Used Mercedes-Benz SLK AMG (2012 - 2016) Costs

Review by Gareth Evans on
Last Updated: 21 Nov 2013
The Mercedes-Benz SLK 55 AMG Roadster is a convertible performance car with a folding hard-top. It’s based upon the regular SLK but comes with a huge petrol engine which makes it one seriously quick cabriolet.

3 out of 5

Running costs

Considering it’s a car with a 5.5-litre V8 engine, Mercedes-Benz SLK 55 AMG running costs could be a lot worse than they are. Sure, they’re not what you’d call cheap, but thanks to fuel-saving tech such as stop/start, cylinder management and brake energy regeneration they’re considerably lower than the previous version of the car.

With a claimed average fuel economy of 33.6mpg you can expect a range of up to 584 miles per tank of fuel. We saw closer to 25mpg over mixed driving, with means a range of around 435 miles between trips to the petrol station.

With CO2 emissions of 195g/km, road tax isn’t cheap but it’s not ruinous either.

Insurance group 47A means that aspect of the car’s running costs is going to be pretty expensive.

Summary Running Costs

Servicing period

Every 12 months.


Three year, unlimited mileage warranty as per Mercedes-Benz norm.

Road tax (12 months)

£305.00 - £305.00

Vehicle excise duty (VED) varies according to the CO2 emissions and the fuel type of the vehicle. For cars registered after March 1st 2001 VED or road tax is based on the car's CO2 emissions. For cars registered before March 1st 2001 it is based on engine size.

Full running costs data

3 out of 5

Green credentials

  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
  • L
  • M

CO2 emission figure (g/km)

Fuel economy rating

The arrows indicate the best and worst CO2 bands for this model.

Emissions summary

In terms of CO2, Mercedes-Benz SLK 55 AMG emissions are quite competitive considering its performance credentials at 195g/km. That’s thanks to a whole host of efficiency boosting features such as the car’s ability to shut down four of its eight cylinders when not required. It also has a quick stop/start system and a set-up which harvests energy when you brake in a similar way to the KERS technology used in Formula 1 cars.

Find the exact engine and CO2