Lifetime Average Wh/mi

[Jason S]

4334 miles, 351 Wh/mi

Slightly higher for last 2900 miles (the Trip A) @ 360 Wh/mi

[aviators99]

435 over 1600 miles. It's been chilly in Oregon in the 30s, but no where near Minnesota chilly. Not sure why my energy usage is so high.

I assume you have regen on? That does seem high. Do you go up many hills every day?

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I've enjoyed being able to keep an eye on my lifetime average energy use, as I haven't ever reset Trip B. After one month of ownership in California and around 1500 miles my average is 326Wh/mi. How are you faring?

I'd love to see a future firmware update that lets me use my trip meters for trips, but still provides access to my lifetime average. I'd also appreciate an automatic trip meter (one that resets when you exit the vehicle), and a per-driver meter.

By the way, don't count on being able to keep track of this by relying on Trip B. When service checked something out in my car, they somehow reset the trip meters

[rcc]

I'm getting about 375 watts / mile over >1800 miles.

It's high because I do two trips in the morning so the battery has to warm up twice and I typically have to run front and rear defroster for a while on the first trip.

I expect the number to drop as it gets warmer. I've seen 300-315 driving in warmer temps (~55-65). It'll be interesting to see if cooling in 80-90 degree temps is less power-hungry than warming in 30-45 degree temps.

[markb1]

Sounds like Tesla was a bit off in their 300 Wh/mile estimate:

Model S Facts | Tesla Motors

And presumably that average was supposed to account for charging inefficiencies.

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And their calculator says it only uses 280 Wh per mile!

Tesla Charging | Tesla Motors

[brianman]

426 lifetime, and fairly stable at that.

[tdiggity]

Sounds like Tesla was a bit off in their 300 Wh/mile estimate:

Model S Facts | Tesla Motors

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This is probably true at 55mph

[dsm363]

I think ideal is based off of 265 Wh/mile (what I heard at least). If we only have access to 81.5 kWh from ChadS's excellent calculations then that equals 307 ideal miles which is close.

[Sparrow]

288 Wh/mile for a bit over 1900 miles.

[FlasherZ]

435 over 1600 miles. It's been chilly in Oregon in the 30s, but no where near Minnesota chilly. Not sure why my energy usage is so high.

Mine is high (> 400) because of where I live. Every trip in my Model S starts and ends with a ~2 mi. trip over some hills, around a short group of turns, and by the time I make it to the state highway I've started at 600-800 Wh/mi. If, from there, I only go to the local town, I can't really recover it.

If I go to St. Louis (add 40 mi of highway driving) or so I can get it down to 325 Wh/mi or so.

[GeekGirls]

Sounds like Tesla was a bit off in their 300 Wh/mile estimate:
...
And their calculator says it only uses 280 Wh per mile!

Depending on how, where, and when you drive it these numbers are quite achievable. I've finished my 28mi commute with an average of less than 280Wh/mi on numerous occasions. I've also given short test drives where I floor it and come to a stop again almost immediately. The EPA rated efficiency of the vehicle is around 320Wh/mi which is almost exactly what I'm getting on average. In January. Commuting over a mountain pass. Parking in a garage down a steep California driveway that starts every trip around 3000Wh/mi initially.

Honestly, I'm very, very happy. How many people achieve EPA ratings for their ICE vehicles with their lifetime average usage? I know I haven't. My Boxster S is rated at 19 mpg city but even when trying to drive her gently I can't do better than 15.