Mercedes SL350 Valuation: 122 used car listings analysed

Market overviewPrices and data for March-2026: There are currently 122 used Mercedes SL350 (model years 2003 - 2014) available. Prices range from £4,994 to £19,750, with a median price of £9,950. The most common configuration on the market is a combination of convertible, petrol, and automatic, while the most popular trims include AMG, Edition, Sport Edition. Market dynamics indicate that a vehicle sells in an average of 59 days, and 33.9% of listings have recently seen a price reduction (with discounts up to £3,000). Additionally, 22 vehicles are currently listed below market value. An indicator of durability: the inventory includes models with a mileage of up to 115,000 km (Source: 42 scanned sites).

autouncle-certified

Price checked by AutoUncle

Super price

Good price

Fair price

A bit pricey

Expensive

Showing 1 - 25 of 120 results

How much does the Mercedes SL350 depreciate?

Used Mercedes SL350

A used Mercedes SL350 (2004) model loses about £57 per month in value.


Factors that affect the depreciation of a Mercedes SL350:
- Mileage driven
- Maintenance
- Service history


Depreciation is an important part of calculating the total cost of owning a Mercedes SL350. In addition to the monthly depreciation of £57, 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 SL350 cost? Prices, ratings and depreciation by model year

How much does a used Mercedes SL350 cost? Prices, ratings and depreciation by model year

Model year

Price range*

Avg. Price

Median Mileage

Depreciation
(12 mth.)

Cars for sale

2013 Mercedes SL350

£12,995 - £20,995£18,12852,000 miles+£2,30015

2012 Mercedes SL350

£12,000 - £16,475£14,61655,500 miles-< 10

2010 Mercedes SL350

£10,995 - £15,995£13,13858,100 miles-< 10

2009 Mercedes SL350

£7,500 - £14,995£11,04971,000 miles-£920< 10

2008 Mercedes SL350

£7,995 - £11,995£9,64372,700 miles-£94015

2006 Mercedes SL350

£4,495 - £9,995£7,51982,100 miles+£60012

2007 Mercedes SL350

£4,995 - £8,995£7,30199,000 miles-£180< 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: 23 March 2026

Comparison of Mercedes SL350 variants and prices

Below you can compare prices and depreciation for the 1 most popular Mercedes SL350 variants. The table is updated daily with data from the market in United Kingdom.

Comparison of Mercedes SL350 variants and prices

Variant

Price range*

Avg. Price

Median Mileage

Depreciation
(12 mth.)

Cars for sale

💰 The budget choice

Mercedes SL350 AMG

£4,994 - £19,995£17,36951,400 miles-£2,380< 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: 23 March 2026

Which variant should you choose?

💰 The budget choice

The AMG is the cheapest entry point with an average price of £17,369.

Accuracy will improve as more cars from this variant become available

🏆 The most popular

There are the most AMG for sale right now (8), which gives you the most options to choose from.

Accuracy will improve as more cars from this variant become available

📈 The best value

The AMG has held its price stable with minimal loss in value over the past year (-£2,380).

Accuracy will improve as more cars from this variant become available

Mercedes SL350 (model year 2004) - Price development for the last 13 months and price projection for the next 6 months (March 2025 - September 2026)

Monthly price data with average prices and price ranges

Month

Average market price

Lowest market price

Highest market price

Calculation method

2025 - March
£8,640
£7,540£9,740
Estimate
2025 - April
£8,600
£7,500£9,680
Estimate
2025 - May
£8,240
£7,180£9,300
Estimate
2025 - June
£8,360
£7,220£9,480
Estimate
2025 - July
£7,900
£6,560£9,240
Estimate
2025 - August
£7,900
£6,520£9,280
Estimate
2025 - September
£7,540
£6,120£8,980
Estimate
2025 - October
£7,220
£5,600£8,840
Estimate
2025 - November
£7,720
£6,300£9,160
Estimate
2025 - December
£7,980
£6,480£9,460
Estimate
2026 - January
£8,340
£6,780£9,880
Estimate
2026 - February
£8,340
£6,580£10,120
Estimate
2026 - March
£7,960
£5,940£9,960
Estimate
2026 - April
£8,100
--
Forecast
2026 - May
£8,240
--
Forecast
2026 - June
£8,380
--
Forecast
2026 - July
£8,540
--
Forecast
2026 - August
£8,680
--
Forecast
2026 - September
£8,820
--
Forecast

All estimates and forecasts are based on actual market data

Last updated: 23 March 2026

Average Monthly Depreciation

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

Past 12 months

-£680

Next 6 months

£860

autouncle-certified

Price checked by AutoUncle

Super price

Good price

Fair price

A bit pricey

Expensive

Looking for information on a used Mercedes SL350?

Are you considering purchasing a used sports car? Look no further than the Mercedes SL350 - an excellent choice! At AutoUncle, we have assembled a collection of 132 used Mercedes SL350 cars sourced from numerous dealership websites and online marketplaces.

What is the used car price of the Mercedes SL350?

The price of a used Mercedes SL350 ranges from £4,975 for the cheapest model to £19,950 for the latest and most well-equipped model.

A pre-owned Mercedes SL350 is valued at different prices depending on mainly five factors: year, engine capacity and power, fuel consumption of the car, mileage and trim level.

For example, a newer model with low mileage or a premium version equipped with a high-performance engine generally demands a higher price than an earlier version with less equipment and higher mileage.

What equipment levels does the Mercedes SL350 offer?

While evaluating the cost of a pre-owned Mercedes SL350, it's crucial to evaluate vehicles with equivalent engines and accessories. Otherwise, you might draw an inaccurate conclusion about which car to buy.

Is the Mercedes SL350 available in different fuel variants?

The Mercedes SL350 most commonly uses petrol as its fuel type.

Factor in your driving habits when making a decision about fuel types. How far do you tend to drive in a week? Are they mainly short trips, or do you often find yourself driving longer distances?

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. Diesel cars may still be relevant in some cases with very long journeys and lack of charging options. Keep in mind that diesel engines with high emissions have been banned from entering cities in a range of countries.

Which different body types does the Mercedes SL350 come in?

Cabriolet is a favourite among drivers of the Mercedes SL350. Cabrios and convertibles are a great way to add another dimension to the driving experience. Today, most cabrios can be driven year-round as the majority of models have really good hoods and weather gear. Beware that convertibles are typically heavier than normal cars. Because of the lack of roof, thickener is applied underneath the car to strengthen the chassis.

AutoUncle's selection of Mercedes SL350 by body type and with price statistics

What are the obvious alternatives in the same class as the Mercedes SL350?

Several vehicles that are similar to the Mercedes SL350 are available.

Favored alternatives for the Mercedes SL350

  • BMW 420
  • Audi TT
  • Mazda MX5

With a current inventory of 1,491 available models on AutoUncle, the BMW 420 stands out as the top alternative to the Mercedes SL350. Average listing price for the BMW 420 is £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 Mercedes SL350, and you'll find 556 used Mazda MX5 cars for an average price of £15,000 on AutoUncle.

Weighing up the benefits of an electric car?

Considering something greener than the Mercedes SL350? Check out these electric alternatives from the same segment::

Didn't find an electric car to your liking? Take a look at all our available electric cars here.

All body types for Mercedes SL350