Who said estates aren't fun? We pit the new 469bhp Mercedes-AMG C 63 Estate against the 444bhp AWD Audi RS4 on track! Watch the video to find out which is fastest! <br /><br />Mercedes-AMG C 63 Estate review: http://bit.ly/1GoUxZY<br />Audi RS4 review: http://bit.ly/1HKSlxC
