Parkers overall rating: 4 out of 5 4.0

Miles per pound (mpp) Miles per pound (mpp)

Petrol engines 6.3 - 9.0 mpp
Diesel engines 8.6 - 10.2 mpp
Low figures relate to the least economical version; high to the most economical. Based on WLTP combined fuel economy for versions of this car made since September 2017 only, and typical current fuel or electricity costs.

Fuel economy

Petrol engines 29.7 - 42.2 mpg
Diesel engines 42.8 - 50.4 mpg

Mercedes-Benz CLA running costs aren’t as bad as you may think. The firm is making strides towards bringing new business into the brand, and for that reason it is producing cars that don’t cost the earth to run.

The cheapest model is the CLA 220 CDI, which when fitted with the seven-speed semi-automatic transmission produces emissions as low as 117g/km of CO2. That means cheap road tax and also low company car tax for fleet drivers. Fuel economy for this derivative is a claimed 62.8mpg.

Slightly more expensive to run is the petrol model, with CO2 emissions of 130g/km and claimed average fuel economy of 50.4mpg on the combined cycle.

The lowest Mercedes-Benz CLA emissions are to be found with the CLA 220 CDI, which can boast CO2 output as low as 117g/km.

Although a new car, Mercedes-Benz CLA reliability shouldn’t give you much cause for concern. The engines are tried-and-tested on other models and many parts are shared with other models in the range. Mercedes has a good record of reliability overall so not a huge amount to worry about.

Ongoing running costs

Road tax (12 months) £20 - £475
See tax rates for all versions
Insurance group 20 - 46
How much is it to insure?