

Most popular alternatives to the Mercedes SL500

  • BMW 420
  • Audi TT
  • Mazda MX5

The BMW 420 is a top choice when looking for an alternative to the Mercedes SL500. At present, there are a total of 1,491 BMW 420 vehicles available for sale in the UK, featuring an average sales price of £18,198.

Another alternative car is the Audi TT with 949 cars currently for sale with an average sales price of £13,199. The Mazda MX5 is the third best alternative. There are currently 556 of this car for sale in the UK with an average sales price of £15,000.

Investigating greener options in place of the Mercedes SL500?

If you are looking for an electric car within the same car segment as the Mercedes SL500, here are some alternatives you might consider:

Haven't discovered an electric car that suits your preferences? Take a look at all our available electric cars here.

All body types for Mercedes SL500