First Road Trip 470miles - Horrible Efficiency - Cyberbeast w Cyberwheels

[vnr111]

Edit: I’ve updated this post with summaries with screenshots of the details of each leg of this road trip below.

Original post:

I just did our first family road trip this weekend - a 470 mile round trip to northern Michigan.
My model:
2024 Cyberbeast with Cyberwheels delivered 12/24/24.
600mi odometer at trip start.
Rated at 301mi at 100%

Efficency numbers are abysmal. The trip was 235 mi each way - 95% interstate highway. Clean roads, sunny to overcast weather. Average temp of 25 degrees F.

On highway my average speed was around 78mph.

I thought I could get there without even charging since I left at 100% (301 mi rated - or 240mi at 80% winter efficency deficit) and only needed to drive 220 mi. But I had to charge twice just to get there: first 100 miles in at 46% - charged to 75%.
Then 120 miles later at 8% to 66% (wanted some extra juice at the destination).

Here are the stats:

avg: 610Wh/mi.
Total: 471miles
Total used: 287kwh

Is something wrong with my truck? Should I schedule an appt Tesla service?

Edit 1:

I have the details of each leg of the trip (complements of Tessie):

Drive1 Fri 2/7: Metro Detroit to Gaylord, MI
split into 3 total drives -
Leg1:
Metro Detroit to Bay City supercharger
Distance traveled: 94.75mi
kWh used: 59.60kwh
Average: 629wh/mi
Speed: 69mph average, 81mph max
Elevation change: -170feet
Range efficiency: 64% (compared to EPA)
Battery temp initial - 37 degrees F
Battery temp final - 130 degrees F (preconditioning entire way)
Interior temp: 68.4 F avg
Exterior temp: 29.7 F avg

Leg2: Bay City, MI to West Branch, MI (rest stop)
Distance traveled: 46.7mi
kWh used: 28.66kwh
Average: 613Wh/mi
Speed: 73mph average, 83mph max
Elevation change: +213feet
Range efficiency: 64% (compared to EPA)
Battery temp initial - 135 degrees F
Battery temp final - 105 degrees F (no preconditioning)
Interior temp: 68.3 F avg
Exterior temp: 27.2 F avg

Leg3: West Branch, MI (rest stop) to Gaylord, MI supercharger
Distance traveled: 72.5mi
kWh used: 50.5kwh (51% to 8%)
Average: 696Wh/mi
Speed: 75mph average, 85mph max
Elevation change: +489feet
Range efficiency: 56% (compared to EPA)
Battery temp initial - 104 degrees F
Battery temp final - 97 degrees F (preconditioned about 15 mins only)
Interior temp: 67.6 F avg
Exterior temp: 20.3 F avg


Return Trip: 2/9/25- Gaylord MI supercharger to metro Detroit

Return Leg 1: Gaylord, MI supercharger V2 to Bay City, MI supercharger V2
Distance traveled: 119.2mi
kWh used: 68.3kwh (69% to 11%)
Average: 573Wh/mi
Speed: 77mph average, 83mph max
Elevation change: -699feet
Range efficiency: 68% (compared to EPA)
Battery temp initial - 130 degrees F
Battery temp final - 94 degrees F (preconditioned about 15 mins only)
Interior temp: 68 F avg
Exterior temp: 21.6 F avg

Return Leg 2: Bay City, MI supercharger V2 to Metro Detroit
Distance traveled: 53.3mi
kWh used: 68.3kwh (73% to 28%)
Average: 558Wh/mi
Speed: 72mph average, 83mph max
Elevation change: +171feet
Range efficiency: 69% (compared to EPA)
Battery temp initial - 145 degrees F
Battery temp final - 75 degrees F (no preconditioning)
Interior temp: 67.9 F avg
Exterior temp: 25.7F avg

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[AShams]

I get 435 wh/mile on HWY at 70 mph at 46 degree ?

 

[CyberGus]

On highway my average speed was around 78mph.

Aero is murder at those speeds.

 

[vnr111]

I get 435 wh/mile on HWY at 70 mph at 46 degree ?

Is it Cyberbeast with Cyberwheels?
Just wanted to confirm the same specs?

 

[L3it3R]

Sheesh.

Meanwhile I see about 325 Wh/mi on my AWD w/AT tires

 

[tmeyer3]

Strange, my AWD, all stock aero and wheels, averages just shy of 400 wh/mi at 70-75 mph.

Not a beast though, so I know nothing.

 

[mongo]

I just did our first family road trip this weekend - a 470 mile round trip to northern Michigan.
My model:
2024 Cyberbeast with Cyberwheels delivered 12/24/24.
600mi odometer at trip start.
Rated at 301mi at 100%

Efficency numbers are abysmal. The trip was 235 mi each way - 95% interstate highway. Clean roads, sunny to overcast weather. Average temp of 25 degrees F.

On highway my average speed was around 78mph.

I thought I could get there without even charging since I left at 100% (301 mi rated - or 240mi at 80% winter efficency deficit) and only needed to drive 235 mi. But I had to charge twice just to get there: first 100 miles in at 46% - charged to 75%.
Then 120 miles later at 8% to 66% (wanted some extra juice at the destination).

Here are the stats:

avg: 610Wh/mi.
Total: 471miles
Total used: 287kwh

Is something wrong with my truck? Should I schedule an appt Tesla service?

Did you preheat before leaving?
The Supercharging preconditioning chews up energy.
As does speed. If you averaged 78, you.were hitting 80+. Aero energy per mile goes at the square of speed. 80 is 31% more aero load than 70 and 14% more than 75.

Bay City and Gaylord?

 

[vnr111]

80 is 31% more aero load than 70 and 14% more than 75.

Bay City and Gaylord?

Yep, Gaylord and Bay City. - weekend ski trip to Boyne from Metro Detroit. Both V2 chargers (frustrating at 150kw!)

So I did preheat beforehand but I don’t think it did actually, because as soon as we left our home it was “preconditioning” the battery the entire drive to Bay City (1.5 hrs).

that being said my avg wh/mi on the return was 575 - without the preconditioning running for that long.

but yes the speed limit is 75 mph - traffic typically goes 83+. I stayed below the speed of traffic at 78 mph.

we got another road trip planned to Cinci this Friday. Will try to go below 70 mph and see if this truck needs service or not.

wife and kids were not happy about the two 35 minute charging stops just to go 220 miles…

 

[AShams]

Is it Cyberbeast with Cyberwheels?
Just wanted to confirm the same specs?

cyberbeast with updated cyberbeast wheel covers & lightbar installed.

 

[vnr111]

cyberbeast with updated cyberbeast wheel covers & lightbar installed.

Ah ok, so it must be an issue with my truck. I will get this appointment scheduled!

 

[mongo]

Yep, Gaylord and Bay City. - weekend ski trip to Boyne from Metro Detroit. Both V2 chargers (frustrating at 150kw!)

So I did preheat beforehand but I don’t think it did actually, because as soon as we left our home it was “preconditioning” the battery the entire drive to Bay City (1.5 hrs).

that being said my avg wh/mi on the return was 575 - without the preconditioning running for that long.

but yes the speed limit is 75 mph - traffic typically goes 83+. I stayed below the speed of traffic at 78 mph.

we got another road trip planned to Cinci this Friday. Will try to go below 70 mph and see if this truck needs service or not.

wife and kids were not happy about the two 35 minute charging stops just to go 220 miles…

Yep, I know I-75.

The pack was really cold and was getting warmed up for Supercharging all the way to Bay City which chewed up range, but resulted in a faster charge when you got there (maybe, BC has been sub 80kW for me when busy).

BC is getting 8 more stalls, so V4 levels coming soon.

54% to go 100 miles is 664 Wh/mile.
67% to go 120 miles is 687 Wh/mile. That's due to the faster speed, cold weather, and I'm guessing more preconditioning

If you have extra time before you leave, you can do this:
Unplug truck
Put in Supercharger as destination
Go into drive, then park
Hang out in the truck 20 minutes while getting Supercharger level preconditioning.
Plug back in
That'll get the pack warmer before leaving.

 

[mongo]

Oh yeah, and the energy screen will show what is impacting your range. Wind, speed, climate control...

 

[mongo]

For reference, in our Beast with all terrain tires at 50 psi, no covers and no light bar, we got 485 Wh/mile on a 75 MPH test loop in sub 27F temps, without Supercharger preconditioning.

 

[REM]

If you have extra time before you leave, you can do this:
Unplug truck
Put in Supercharger as destination
Go into drive, then park
Hang out in the truck 20 minutes while getting Supercharger level preconditioning.
Plug back in
That'll get the pack warmer before leaving.

I second this. Tesla has already commented that they will be correcting this issue in a future firmware update, so that level 2 charging will be a lot more impactful in preheating the battery during cold weather.

Ah ok, so it must be an issue with my truck. I will get this appointment scheduled!

I don't think it's necessary. Your battery was cold because it didn't properly preheat before the trip. It makes all the difference. Try that trick above and let us know if you have improved results.

Was your route on a long incline? Strong headwinds?

 

[vnr111]

If you have extra time before you leave, you can do this:
Unplug truck
Put in Supercharger as destination
Go into drive, then park
Hang out in the truck 20 minutes while getting Supercharger level preconditioning.
Plug back in
That'll get the pack warmer before leaving.

just to clarify here, do I plug back in while I’m waiting for 20 minutes in the truck?
Or do I wait 20 mins then plug it in?

also, that’s great news about BC getting V4’s! I didn’t see anything on supercharger. info about it.

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