Combined cycle fuel economy for the pair is listed at 6.2 and 6.4 L / 100 km respectively. (motoring.com.au)
Mercedes claims combined cycle fuel economy of 34.1 mpg on the European test cycle, which typically delivers higher numbers than the U.S. test. (autoweek.com)
It offers a combined cycle fuel economy figure of 5.3 L / 100 km and CO2 emissions of 122g / km, albeit on a diet of 95 - 98 RON premium unleaded petrol. (motoring.com.au)