By clicking a retailer link you consent to third party cookies that track your onward journey. If you make a purchase, Which? will receive an affiliate commission which supports our mission to be the UK's consumer champion.

Mercedes-BenzC-Class (2014-2021)

Used only
Large
Petrol/Diesel/Mild hybrid

£12,238Typical price

Test score

where to buy or sell

The version of this car that we've reviewed might not be available to buy through all listed retailer links. For more options, see our guides on where to buy a car and how to sell a car.

Sign up to unlock the full expert review

The Mercedes-Benz C-Class has always faced a tough battle with its closest rivals, the Audi A4 and BMW 3 Series. This generation C-Class large saloon (2014-2021) is aimed at a younger audience, with its cutting-edge technology, engaging drive and plush interior. But where is your money best spent? Find out in our full Mercedes-Benz C-Class review.

pros

Content has been blurred out, please log in to view.

cons

What's included?

What is it?
What's it great at?
What's it like to drive?
How reliable is the Mercedes-Benz C-Class (2014-2021)?
How comfortable and spacious is it?
How economical is it to run?
How safe is it?
Is there anything I should look out for?
Should I buy it?

Full Access first month £5, then £10.99 per month, cancel at any time

KEY TEST RESULTS
Comfort and practicality
Brand reliability 0-4 years

Jan 2023Last checked by Which?
Jun 2019First reviewed by Which?
May 2014Released

The overall Which? test score is made up of the following star ratings, all determined by our rigorous lab tests.

How we test cars

19 Oct 2023

Ease of driving

Overall
Visibility
Smoothness of power delivery
Driving stability
Cabin layout

How we test ease of driving

To find out how easy a car is to drive, we assess cars across a number of areas from visibility and handling to the layout of the cabin and how smoothly the engine delivers its power.

Performance

Overall
In-gear acceleration
Brakes

How we test performance

We test braking distances and whether the effectivess of the brakes fade with repeat use. Performanc is based on in-gear acceleration.

Comfort and practicality

Overall
Entry and exit
Seat comfort
Ride quality
Quietness
Seat space
Boot space (large cars, SUVs and MPVs)

How we test comfort and practicality

Comfort and practicality includes how easy it is, or not, to get in and out of the car and the maximum height of occupants. We also measure road, wind and engine noise and assess how well the car deals with bumps from large potholes to jittery surfaces like cobble stones.

Euro NCAP

How we test euro ncap

Any car that receives a rating of three stars or less from Euro NCAP is made a Don't Buy. If a car has been available for more than four years and has not been tested by Euro NCAP, it cannot be a Best Buy.

Which? safety

Model reliability 5-9 years

How we test model reliability 5-9 years

How reliable this car is, based on the real life feedback of current owners as collected in our annual Which? car survey. We divide all reliability feedback into three age groups: cars aged up to four years, five to nine years, and 10 to 15 years.

Brand reliability 0-4 years

Overall
Electric car reliability
Plug-in hybrid reliability
Petrol reliability
Diesel reliability

How we test brand reliability 0-4 years

Our reliability ratings are based on the feedback from tens of thousands of UK motorists, as collected in our annual Which? car survey. We divide all reliability feedback into three age groups: cars aged up to four years, five to nine years, and 10 to 15 years.

Brand reliability 5-9 years

Overall
Diesel reliability

Brand reliability 10-15 years

Overall
Petrol reliability
Diesel reliability

General
Class	Large
Luxury	No
Convertible	No
Availability	Used only
Used price	£12,238 - £27,210
Fuel type	Petrol/Diesel/Mild hybrid
Tested fuel efficiency	40.9 to 65.7mpg
Length	4,686mm
Width (excluding wing mirrors)	1,810mm
Width (including wing mirrors)	2,025mm
Height	1,442mm
Driver max height
Second row passenger max height
Boot space with seats up
Boot space with seats down
Number of seats	5
Folding rear seats	Yes
Isofix attachments	Yes
Turning circle	11.25 m
On sale date	01 May 2014
Lowest pence per mile cost	£10.55

Latest tested engine
Engine name	C220d 9G-Tronic
Fuel type	Diesel
Capacity and power	2-litre (194hp)
Transmission	9-speed automatic
Driven wheels	Rear-wheel-drive (RWD)
Fuel tank capacity	41 litres
Tested fuel economy: City / Out of town / Motorway (mpg)
Tested fuel economy: Combined (mpg)
Cost per mile	12.78p per mile
Cost of filling tank	£63
Monthly fuel cost
Annual fuel cost
NOx level	Extremely Low (trace)
CO level	Extremely Low (trace)
CO2 at tailpipe/tank-to-wheel (TTW) (g/km)	137
Well-to-wheel (WTW) CO2 (g/km)	165
Official fuel economy: NEDC	61.4
Official Euro emission level	Euro 6d-Temp
Braked tow load (KG)	1800kg
Unbraked tow load (KG)	750kg
Engine test date	04 September 2018
Test programme	2017

Engine two
Engine name	C200 9G-Tronic
Fuel	Petrol
Capacity and power	1.5-litre (184hp)
Transmission	9-speed automatic
Driven wheels	Rear-wheel-drive (RWD)
Fuel tank capacity	41 litres
Tested fuel economy: City / Out of town / Motorway
Tested fuel economy: combined mpg
Cost per mile	16p per mile
Cost of filling tank	£59
Monthly fuel cost
Annual fuel cost
NOx level	Very low
CO level	Low
CO2 at tailpipe/tank-to-wheel (TTW) (g/km)	160
Well-to-wheel (WTW) CO2 (g/km)	188
Official fuel economy: NEDC	46.3
Official Euro emission level	Euro 6d-Temp
Braked tow load (KG)	1800kg
Unbraked tow load (KG)	710kg
Engine test date	09 October 2018
Car test programme	2017

Engine three
Engine name	C250d Avantgarde 7Gtronic plus
Fuel type	Diesel
Capacity and power	2.1-litre (204hp)
Transmission	7-speed automatic
Driven wheels	Rear-wheel-drive (RWD)
Fuel tank capacity	50 litres
Tested fuel economy: City / Out of town / Motorway
Tested fuel economy: combined mpg
Cost per mile	12.27p per mile
Cost of filling tank	£76
Monthly fuel cost
Annual fuel cost
NOx level	Medium
CO level	Low
CO2 at tailpipe/tank-to-wheel (TTW) (g/km)	130
Well-to-wheel (WTW) CO2 (g/km)	158
Official Euro emission level	Euro 6b
Braked tow load (KG)	1800kg
Unbraked tow load (KG)	750kg
Engine test date	20 January 2016
Car test programme	2012-2016

Engine four
Engine name	C220 CDI BlueTEC Avantgarde
Fuel type	Diesel
Capacity and power	2.1-litre (170hp)
Transmission	6-speed manual
Driven wheels	Rear-wheel-drive (RWD)
Fuel tank capacity	41 litres
Tested fuel economy: City / Out of town / Motorway
Tested fuel economy: combined mpg
Cost per mile	10.55p per mile
Monthly fuel cost
Annual fuel cost
NOx level	Low
CO level	Low
CO2 at tailpipe/tank-to-wheel (TTW) (g/km)	114
Well-to-wheel (WTW) CO2 (g/km)	139
Official Euro emission level	Euro 6b
Braked tow load (KG)	1800kg
Unbraked tow load (KG)	750kg
Engine test date	09 July 2014
Car test programme	2012-2016

Suggested Alternatives

Lexus

LS (2012-2017)

Used only
Large
Full hybrid

£12,579Typical price

Test score

Renault

Espace (2003-2012)

Used only
MPV
Petrol/Diesel/Mild hybrid

£750Typical price

Test score

Seat

Altea (2004-2015)

Used only
MPV
Petrol/Diesel/Mild hybrid

£1,011Typical price

Test score

How to find cheap car insurance
Find out ways to get cheaper car insurance quotes from price comparison sites and how to haggle with car insurance companies to save money
Best electric cars for 2024
Our independent lab tests reveal the best electric cars with enough range to go the distance.
How we test cars
Every car we review is subjected to hundreds of tests in our lab and on the road. Find out how our tests help you choose the best car, and avoid the worst.

All new and used car advice

Mercedes-BenzC-Class (2014-2021)

where to buy or sell