I have had my 5 for 3 months now (Standard range Excite). The first 3 months have worked out at 4.6 mpkwh overall (according to the screen), but so far I have driven only 1000 miles in total. However, I am puzzled by the fact that individual journeys register about 4 to 4.2 mpkwh. I assume that this is because I am making quite short journeys , typically about 10 miles or so (Isle of Wight remember), and this leads to an underestimate on individual trips. Can anyone confirm that this is so? When I have managed a slightly longer trip and got up to about 20 miles then 4.5 ish seems to be the order of the day. The temperature over these past 3 months has been good overall, typically in the teens and twenties. However, I have noticed in the last 2 days, when there has been frost on the car and the air temperature has been as low as 3 degrees, that a 10 mile journey which has typically been around 4 mpkwh has dropped to 3.5. This was with lights on and more use of the AC. I assume that this is the shape of things to come over the winter. It will be interesting to monitor and see what effect this has on the overall figure. I won't reset for now, I want to see what happens over a whole 12 month period. Interesting stuff I think.