I live in Colorado, my 2023 Model Y has about 13k miles and I have made several trips up into the mountains. I am noticing a trend, the Trip Projection is extremely accurate going up the Rocky Mountains, and not accurate going down.
I live near Boulder Colorado at elevation 5860' and Breckenridge CO is at 9600'. On my last summer trip to Breckenridge I left at 100% SOC and arrived at 65% exactly like what the Trip Projection predicted. The trip started in the 70's near Boulder and finished at 67 degrees F in Breckenridge. If I am reading the Trip Projection correctly (see image) it was projecting 9.5% consumption for elevation on the trip up, and it ended up using 10.2%. I averaged 286Wh/mi on the way up which is think it is amazing considering I gained 3,740 elevation and traveling at 70mph of most of the trip.
Going down from Breckenridge the Trip Projection was off by a total of 10.5% (see image). I started the down trip in the 60's and ended at 72F. I average 132Wh/mi.
I am totally amazed that I was able to get 209Wh/mi for the round trip covering 182 miles of extreme elevation changes, I am not mad about the car's efficiency, I am just a little concerned that I can't trust the Trip Projection when descending from a high elevation.
Any ideas why it is off so much?
I live near Boulder Colorado at elevation 5860' and Breckenridge CO is at 9600'. On my last summer trip to Breckenridge I left at 100% SOC and arrived at 65% exactly like what the Trip Projection predicted. The trip started in the 70's near Boulder and finished at 67 degrees F in Breckenridge. If I am reading the Trip Projection correctly (see image) it was projecting 9.5% consumption for elevation on the trip up, and it ended up using 10.2%. I averaged 286Wh/mi on the way up which is think it is amazing considering I gained 3,740 elevation and traveling at 70mph of most of the trip.
Going down from Breckenridge the Trip Projection was off by a total of 10.5% (see image). I started the down trip in the 60's and ended at 72F. I average 132Wh/mi.
I am totally amazed that I was able to get 209Wh/mi for the round trip covering 182 miles of extreme elevation changes, I am not mad about the car's efficiency, I am just a little concerned that I can't trust the Trip Projection when descending from a high elevation.
Any ideas why it is off so much?