We hear a lot talk about it’s cold/it’s hot so I have to idle truck, so I can’t get good MPG. We completely understand the need to be safe and comfortable and the need to be get proper rest. However look at our monthly Fleet average for 2012. There is no noticeable difference for summer or winter? Cold months or hot months not much difference in the fleet average.
This shows that on average the season and weather does not affect the overall average and should not affect your mileage.