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Other Mercedes-Benz CLS (2011 - 2018) models:

This car has been superseded by a newer model, click here to go to the latest Mercedes-Benz CLS Coupe review.

View all Mercedes-Benz CLS reviews
Parkers overall rating: 4.5 out of 5 4.5

Running costs

4 out of 5 4.0

Mercedes-Benz CLS running costs are fairly impressive considering the list price of the car. The upside is that the most frugal engine, the 250 CDI, returns 55mpg on average but the downside is the maintenance costs. If you do choose to have your CLS maintained at a pricey Merc dealership, however, you should expect excellent customer service. Insurance costs will be high too.

If you're buying a new CLS from late 2014 onwards though you are able to save more, the new CLS 220 BlueTEC diesel managing to return up to 61mpg.

Estimated fuel cost per year

Fuel type Pence per litre Estimated cost per year *
Unleaded 128p £1,455 - £1,877 *
Diesel 131p £1,045 - £1,295 *

* The estimated fuel cost figure is based on an annual mileage of 10,000 miles and is a guide to how much this model will cost in fuel each year. It's calculated using the model's average MPG (calculated from both town centre and motorway driving) and the average fuel price from around the country. Actual fuel costs will vary based on driving style and road conditions.

Ongoing running costs

Servicing period Variable according to indicator.
Warranty Three years/unlimited mileage.
Road tax (12 months) £125 - £465
See tax rates for all versions
Insurance group 39 - 47
How much is it to insure?

Vehicle excise duty (VED) varies according to the CO2 emissions and the fuel type of the vehicle. For cars registered before 01 March 2001 it is based on engine size. For cars registered on or after 01 March 2001 the VED or road tax is based on the car's CO2 emissions.

Green credentials

3 out of 5 3.0

Being a luxury car, it isn’t exactly ‘green’ but Mercedes-Benz CLS emissions are low compared to other cars of the same size. This is partially thanks to its stop/start system and other Blue Efficiency technology. The four-cylinder turbodiesel-badged CLS 250 CDI with a 2.2-litre diesel engine emits 134g/km of CO2. The CLS 500 with its 4.6-litre V8 petrol engine emits 210g/km CO2.

It's the new for 2014 CLS 220 BluTEC diesel that is the most efficient though, with CO2 emissions of 122g/km.

Highest and lowest CO2 emissions

Engine CO2 emissions Road tax (12 months)
220 Cdi Diesel 129 g/km (Min) £125
500 Petrol 209 g/km (Max) £325


3.5 out of 5 3.5

The CLS has an acceptable reliability record and there are no expected problems on the horizon for the new model. The out-going car had two recalls for minor issues with power braking and a possible loss of engine power. Mercedes-Benz reliability rates around average in consumer surveys.

Car checklist problem points

Body No problems reported yet
Engine / gearbox No problems reported yet.
Other No problems reported yet.

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