Used Mercedes-Benz C-Class (2014-2021) Review

Given the sales, then the C-Class saloon could be the answer to anyone’s ‘what car should I buy?’ question. 

If you’re a company car driver, or even a private buyer, then the C-Class will likely be on your radar, then, and the breadth of choice makes it almost certain there’ll be one that suits your particular needs. 

It’s a premium car that does manage its upmarket status without carrying some of the negative baggage that comes with its key rivals, think BMW and Audi drivers, here. It’s classily understated, being more comfortable and smart than thrusting and overt, and that’s quietly appealing. 

The C-Class saloon also hails from Mercedes-Benz’s pre-MBUX (that’s Mercedes-Benz User eXperience) interiors, so while it’s not lacking in connectivity and technology, it’s all contained in a screen that’s sensibly-sized and easily operated with a rotary controller rather than a touchscreen. It could be ideal if you’re a bit of a technophobe. If that sounds good to you, and it does us, then you’d better hurry, as with the soon to be revealed new C-Class, that’ll change.

If you need more space, the Mercedes C-Class Estate should fit the bill while Mercedes also offers the C-Class Coupe and C-Class Cabriolet.

Such is the breadth of the Mercedes-Benz C-Class range you’ll find something to suit your needs. The C43 AMG 4Matic is quick and capable if performance is your thing, the C220d will chew up huge motorway miles while sipping fuel. 

If you’ve a bit of urban driving at either end of your commute, then there’s a choice of petrol or diesel plug-in hybrids that can drive on electric for short periods of time. That C220d diesel is arguably the best all-rounder though, mixing performance with economy. 

Trims? Again, that’s budget depending, but Sport Line or AMG Line are worth considering because they have less anodyne looks than the basic SE models.

The BMW 3 Series and Audi A4 are the C-Class’s most obvious competition, though the Jaguar XE is worth considering. 

Smart, more mainstream contenders like the Volkswagen Passat, Volvo S60, Alfa Romeo Giulia and Mazda 6 also fit the brief, albeit without quite the brand kudos of the three-pointed star. 

We’d be remiss not to mention the Tesla Model 3, the US electric upstart brand catching the premium market by surprise. It’s a great choice if you live in a city where you’ll be charged to drive a petrol or electric car.

Nothing quite says ‘quality’ like the three-pointed star on the Mercedes C-Class’ grille and steering wheel, so the expectation is of high quality materials, finished beautifully. 

And that, by and large, is the case, in the C-Class. It all looks good, and the material quality is fine throughout, but push some of the trim pieces with any force and there’s a bit of movement that hints the Mercedes isn’t perhaps screwed together as well as you’d like it to be.

Given something like a more mainstream Volkswagen Passat feels more substantial,  that’s a bit disappointing. An Audi A4 betters the Mercedes substantially inside, for solidity and tactility, if not necessarily the design, likewise the BMW 3 Series, but we’re talking degrees here – the C-Class is still a fine place to while away the miles.

It might not have more screens than a futures trader’s desk, but you have to remember that the C-Class came out when the Apple iPhone 5S was the hottest smartphone. 

S models make do with a 7-inch screen, so likely actually smaller than the smartphone screen in your pocket these days, SE and above models getting a larger 10.25-inch display. And do you know what, it’s big and useful enough, indeed, by not dominating the dashboard it’s not a distraction, and – lacking a good deal of the functions other cars offer – C-Class’s infotainment is actually refreshingly simple, and easy to use. 

All have DAB as standard, there’s Bluetooth connectivity, and a central Comand controller rather than a touchscreen, that’s easy to master and navigates simple menus. Upper AMG Line trims gain Comand Online, which adds things like topographic mapping and live traffic, while all come with plenty of USB ports and even a couple of SD card slots.

From 2019 onwards the C-Class comes with Apple CarPlay and Android Auto. All but that S come with a reversing camera, and from AMG Line Edition up the conventional instruments are replaced by a 12.3-inch configurable digital display.

The premium mid-sized saloon has traditionally been a bit more compact inside than its mainstream rivals, and so it proves here. 

Part of that is attributable to the C-Class’s rear-wheel drive layout, which sees the transmission tunnel run the length of the car, but for front seat passengers it’s not really an issue. There’s plenty of space up there, the airy feeling aided by the relatively slim pillars around the windscreen. 

Those in the rear aren’t so well accommodated, the C-Class’s sloping rear roofline meaning those over 5ft 10 will find it lacking in headroom, while there’s not a great deal of leg or foot room under the front seats, either. That rear bench really is only suitable for two, the middle rear seat not only flat and high, but perched high in the middle you’ll have little place to put your feet. 

Two ISOFIX seat mounts are fitted on the outer seats. The rear doors have door bins in them, with the central armrest being lidded for storage. Up front there’s a useful cubby with a split lid between the front seats a lidded compartment in front of the automatic transmission selector, a glovebox and a pair of cupholders and door pockets. 

The boot isn’t quite as big as some rivals, but 455 litres is enough for most users, the rear seats folding in a 40/20/40 split-fold manner, creating a large, relatively flat through load space. 

You lose some bootspace with the plug-in hybrid models, the volume dropping to 300 litres, the battery adding quite a pronounced hump in the boot floor. The boot access is okay for a saloon, and if you want a more capacious, practical C-Class then there’s always the estate model. 

There’s a sizeable range of engine choices with the C-Class saloon. Indeed, ignoring the C63’s V8, there’s eight engine options available to you, from a four-cylinder 1.6-litre petrol right up to the 3.0-litre V6 in that AMG C43 model. 

A 1.5-litre petrol, badged C200 adds a EQ boost system adding 14PS worth of electric power, via a mild hybrid system, to help improve both economy and performance. 

If you’re after proper electric power, Mercedes-Benz offers a pair of plug-in hybrids, one the C300 e EQ Power, which mates a 211PS turbocharged petrol four-cylinder engine with a 122PS electric motor for a combined system output of 320PS and a huge 700Nm of torque. 

The second plug-in hybrid sees the same 122PS electric motor join a 194PS turbodiesel, combined it offers 306PS and the same 700Nm of torque. They offer electric only driving, as well as a long range. And when both the diesel and electric motor are working in unison, it's quick, with the C300 de able to reach 62mph in 5.6 seconds. 

Tempting as those hybrids are, they’re expensive, and the conventional engines don’t trail them too far on performance, with the diesel C300 d  and C220 d getting from 0-62mph in 5.9 and 6.9 seconds, respectively.

Only a couple of C-Class models come with a standard six-speed manual. A nine-speed automatic is standard elsewhere and it shifts quickly and smoothly.

The C-Class’s focus on comfort is apparent in relation to refinement. It’s quiet inside, as you’d hope in an upmarket saloon. At higher speeds you might get a bit of wind noise from around the door mirrors, and on rougher road surfaces there’s a bit of tyre noise, but that’s only really noticeable on cars with the larger wheels and tyres.

Refinement improved considerably when the car was refreshed in 2018, Mercedes-Benz finally replacing its old 2.1-litre turbodiesel with a smoother new 2.0-litre unit. It’s not the quietest diesel, but it’s significantly more refined, in relation to both noise and vibration than the engine it replaced. 

Cruising around in EV mode in the EQ Power plug-in hybrids underlines the C-Class’ fine refinement. They’re silent at town speeds and hushed even when their combustion engines kick in to assist.

Mercedes-Benz can genuinely lay claim to inventing a lot of the safety systems that are now commonplace across all cars. 

Safety kit includes dual stage driver and passenger front, pelvis airbags, a driver’s knee bag, and a full curtain airbag for front and rear passengers. There’s even an active pop up bonnet to help protect pedestrians in an impact and you get automatic emergency brakes that should stop you having an impact all together.

There’s also the option of a Driving Assistance Package with the Premium or Premium Plus model lines, which means the Mercedes can drive itself on the motorway and in slow moving queues of traffic. When it was tested in 2014, the C-Class gained a full five-star Euro NCAP crash test rating.

Choose one of those plug-in hybrid models and you’ll add as much as 34 miles of electric-only range to your C-Class. If you have a short commute, this could mean you can do it using cheap electric power alone. It also means both the diesel and the petrol hybrid models are free from paying tariffs like the London Congestion Charge.

With the C-Class spanning a huge spectrum of prices and performance the cost to insure it will vary wildly. The hybrids and that AMG C43 will attract the highest premiums, with the huge volume models doing a lot better. 

The C200 d models are the cheapest of the lot to insure, they sit in Group 24 while a C63 S will cost you double, sitting in Group 48 insurance.

A fleet favourite, the C-Class performs well when it comes to tax. Those hybrids are the best here, but the C220 d will keep the taxman at bay, it comfortably sneaks under the £40,000 penalty tax banner in SE, Sport or AMG Line Edition (just) and emitting 134g/km, costing £540 for the first year and £150 thereafter. 

Go for a V8 C63 S and you’ll pay a lot more  starting with an £1850 initial payment and followed by a hefty £475 premium charge every year after that. 

S versions of the C-Class  come with a manual transmission, air conditioning, DAB and a man-made leather interior. We’d avoid them though, because they look plain and miss out on key equipment. The C-Class is also much better when fitted with an automatic gearbox. 

SE models are the real starting point in the range. They come with a larger 10.25-inch infotainment screen, 17-inch alloys, a reversing camera, sat nav Active Parking Assist and electrically folding and dimming rear-view mirrors. Unfortunately, they still look very plain on the outside. 

Sport Edition models get the looks that the Mercedes C-Class deserves. Their 18-inch wheels fill out the car’s arches, they get lowered suspension along with powerful (and cool looking) multi-led headlights. Inside, the vinyl ‘leather’ makes way for the real deal. 

AMG Line Edition models take the visuals a step further thanks to their tinted windows and slightly more aggressive body kit. Inside, they also get sports seats and a 12.3-inch digital display replaces the conventional dials behind the steering wheel.

AMG Line Night Edition Premium cars look even moodier. They have big 19-inch alloy wheels and get  gloss black exterior highlights. Inside, the seats and steering wheel slide into your preferred position electrically  you get a connected sat-nav system – which has live traffic updates – and wireless phone charging 

Finally, there is the AMG Line Night Edition Premium Plus model. It looks just as distinctive and adds yet more kit including a 360-degree camera and a stonking Burmester surround sound stereo. These models also get a glass roof, which makes the Mercedes feel light and airy inside.