EPA says 2009 C350 should get 25 hwy. I get up to 32mpg going 75mph. I'm willing to bet that the CLA is lighter, more aerodynamic and more efficient- at least 35 hwy.yeh but thats euro MPGs which are calculated differently than north american MPGs and are often higher.
anyway, i'd love it if the CLA45 gets around 23 to 26 city mpg. I average 24 city now in a much weaker car, and dont want to go much further down regardless of the power of the new car.