Mercedes will officially unveil the C-Class on January 18. Last week Mercedes unveiled some "official spy shots" of the C-Class from the comfort testing program.Over a period of three and a half years, the prototypes and pre-production models have clocked up a total of more than 24 million test kilometres all over the world. The tests performed on the test rigs at the Mercedes-Benz Technology Centre in Sindelfingen were equally extensive and intensive.

Following a series of systematic long-distance tests in everyday traffic and at proving grounds, during which the cars were subjected to such high loads and stresses that they aged at a vastly accelerated rate, the 18-week "World Test" was one of the highlights of the systematic test marathon for the new C-Class. Four fully equipped pre-production vehicles successfully came through the tests in Germany, Finland, Dubai and Namibia. Here, under widely fluctuating climatic and topographic conditions, all of the vehicle components and systems – from the diesel particulate filter to the seats, from the door hinges to the shock absorbers – were tested once again.

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