EVforRobert wrote: ↑
Wed May 05, 2021 2:13 pm
I don’t see any way to discover the percentage highway and city in the interface. I have taken freeway trips totaling 700 miles and the rest mixed.
In my case my daily/local use is almost never highway (maybe about 2-3 miles a day are highway, but only one exit.
I have much better efficiency on trips than local use. I chalk this up to the car being very aerodynamic, the fact that I don't really push the speed too much (I generally set the cruise to about 5mph above), and the fact that for non-highway use, there tends to be a lot of start/stop and having to accelerate the heavy car over and over again, which winds up being more inefficient than the aerodynamic drag at highway speeds. Plus you have the inefficiency of getting the cabin to comfortable temperature at the beginning of a trip which is a larger percentage of each trip when driving locally versus a long trip. This is not technically a statement on the efficiency of the car in highway vs. city, but from a purely practical standpoint, it matters.
My lifetime efficiency (per TeslaFi) is 261 Wh/mile. But for a particular road trip I've taken 4 times now, my efficiency has been 210, 222, 222 (again!), and 265 Wh/mile. These were in July, July, September and March (hence the lower efficiency). Yes, part of that is due to the fact that two of the three were in the summer, but if for example I look at the month prior and following the 210 trip (July 2019), my efficiency was 247 Wh/mile in June and 265 Wh/mile in August. During July itself, in addition to the 210 Wh/mile trip, my local trips were 264, 253, 244, 250, 239, 229, 249, 226, 199 and 350.
Note: I put my aero wheel covers on for road trips and take them off for local.