Mercedes CLS saloon (2011-2017) - MPG, running costs & CO2

The basic CLS 220 diesel engine is the cheapest to run, but the CLS 350 BlueTEC is our top pick

Carbuyer Rating

3.8 out of 5

MPG, running costs & CO2 Rating

3.5 out of 5

The CLS is a sporty four-door coupe, so you could be forgiven for expecting it to be heavy on fuel, but if you get the right model, it's actually relatively efficient. Insurance won't be cheap, however, but Mercedes does offer fixed-price servicing plans.

Mercedes CLS MPG & CO2

The most economical versions of the CLS are the diesels. The Mercedes CLS 220 BlueTEC diesel is the cheapest to run, managing 61.4mpg fuel economy and CO2 emissions of 122g/km, so road tax will cost you just £110 a year – not bad for a car of this type.

The Mercedes CLS 350 BlueTEC diesel is our pick of the range, though, because it's quick yet also manages 52.3mpg economy and has CO2 emissions that equate to a £145 annual tax bill.

There are two petrol versions of the CLS, with the cheapest to run being the CLS 400. It's capable of 38.7mpg and CO2 emissions of 170g/km for an annual tax bill of £205. The other petrol model has a hugely powerful V8 engine, which makes it very expensive to keep on the road. This range-topping CLS 63 AMG manages just 27.2mpg and has CO2 emissions of 231g/km for road tax of £490 per year.

Insurance group

The most economical CLS model, the CLS 220, is also the cheapest to insure. It falls into group 43. The more powerful CLS 350 is in group 48. The CLS 400 falls into group 47, with the hugely powerful CLS 63 AMG firmly in group 50.

Servicing

Mercedes offers fixed-price service plans across its range, starting from £24 a month for two services over two years. You can also buy plans for three and five years.

Warranty

Mercedes offers a three-year/unlimited-mileage warranty to its buyers, which matches the cover offered by its biggest rival, BMW. Although companies like Audi and Lexus offer the same length of warranty, they limit their cover to 60,000 miles, so Mercedes and BMW drivers are better looked after in the long run.

Most Popular

New 2022 Toyota RAV4 Adventure revealed
Toyota RAV4 Adventure
Toyota RAV4
14 Sep 2021

New 2022 Toyota RAV4 Adventure revealed

New Volkswagen Passat set to launch in 2023
2023 Volkswagen Passat
Volkswagen Passat
9 Sep 2021

New Volkswagen Passat set to launch in 2023

Top 10 best small estates 2021
Skoda Octavia Estate
Skoda Octavia Estate
22 Sep 2021

Top 10 best small estates 2021

Tips & advice

View All
Car dashboard warning lights: the complete guide
Car dashboard symbols and meanings
Tips and advice
10 Aug 2021

Car dashboard warning lights: the complete guide

Electric car charging stations: a complete guide
Electric car charging station
Tips and advice
3 Jun 2021

Electric car charging stations: a complete guide

PCP vs HP – which type of car finance is right for you?
PCP vs HP
Tips and advice
15 Jun 2021

PCP vs HP – which type of car finance is right for you?

Average speed cameras: how do they work?
Average speed cameras: how do they work?
Tips and advice
23 Jul 2021

Average speed cameras: how do they work?

Best cars

View All
Top 10 best car interiors 2021
Peugeot 208 hatchback
Best cars
25 Jun 2021

Top 10 best car interiors 2021

Top 10 best electric cars 2021
Volkswagen ID.3
Best cars
12 Aug 2021

Top 10 best electric cars 2021

Top 10 best cheap-to-run cars 2021
Toyota Prius front 3/4 cornering
Best cars
10 Jun 2021

Top 10 best cheap-to-run cars 2021

The UK's top 10 fastest hot hatchbacks
Mercedes AMG A45 - rear
Hot hatches
25 Jun 2021

The UK's top 10 fastest hot hatchbacks