The revised car, which will make its public debut at next month's Geneva Motor Show, features a handful of subtle design refreshes on the outside, while the interior remains pretty much the same.
The two hybrid models will make use of a new hybrid system, combined with a pair of four cylinder engines available in either petrol or diesel form. The new hybrid system is 40bhp more powerful than the old one, adding around 120bhp overall, but Mercedes are keeping quiet on the combined output of the petrol and diesel hybrids for now. That being said, the petrol turbo 2.0-litre engine is thought to put out 208bhp, while the turbo 2.0-litre diesel's figure is expected to be closer to 191bhp.
Gallery: Mercedes C-Class Facelift
What we do know for certain is that both cars' electric range will increase to over 19 miles, with the lithium ion battery’s capacity rising from 6.4kWh to 13.8kWh.
A trio of diesel options fitted with Mercedes' new 2.0-litre four pot – the 148bhp C200d, 192bhp C220d and 241bhp C300d; and three petrol options – the C180, C200 and C300 make up the model lineup. The C180 uses a 154bhp 1.6-litre turbo engine, while the C200 and C300 both come with a new 2.0-litre engine. The C200 will have a little electrical assistance, helping it produce 188bhp, plus 17bhp with the alternator acting as an electric motor to improve performance. The C300 puts out 241bhp with just the petrol engine, there's no mild-hybrid system in that model.
Across the range, there will be a whole host of optional extras, including a new 12.3in high-definition instrument display, a revised multi-function steering wheel with touch-control pads, a 10.25in infotainment display similar to that seen in the new S-Class, and a touchpad controller rather than the touch screen system used in the new A-Class.
Three improved trim levels, SE, Sport and AMG Line, and both saloon and estate body styles will be available when sales for the updated C-Class begins in March. Prices will start at around £30,000. First deliveries will take place in August.