Mercedes SL320 used • 49 cars price-checked by AutoUncle

Market overviewPrices range from £3,695 to £23,950 across all listings

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How much does the Mercedes SL320 depreciate?

Used Mercedes SL320

A used Mercedes SL320 (1998) model loses about £43 per month in value.


Factors that affect the depreciation of a Mercedes SL320:
- Mileage driven
- Maintenance
- Service history


Depreciation is an important part of calculating the total cost of owning a Mercedes SL320. In addition to the monthly depreciation of £43, 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 SL320 cost? Prices, ratings and depreciation by model year

How much does a used Mercedes SL320 cost? Prices, ratings and depreciation by model year

Model year

Typical price range*

Average price

Price trend / depreciation
(last 12 months)

Cars for sale

2015 Mercedes SL320

- - ---0

*The 'Typical 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

Which Mercedes SL320 variant should I buy? Compare prices of Edition vs. Mille Miglia

This overview shows the difference in price and depreciation between the most common Mercedes SL320 variants - including Edition, Mille Miglia

Which Mercedes SL320 variant should I buy? Compare prices of Edition vs. Mille Miglia

Variant

Typical price range*

Average price

Price trend / depreciation
(last 12 months)

Cars for sale

Mercedes SL320 Edition

£4,990 - £23,950£11,576-9

Mercedes SL320 Mille Miglia

£9,000 - £9,000£9,000-1

*The 'Typical 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

Frequently Asked Questions about Mercedes SL320 variants

Q: Which Mercedes SL320 variant is the cheapest?

A: The cheapest Mercedes SL320 variant on the market is Mille Miglia.

Q: Which Mercedes SL320 variant is the most expensive?

A: The most expensive Mercedes SL320 variant on the market is Edition.

Q: Which Mercedes SL320 variant is best at keeping its value?

A: The Mercedes SL320 variant that keeps its value the best varies based on current market conditions.

Q: Which Mercedes SL320 variant is the most popular?

A: The most popular Mercedes SL320 variant is Edition.

Mercedes SL320 (model year 1998) - Price development for the last 10 months and price projection for the next 6 months (January 2025 - April 2026)

Monthly price data with average prices and price ranges

Month

Average market price

Lowest market price

Highest market price

Calculation method

2025 - January
£8,700
£4,540£12,840
Estimate
2025 - February
£8,600
£4,580£12,620
Estimate
2025 - March
£8,260
£4,480£12,060
Estimate
2025 - April
£8,820
£4,640£13,020
Estimate
2025 - May
£8,420
£4,860£11,980
Estimate
2025 - June
£8,020
£5,100£10,960
Estimate
2025 - July
£8,000
£5,120£10,860
Estimate
2025 - August
£7,980
£5,220£10,760
Estimate
2025 - September
£7,940
£5,300£10,580
Estimate
2025 - October
£8,180
£5,500£10,860
Estimate
2025 - December
£8,080
--
Forecast
2026 - January
£8,020
--
Forecast
2026 - February
£7,960
--
Forecast
2026 - March
£7,920
--
Forecast
2026 - April
£7,860
--
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

-£520

Next 6 months

-£320

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Price checked by AutoUncle

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On the hunt for a used Mercedes SL320?

Are you considering purchasing a used sports car? Then the Mercedes SL320 is a great choice. There are 46 used Mercedes SL320s currently available on AutoUncle, each one sourced from an online marketplace or dealership website.

What is the cost of a pre-owned Mercedes SL320?

A used Mercedes SL320 costs between £3,695 for the cheapest variant and £18,995 for the most expensive model.

The cost of a pre-owned Mercedes SL320 is determined by several factors. Key contributing elements include the year of manufacture, engine size and performance, fuel economy of the car, number of miles not to mention the vehicle's equipment variant.

For example, a younger car with fewer miles on the odometer will typically cost more. Similarly, higher-end models with more luxurious features or more powerful engines tend to come with a more substantial price tag than, for example, an older car without special equipment and with many kilometres behind it.

Which trim levels can I choose for the Mercedes SL320?

The Mercedes SL320 is only available in one trim level, the Mercedes SL320 Edition.

When assessing the price of a used Mercedes SL320, it's essential to examine vehicles that have the same engines and features. Otherwise, you might draw an inaccurate conclusion about which car to acquire.

In which fuel variants is the Mercedes SL320 offered?

The most popular fuel type for the Mercedes SL320 is petrol.

When thinking about which fuel type to buy, it's important to consider your driving habits. Is your driving primarily through city traffic or along open highways and motorways? How many miles do you rack up in an average week?

Electric, plug-in hybrid and petrol work well for short trips. If you drive long distances on a daily basis, an electric car is good - especially if you can charge 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. If you often drive long distances and can't charge, diesel can still be a viable option. Bear in mind that diesel engines emitting high levels of pollution are not allowed in cities in a number of countries.

Will the Mercedes SL320 come in different body types?

On AutoUncle, the Mercedes SL320 is exclusively offered in the cabriolet body style. 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.

Which competitors does the Mercedes SL320 have?

The Mercedes SL320 has some competitors from the same segment.

Alternative cars to the Mercedes SL320

  • BMW 420
  • Audi TT
  • Mazda MX5

With a selection of 1,733 available models on AutoUncle, the BMW 420 clearly stands out as the top alternative to the Mercedes SL320. On average, the BMW 420 costs £17,750.

The Audi TT is another popular choice in this segment, with 1,042 cars for sale and an average price of £13,990. Another recommended alternative is Mazda MX5 with 689 cars for sale an average price tag of £14,695.

Investigating greener options in place of the Mercedes SL320?

Considering something greener than the Mercedes SL320? Check out these electric alternatives from the same segment::

Still struggling to find an electric car that fits your taste? Review our entire selection of electric cars here.

All trim level for Mercedes SL320