a round trip of 240 miles approx 60-70 mpg comfort was not bad for a long trip it will stay at 70mph on the motorway with no problem it is no jag or push bike either once you get the hang of it i was very surprised how the engine rpm was so low at 70mph for a small engine my honda hrv 4x4 1.6 have always felt needed a 6th gear as at 70mph rpm is just over 3000 the c1 at 70mph was 3100 i have no rev counter so kept a diagnostic odb plugged in over all very pleased with this little car Ron