Question: Are the Wh/mile that people are reporting battery to wheels or wall to wheels? I'm guessing the former.

My 2013 Leaf has averaged 221 Wh/mile battery to wheels, 269 Wh/mile wall to wheels, over the past 2-1/2 years. That's an additional 22% for the charging losses if you're trying to calculate the impact on your electric bill.

The numbers reported are just while the car is on. It does not take charging losses or "vampire drain" (consumption while the car is sitting but not "on") into account.

I had a 40mi drive this morning with round trip of 220 that included about half freeway at 75, and half city. That was just driving normal (but with my mandatory 1000ft elevation loss/climb), not racing, but not grampa-ing it.

I have a Focus EV with a record round trip of 168. That was definitely hypermiling it. What was cool to see this morning was that when I had reached my destination (before heading home), the 3 had used 135Wh/mi, compared to 170 for the Focus. That says a lot about the difference in the two cars' aerodynamics at speed.

@charles
The error bar gets smaller the more miles you put into your calculus. Assuming the car's computer rounds, which seems to be the case with the Model S, your data yields a range of 230.6 to 233.5 Wh/m. Bjorn drove 310 miles at 225 Wh/m utilizing approximately 96% SOC.

@chris
It's close. The other way to figure it out is to extrapolate the number of kWhs available from a full charge. Bjorn's drive yielded 72 kWh, extrapolated--I forget the decimal. Divide 72 by 310 and you get 232.3. So that's the ballpark.

Looks like 18" without covers--check 17:14 to confirm.

Wheels don't really matter for calculating Tesla's rate constant. There are a lot of ways to get the wrong answer on a Model S if one relies on projected range data.

The reason I posted this thread is because I'm realizing for my driving style
1. Range Lost > Miles Driven by a big factor
2. Additional supercharging stops being added as I'm doing road trips

I know a whole bunch of factors affect consumption, but it was more than I was expecting. In my opinion, range prediction in the Model 3 is not sophisticated as it is in the S (as it stands today)

Thank you for the Focus EV comparison. The Model 3 should be more efficient since it is lighter with less aerodynamic drag. I have 3 years/20,000 miles on my Focus EV and 251 wh/mile so I would expect a lower number when I get my 3. Model X with 50/50 driving, 15 months (2 SoCal “winters”) and 17,000 miles we are at 330 wh/mi including 1000 miles towing 4,500+ pounds.

Agree with vmulla. I can only get the 235 Wh/mile "target" with the climate control off in my M3 and at speeds < 60 miles/hr. That would extrapolate to the rated range of 310 miles.Temps here are in the high 40s.

Which gives me great confidence that in 50-80 degree weather the car will be super darn efficient! I estimate this was about 2 cents per mile. Gas would have been about 14 in a 20mpg car at $3/gallon. Woot!

Which gives me great confidence that in 50-80 degree weather the car will be super darn efficient! I estimate this was about 2 cents per mile. Gas would have been about 14 in a 20mpg car at $3/gallon. Woot!

@PhillyGal
"46 degrees outside and a 12 mile (46 minute) drive saw 189 wh/mi "
Sounds like a work commute? Slow and agonizing?
But, didja didja use EAP? If so, was it nice?
Wonderful wh/ml !!!

I am taking a short road trip in the 3 from Grand Rapids, MI to Nashville, TN today. I am tracking a bunch of data, such as: speed, temp, charging times / costs, range and a bunch more. I am also tracking the Wh/mi for the trip each way and will report that.

So far 203 miles in and I am averaging 338 Wh/mi - average speed is probably 65mph (Indiana is slllooow) at 33 degrees outside temp.

## Comments

Nissan Leaf, 2013 model, Vermont - we are at 245 Wh/Mi

(granted, with frosted windows and children dressed as if dog sledding)

My 2013 Leaf has averaged 221 Wh/mile battery to wheels, 269 Wh/mile wall to wheels, over the past 2-1/2 years. That's an additional 22% for the charging losses if you're trying to calculate the impact on your electric bill.

I had a 40mi drive this morning with round trip of 220 that included about half freeway at 75, and half city. That was just driving normal (but with my mandatory 1000ft elevation loss/climb), not racing, but not grampa-ing it.

I have a Focus EV with a record round trip of 168. That was definitely hypermiling it. What was cool to see this morning was that when I had reached my destination (before heading home), the 3 had used 135Wh/mi, compared to 170 for the Focus. That says a lot about the difference in the two cars' aerodynamics at speed.

The sheet is here

https://docs.google .com/spreadsheets/d/1Omek7dO53GdFYe6Gief94RdO94Qx5NK5PxdBhY-YcxA/edit?usp=sharing

One of the things that I learned is that to actually get 310 miles of range (19" Sport Wheel) is that you need to achieve 230 Wh/mile.

234 is the figure I got based on Bjorn's drive to 310 miles.

The error bar gets smaller the more miles you put into your calculus. Assuming the car's computer rounds, which seems to be the case with the Model S, your data yields a range of 230.6 to 233.5 Wh/m. Bjorn drove 310 miles at 225 Wh/m utilizing approximately 96% SOC.

It's close. The other way to figure it out is to extrapolate the number of kWhs available from a full charge. Bjorn's drive yielded 72 kWh, extrapolated--I forget the decimal. Divide 72 by 310 and you get 232.3. So that's the ballpark.

My numbers are with 19"

Looks like 18" without covers--check 17:14 to confirm.

Wheels don't really matter for calculating Tesla's rate constant. There are a lot of ways to get the wrong answer on a Model S if one relies on projected range data.

The reason I posted this thread is because I'm realizing for my driving style

1. Range Lost > Miles Driven by a big factor

2. Additional supercharging stops being added as I'm doing road trips

I know a whole bunch of factors affect consumption, but it was more than I was expecting. In my opinion, range prediction in the Model 3 is not sophisticated as it is in the S (as it stands today)

Drive Fast, Turn Left country...

46 degrees outside and a 12 mile (46 minute) drive saw 189 wh/mi

"46 degrees outside and a 12 mile (46 minute) drive saw 189 wh/mi "

Sounds like a work commute? Slow and agonizing?

But, didja didja use EAP? If so, was it nice?

Wonderful wh/ml !!!

I'm suspecting a slight descent?

So far 203 miles in and I am averaging 338 Wh/mi - average speed is probably 65mph (Indiana is slllooow) at 33 degrees outside temp.

Drew in MI