Here's a quick recap of my drive from Berkeley, CA to Bend, OR, and back.
Car: Model Y performance
Cargo: Tesla roof rack + Thule Motion XL
Wheels: TSportline 20" forged TY115 (25.6lbs) + Michelin X-Ice SNOW
Temp: Ranging from 60 degrees F to 20 degrees F
Extra weight: Two people (about 280lbs total), a dog (80 lbs), and a lot of packed stuff (about 200 more lbs)
I started from home with about 80% charge and stopped in Vacaville to top the car off to 100%. This was my first mistake, the charger was so slow and it took about 50 minutes to get about 50% charge to 100. Next time I'm going to do a scheduled departure at 100% at home and find a faster charger en route.
The first leg I was averaging 400 Wh/mile. The headwind was extremely strong. From Vacaville to Red Bluff, I was averaging 450 Wh/mile, with stretches at 500 Wh/mile. The headwind was insane. We were also gaining a slight amount of elevation the whole time. I greatly underestimated the wind factor pushing us. When we got to Red Bluff, we were down to 12% charge with the average of 450 Wh/mile. I charged to 100% because I was freaked out.
The next destination was Mt Shasta, I was worried the colder temps and elevation change would really eat into the charge, but the headwind was a bit less and we made it with 395 Wh/mile. I forget, but I definitely charged to 100 again just in case for the leg to Klamath Falls. This leg from Shasta to Klamath was actually quite calm. Despite the colder temps and elevation changes, we were seeing about 320 Wh/mile averages.
The last leg from Klamath Falls to Bend was scary. It was the longest leg (2 hours, 45 minutes) with cold temps and a lot of elevation. Putting 380 Wh/mile into ABRP told us to drive 50mph to make it with 5% left. There weren't too many options in between (no SC, a few wall plugs, but we went for it). We ended up getting 295 Wh/mile on this lag leg, and ended up in Bend with 40% charge left! What!?
On our way back, I was averaging 290 Wh/mile or less. We did go down in elevation quite a bit, and there was minimal headwind.
It seems like elevation and temperature was very minimal in terms of efficiency, and the headwind was the biggest factor.
Without headwind, we had great efficiency.
Anyway, hope this helps for anyone taking a similar trip or interested in how much a roof box messes with efficiency!
Car: Model Y performance
Cargo: Tesla roof rack + Thule Motion XL
Wheels: TSportline 20" forged TY115 (25.6lbs) + Michelin X-Ice SNOW
Temp: Ranging from 60 degrees F to 20 degrees F
Extra weight: Two people (about 280lbs total), a dog (80 lbs), and a lot of packed stuff (about 200 more lbs)
I started from home with about 80% charge and stopped in Vacaville to top the car off to 100%. This was my first mistake, the charger was so slow and it took about 50 minutes to get about 50% charge to 100. Next time I'm going to do a scheduled departure at 100% at home and find a faster charger en route.
The first leg I was averaging 400 Wh/mile. The headwind was extremely strong. From Vacaville to Red Bluff, I was averaging 450 Wh/mile, with stretches at 500 Wh/mile. The headwind was insane. We were also gaining a slight amount of elevation the whole time. I greatly underestimated the wind factor pushing us. When we got to Red Bluff, we were down to 12% charge with the average of 450 Wh/mile. I charged to 100% because I was freaked out.
The next destination was Mt Shasta, I was worried the colder temps and elevation change would really eat into the charge, but the headwind was a bit less and we made it with 395 Wh/mile. I forget, but I definitely charged to 100 again just in case for the leg to Klamath Falls. This leg from Shasta to Klamath was actually quite calm. Despite the colder temps and elevation changes, we were seeing about 320 Wh/mile averages.
The last leg from Klamath Falls to Bend was scary. It was the longest leg (2 hours, 45 minutes) with cold temps and a lot of elevation. Putting 380 Wh/mile into ABRP told us to drive 50mph to make it with 5% left. There weren't too many options in between (no SC, a few wall plugs, but we went for it). We ended up getting 295 Wh/mile on this lag leg, and ended up in Bend with 40% charge left! What!?
On our way back, I was averaging 290 Wh/mile or less. We did go down in elevation quite a bit, and there was minimal headwind.
It seems like elevation and temperature was very minimal in terms of efficiency, and the headwind was the biggest factor.
Without headwind, we had great efficiency.
Anyway, hope this helps for anyone taking a similar trip or interested in how much a roof box messes with efficiency!