Model 3 LR 18" v 19" Consumption

[andylaight]

I know there have been plenty of consumption threads. However my 21 Model LR with 19" wheels is in for multiple fixes so I have a courtesy car. The courtesy is a LR with 18" wheels and is the 2020 model. When I use mine to get a range depletion of 1 mile travel v 1 mile of battery usage I need to be under 230 wh per mile. The courtesy I have is achieving this at a rate of 270 wh per mile, significantly better on battery use. I have seen this on my normal routes, so it is as good a comparison as I can get.

Is this usual to see so much variation between the two or is mine maybe just not very good ?

Thanks.