Mercedes SL400 in Buckinghamshire • 2 cars with AutoUncle Valuation

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How much does a used Mercedes SL400 cost? Prices, ratings and depreciation by model year

How much does a used Mercedes SL400 cost? Prices, ratings and depreciation by model year

Model year

Price range*

Avg. Price

Median Mileage

Depreciation
(12 mth.)

Cars for sale

2016 Mercedes SL400

£26,345 - £34,364£31,28726,600 miles-< 10

2017 Mercedes SL400

£24,070 - £34,841£31,11944,500 miles-< 10

2015 Mercedes SL400

£18,701 - £29,120£23,55150,600 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: 29 June 2026

Comparison of Mercedes SL400 variants and prices

Below you can compare prices and depreciation for the 2 most popular Mercedes SL400 variants. The table is updated daily with data from the market in United Kingdom.

Comparison of Mercedes SL400 variants and prices

Variant

Price range*

Avg. Price

Median Mileage

Depreciation
(12 mth.)

Cars for sale

📈 The best value

Mercedes SL400 AMG line

£24,070 - £34,841£31,11944,500 miles+£1,940< 10
💰 The budget choice

Mercedes SL400 AMG

£18,986 - £28,770£23,51147,100 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: 29 June 2026

Which variant should you choose?

💰 The budget choice

The AMG is the cheapest entry point with an average price of £23,511.

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 line has held its price stable with minimal loss in value over the past year (+£1,940).

Accuracy will improve as more cars from this variant become available

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See Mercedes SL400