My C220CDI is 4 months old and approaching 5000 miles, the MPG figures on the computer are getting worse. My commute is a 20 mile mix of twisty country road, urban stop start and a 4 mile dual carriage way. In July / august with about 1500 miles the computer was showing 40 / 41 mpg from start! Today it's showing 36 mpg with no significant change to the traffic conditions or my driving style. I have the Eco stop start function working, the air con is switched OFF! The car is a sport estate with auto box and running in comfort mode.
I traded in a C200CDI sport auto, non blue efficiency and 5 speed box against this new car, the 200 was shown around 37 mpg on the same route.
Am I right to be concerned? I know the Mercedes quoted mpg figures are never completely true but considering the spec of the C220 compared to the old C200 I was hoping for an improvement not a decrease in mpg.
I traded in a C200CDI sport auto, non blue efficiency and 5 speed box against this new car, the 200 was shown around 37 mpg on the same route.
Am I right to be concerned? I know the Mercedes quoted mpg figures are never completely true but considering the spec of the C220 compared to the old C200 I was hoping for an improvement not a decrease in mpg.