Mercedes SLK320 Valuation: 14 used car listings analysed

Market overviewPrices and data for March-2026: There are currently 14 used Mercedes SLK320 (model years 1999 - 2003) available. Prices range from £1,291 to £6,995, with a median price of £3,498. The most common configuration on the market is a combination of convertible, petrol, and automatic, while the most popular trims include . Market dynamics indicate that a vehicle sells in an average of 30 days, and 0.0% of listings have recently seen a price reduction (with discounts up to £0). Additionally, 1 vehicles are currently listed below market value. An indicator of durability: the inventory includes models with a mileage of up to 149,000 km (Source: 42 scanned sites).

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Looking for a used Mercedes SLK320 at an unbeatable price?

Are you interested in purchasing a used sports car? The Mercedes SLK320 is a solid choice. At AutoUncle, we have assembled a collection of 14 used Mercedes SLK320 cars sourced from numerous dealership websites and online marketplaces.

What is the cost of a pre-owned Mercedes SLK320?

A used Mercedes SLK320 costs between £2,499 for the cheapest variant and £6,995 for the most expensive model.

The cost of a pre-owned Mercedes SLK320 is determined by several factors. Key contributing elements include the year of the car, engine capacity and performance, the car's fuel economy, how far the car has already travelled together with equipment variant.

For instance, a more recent model with lower mileage, or a luxury edition with a robust engine, usually garners a premium price than an earlier version with less equipment and higher mileage.

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Which fuel options are available for Mercedes SLK320?

There is only one fuel option for the Mercedes SLK320, which is petrol. We currently have fourteen cars available at an average price of £4,046.

In order to choose the right fuel type, you need to ask yourself the following questions: How many miles do you drive in a normal week? Do you take many short trips, or do you tend to drive long distances?

For short journeys, electric cars, plug-in hybrids or petrol cars are obvious choices. 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. Despite the rise of electric cars, diesel can still be useful for long journeys and lack of charging options. Consider that in many countries, cities have banned the entry of diesel engines with high emissions.

Which different body types does the Mercedes SLK320 come in?

On AutoUncle, the Mercedes SLK320 is exclusively offered in the cabriolet body style. Cabrios and convertibles give the driving experience a new dimension. Thanks to their excellent hoods and weather gear, most models are fit for year-round use these days. Thickener is applied underneath the car to strengthen the chassis in lieu of a roof, which means that convertibles have a tendency to be heavier than normal cars.

What other cars offer some of the same features as the Mercedes SLK320?

Several vehicles that are similar to the Mercedes SLK320 are available.

Top competitors to the Mercedes SLK320

  • BMW 420
  • Audi TT
  • Mazda MX5

With a selection of 1,491 available models on AutoUncle, the BMW 420 clearly stands out as the top alternative to the Mercedes SLK320. On average, the BMW 420 costs £18,198.

The Audi TT is a strong option in this segment, with 949 cars currently for sale on AutoUncle and an average price of £13,199. The Mazda MX5 comes in as the third most popular choice with an average sales price of £15,000 and 556 car for sale at the moment in the UK.

Searching for a greener substitute to the Mercedes SLK320?

If you're considering an electric car within the same car segment as the Mercedes SLK320, here are some few suggestions:

Still on the hunt for the right electric car? Examine our full lineup of electric cars here.