Sneak preview of all-new C-Class

• Mercedes to unveil car on January 18
• Development cars have travelled 15 million miles
• Merc says testing programme was toughest ever

More Information

• More pictures

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Mercedes will unveil its all-new C-Class saloon this Thursday, and is whetting your appetite with this image of a disguised car in the meantime.

In development for the past three-and-a-half years, prototype C-Classes have been put through 15 million test miles in a range of climates from Finland to Namibia. Mercedes says it's the toughest development programme it has ever run.

We've already had time with the car in a studio to photograph the car, so come back to whatcar.com on Thursday, January 18 to see the results and read all about the crucial compact executive.