Mercedes-Benz SLK (2004 – 2011) Review

Mercedes-Benz SLK (2004 – 2011) At A Glance


+Georgeous jewel like looks reminiscent of a miniature McLaren SLR. Electric folding hard top. A much desired and aspired to car.

-Apalling ride on 19-inch rear alloys. Not as together to drive as a Nissan 350Z or Porsche Boxster.

Insurance Groups are between 40–47
On average it achieves 94% of the official MPG figure

In its day, the SLK was probably the most exquisite piece of street jewellery you can buy. It's a ‘must have' ‘want one' kind of car on its looks alone. A bit girly, if you had to get critical, but Clarkson smoked an SLK55 so it must be okay for blokes too.

It has all the bits of the original SLK, most importantly the electric folding hardtop. But it looks vastly better. A bit like a shrunken Mercedes McClaren SLR with better proportions. Come to think of it, personal preferences aside, there probably isn't a better-looking car than the new SLK anywhere on the planet.

Mercedes Benz SLK280 2006 Road Test

Mercedes Benz SLK350 facelift 2008 Road Test

Real MPG average for a Mercedes-Benz SLK (2004 – 2011)


Real MPG was created following thousands of readers telling us that their cars could not match the official figures.

Real MPG gives real world data from drivers like you to show how much fuel a vehicle really uses.

Average performance


Real MPG

18–38 mpg

MPGs submitted


Diesel or petrol? If you're unsure whether to go for a petrol or diesel (or even an electric model if it's available), then you need our Petrol or Diesel? calculator. It does the maths on petrols, diesels and electric cars to show which is best suited to you.

Satisfaction Index

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Ask Honest John

Should I buy a Mercedes-Benz SLK or a Mazda MX-5?
"I'm looking to buy either a Mercedes-Benz SLK or a Mazda MX-5. My budget is £2500. What are the pros and cons of both, please?"
Pros and cons of the MX-5: And the SLK: We'd recommend the Mazda. They're mechanically simpler and are very cheap/easy to maintain. There's also an excellent support network and more on the market – so you can be picky about condition. Watch out for rust, though. As an alternative, look at the excellent Toyota MR2.
Answered by Andrew Brady
What are the risks of buying a 10-year-old Mercedes-Benz SLK diesel?
"I am thinking of buying a 2010 Mercedes-Benz SLK. I am finding a number diesel cars for sale. Do you think a diesel SLK would be a good choice over petrol? If not, which petrol engine would you recommend?"
The SLK's diesel engines are strong, but if you often drive at low speeds you may encounter problems with the DPF (diesel particulate filter) which needs regular long runs on the motorway to stay in peek condition. The SLK200 and SLK250 supercharged petrols won't suffer from this issue and won't cost the earth to run, or you could go for the SLK350 which is quick and has a howling soundtrack you'll enjoy when the roof's down.
Answered by Russell Campbell
I'm looking at buying a 10 year old Mercedes-Benz SLK - how can I ensure things like brakes and fluids are okay?
"I'm looking at buying a 10 year old Mercedes-Benz SLK with 22,000 on the clock. However, it has only been serviced at 9000 miles (2014) and just recently by the car dealer. What do I need to have done to ensure brakes, fluids, belts etc are up to scratch?"
You'll want to treat it as a big service. Engine oil and filter, fuel filter, brake fluid, dust filter, and coolant. But it will be the visual checks - condition of brake pads and discs, making sure there aren't any leaks, looking for chafe marks, checking for wear on the rubber boots etc.
Answered by Keith Moody
What's the cheapest way to insure two cars?
"I have a 2005 Mercedes-Benz SLK 350 7G tronic with 68000 miles and have an Aviva multi car policy with my Kia Sportage. Now we have come up for fully comprehensive renewal and for both cars they want £497 with the discount for multi vehicle, but the separate costs are £270 for the SLK and £291 for the Kia. I have full NCB on both cars, max 3K yearly mileage on the SLK and my wife as a named driver. We both have clean licences and are both 68 and in good health. Do you know of a specialist insurance company that would be cheaper for my SLK as it is an occasional car with low mileage of less than 3K per year, we both have clean licenses and have not had an accident since year dot."
What you need to do with your current insurer is alter the use on the Mercedes-Benz and ensure it does not have to and from a place of work on - if you are retired and do not work, take it off completely. At the quote you have been given, that is extremely cheap compared to what it would cost for each vehicle on their own. You would struggle to ensure the Mercedes for £497 on it 's own. Expect your premiums to raise massively next year, as it will for everyone. You could try
Answered by Tim Kelly

What does a Mercedes-Benz SLK (2004 – 2011) cost?