travelininstyle
Active Member
Here is what has been the best recorded mileage returned in my 55 plate C180K Sports Coupe,petrol and driven in 'c' comfort mode.The journey was about 40 miles to Harrogate,on a warmish day,which will help.The actual mileage was actually 48.3mpg - but by the time swmbo,had figured out how to take the picture with the new camera/phone,whilst idling,it had lost 1.1mpg off the clock - whats the best other members have managed - incidentally I only use standard Shell Unleaded petrol - and whilst I experimented with the higher octane grade for a couple of months,the benefits were not really there.
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