Last night I drove 3 miles across the town and according the onboard computer managed to do 61mpg. On the way I had to stop 4 times at the traffic lights and max speed was 30mph. Using engine braking wherever possible really helps to keep the consumption of a feather weight car like my smart Roadster (round 1700 pounds) very low even at urban speeds but once you raise the speed from 30mph the mpg will drop quite drastically. This morning I cruised 50 miles down the motorway at 65mph and managed to do 39mpg.
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