The smaller supercharged petrol gives an average of between 39.8mpg and 38.7mpg. However, the V6 models are noticeably worse, ranging from 30.4mpg down to 28.5mpg. Diesel fares far better, starting at 49.6mpg and dropping to a respectable 38.7mpg for the most powerful. The C02 emissions from the diesel are also better, especially the smallest engine which emits 149g/km.
In early 2008 Mercedes released the Blue-efficiency versions of the smallest petrol and diesel engines. These noticeably improved fuel economy, with the C180K giving 42.8mpg and the C200 CDI 55.4mpg. CO2 emissions were also improved. These cars are worth looking for but attract a premium.
Servicing costs for this type of car are never going to be cheap, but the C-Class is on a par with other compact executives.
The C-Class has performed well to date, and owners are impressed with the quality and durability of the car. However, some issues have arisen.
Early cars suffered an automatic gearbox issue, with long hesitations during gearchanges. This should have been fixed with a software update, which any franchised dealer could carry out. Check that it has been done.
The electronic key can stop working, stranding owners. Sometimes it can stop working altogether, or operate intermittently. Cars should come with more than one key, and both rarely fail. Replacement keys are expensive, so check there’s a spare key before you buy.
The estate version has a garage mode, so it doesn’t open the tailgate fully when there’s restricted headroom. However, this can stick, giving you restricted access to the boot
The engine’s crankshaft can cause a problem that results in a loss of engine power, or the engine refusing to start. This is widely known and covered by a recall. Other recalls include another software problem, which can paralyse the car. Again, a dealer can resolve the issues, or tell you if it’s been already fixed.
Which used Mercedes C-Class Estate should I buy?
The SE and Elegance models are more in the traditional Merc mould, with a three-pointed star on the bonnet and comfort-orientated suspension settings. Sports cars are more contemporary C-Class, with an aggressive air, lowered and stiffer suspension settings and the Mercedes badge set into the radiator grille. Sports cars are more agile but not overly firm, while SE and Elegance models are smoother, but with some body roll.
The entry-level SE trim gets alloys, climate, Bluetooth, electrically adjustable seats and MP3 input, while Elegance ups the ambience with wood trim, chrome and auto wipers. Sat nav wasn’t standard on any model, along with leather, so look out for cars with these desirable options.
Petrol engine options range from supercharged 1.8-litres (154bhp or 182bhp), to V6s of 2.5-, 3.0- and 3.5-litres (204bhp, 231bhp and 272bhp respectively). There are three CDI diesels – 134bhp and 168bhp 2.1-litres (badged C200 and C220), or a 221bhp 3.0 (C320). All are up to the job, but the C220 CDI strikes the best balance between performance and affordability and enjoys better resale values.
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