Poll: Model 3 Efficiency (Battery-to-Wheels)

[Arpe]

Has any racers or lead-foot drivers been able to keep above 300 Wh/mile for lifetime efficiency? Thanks!
The poll has no entries above 300 yet...

 

[SageBrush]

Wow mine is not efficient at all... Im the only 280-299 vote. Although I do commute 90% of my driving at 80Mph with the heater or AC running to keep the interior at 68 degrees. Aero wheels with the covers off.

That is amazingly good efficiency.

 

[Zythryn]

225 Wh/mile lifetime efficiency over 3000 miles.
Aero wheels without the covers. We got the car in February. If we didn’t have the couple of cold/snowy months we would be down around 210.

Highway driving around here (when I can find one that isn’t under construction) is 65mph.

 

[LBusDoor90]

My daily commute is on local roads and semi-highways where 30-50 mph speeds are typical. I voted for 200-219 which is where it falls when using the heat or A/C but when I just use the fan, I often pull into the parking lot at work or my driveway with 180 Wh/mile efficiency.

 

[jsmay311]

Has any racers or lead-foot drivers been able to keep above 300 Wh/mile for lifetime efficiency? Thanks!
The poll has no entries above 300 yet...

Ha. Yeah... I definitely didn't expect such a narrow band of votes when I originally created the poll. I figured there were be more outliers. Every vote so far has been in the 200-300 Wh/mile range except for one person in the M3OC poll that reported <200 Wh/mi. (Although I bet if this was winter time, we'd see some higher numbers.)

Here are the combined results from the TMC and M3OC polls thus far:

 

[gilscales]

Have 4,000 miles of mostly road trips from southern to northern Ca, 266 average, lots of hills and high speeds, very happy with that.

 

[SageBrush]

I took the car out for a 10 mile each way drive with Cruise Control (CC) set at 60 mph. About 700 feet up net, and then ... down. Fan at '4'
180 Wh/mile average.

Level road driving may be a bit better. I cannot tell yet when the car is coasting so CC may be somewhat less efficient (but oh so convenient.)

 

[SageBrush]

First road trip!

250 miles, starting at 6400 feet elevation and ending at 6300.
Cabin pre-cooled, then set to 73F. Very little A/C energy use.
Most of trip at 69 mph. I'm unsure about wind (sorry!)

201 Wh/mile !
If this is typical, I'm going to be astounded. Just don't expect the same result at sea level.

 

[Brentt]

5000 miles in five weeks, and improving. At 4000 miles it was in the 250’s and is now in the 240’s.

 

[SageBrush]

I drove through the city of Abq, NM to charge up the car for a trip tomorrow ... and to get some data on charging rates.
A/C on the return trip set at 73F driving into the sun and to cool off the car after sitting at the Supercharger.
Light traffic, no friction braking, some regen. 27 miles total.
R/t energy consumption was 157 Wh/mile = 6.37 miles/kWh

 

[Cattledog]

245 in 2,500 miles, 18" aeros, lots of freeway at 70+, Texas (AC).
345 in P85 Model S, same driving conditions and habits
My wife is over 400 in our Model X

 

[Robocheme]

For the first 3200 miles with regen at low and a third of the miles at ~75 mph, it was around 284 wh/mile. After I switched to standard regen, the efficiency for the last 600 miles increased to ~230 wh/mile (very little freeway miles). So, two reasons for the efficiency increase, higher regen and less freeway miles.

 

[SageBrush]

For the first 3200 miles with regen at low and a third of the miles at ~75 mph, it was around 284 wh/mile. After I switched to standard regen, the efficiency for the last 600 miles increased to ~230 wh/mile (very little freeway miles). So, two reasons for the efficiency increase, higher regen and less freeway miles.

I have a love/hate thing going with regen:

Love, because it is so much better than friction braking;
Hate, because ~ 40% of my of kinetic energy is lost to heat

Since my traffic and driving habits usually let me coast down to the speed I want I find that the low regen setting gives me better fuel economy. The high regen setting interferes with my coasting. Perhaps with time my foot would learn how to coast at will in the high regen setting but it sure is not true for now.

 

[Vintre]

147 lifetime over 1500Kms (900 miles).

 

[insaneoctane]

I have a love/hate thing going with regen:

Love, because it is so much better than friction braking;
Hate, because ~ 40% of my of kinetic energy is lost to heat

Since my traffic and driving habits usually let me coast down to the speed I want I find that the low regen setting gives me better fuel economy. The high regen setting interferes with my coasting. Perhaps with time my foot would learn how to coast at will in the high regen setting but it sure is not true for now.

My foot is mastering how to coast and time different traffic stopping distances. I would say that 1 month of ownership got me 90% effective on this subtlety.

 

[PoitNarf]

147 lifetime over 1500Kms (900 miles).

Pics or it didn't happen! What have you been doing, driving downhill the whole time?

 

[SageBrush]

My foot is mastering how to coast and time different traffic stopping distances. I would say that 1 month of ownership got me 90% effective on this subtlety.

I take you found the power meter ?

 

[jsmay311]

147 lifetime over 1500Kms (900 miles).

Pics or it didn't happen! What have you been doing, driving downhill the whole time?

Certainly that number must be 147 Wh/km. So 237 Wh/mile.

 

[jsmay311]

Since my traffic and driving habits usually let me coast down to the speed I want I find that the low regen setting gives me better fuel economy. The high regen setting interferes with my coasting. Perhaps with time my foot would learn how to coast at will in the high regen setting but it sure is not true for now.

Acknowledging that there may be some safety concerns with doing so... do any Tesla drivers shift into Neutral when they want to coast?

 

[PoitNarf]

Certainly that number must be 147 Wh/km. So 237 Wh/mile.

Ah yes, good call...