Actual miles are HALF of rated miles!!

Actual miles are HALF of rated miles!!

Am I doing something wrong? I drove 50 actual miles but that ate almost 90 "rated" miles. One time I went to each for an hour and came back to 20 LESS "rated" miles than when I got out of the car. I checked every time that the car actually locked itself and turned the lights off. I did not drive it rough or fast.

mlaiken | December 30, 2012

Where are you located? Just asking if it is a very cold locale? I know cold has a fairly decent effect on the battery? If not a cold location then I would contact Tesla as maybe something is wrong.

lightly | December 30, 2012

Also heavily dependent on driving habits! Did you do any regen?

sergiyz | December 30, 2012

Look at your average Wh/mi, that will give you a good answer.
The idle consumption is better with 4.1 firmware.
In the 4.1 energy app make sure to select average over the last 30 miles.

kidalex | December 30, 2012

I have 4.1
I'm in CA but the weather here has been about 40F at night and 50F during the day, so not that bad.
I did regen a lot. Only was using breaks when I had to.
So, what gives????

riceuguy | December 31, 2012

Probably time to call the service center...let us know what they say!

Jolinar | December 31, 2012

if you drove 50 miles uphill it could easilly eat 90 rated miles. And downhill it won't use any or just a few.

Runar | December 31, 2012

Regen only recover about 40%(?) of the movement energy, so this will be a major energy-loss area, even though it is better than braking. You should rather adapt your driving so that the car dont have to regen or break. Steady even speed is what you need to aim for.

olanmills | December 31, 2012

My range hasn't been quite that bad, but I did eat up more battery than I expected on the first day of driving. I did over 120 miles. In the Puget Sound area (Seattle) we don't really have flat roads, and I also did a bunch of highway and 'stop and go for a little while' driving, which means I spent a lot of time accelerating and not much time cruising, except when I was cruising at 65-70 on the not-flat highways. It's also somewhat cold right now.

jjaeger | December 31, 2012

And I find that the first miles off a charge tick off a bit quicker until regen is allowed to kick in. That and spirited driving - and for me - mainly at freeway speeds, has my week 1 results on the high end of the scale. But am getting the sense for how to moderate that down, just not ready to do so quite yet :-)

Captain_Zap | December 31, 2012

I live in the Seattle area as well, and my average energy consumption over 2100 miles has been 383 W-h/mi. This is with heat on, typically in the dark, raining, and cold (30-45F), sound system cranked, mix of hwy and city driving, and I live on a steep hill. Assuming 85% of the 85 kWh pack is available in a standard charge, this gives a typical range of 72.25/0.383 = 188 miles on a standard charge in our crappy conditions, or about 78% of the 240 rated miles.

Crow | December 31, 2012

I am averaging around 360 W-h/mile in the Colorado cold with some pretty aggressive driving. Temps are around 20F to 35F. But I have some good freeway driving in there. Short trips in the cold kills your energy consumption on a per mile basis because the battery puts out a lot of energy to warm up the battery.

RZitrin1 | December 31, 2012

I've driven mostly in San Fran, and my average wh/mi. is over 400 in town, sometimes even higher.

On the road, though, I'm down between 280 and 340 depending on driving. I just figure that SF's hills (and my cab-driver style) are just eating up energy. That's the way it is. Went to Berkeley and back Friday and was down to 300 again.

DouglasR | December 31, 2012

Try this: after the car is warmed up, reset one of your trip odometers to 0, and take a nice long drive on the flattest road you can find. Drive at least 100 miles. Keep your speed as steady as you can, averaging around 50, and try not to brake. Keep your energy app on, and watch your energy consumption. Try to get your projected miles down to where they equal your rated miles at 5, 15, and 30 mile averages.

If your consumption is still over 400 Whr/mi, you should take the car in to have it checked. If you can get your consumption down to 325 or so, you are probably within the normal range, and you have just learned how to drive this car to get better range.

I read reports of people getting under 300 Whr/mi, waking up to a car that has charged to 240 rated range by morning, and charging at the full 31 miles per hour of charge, and I am envious. My experience is more like that of Captain_Zap, olanmills, and some of the other soaked northwesterners. I wish it was better, but then in the summer we won't have to waste a lot of watts on air conditioning.

BTW, @Captain_Zap, how did you find your consumption for 2100 miles? Did you simply not reset one trip odometer, or is there a place where you can find your energy usage over the life of the car?

vouteb | December 31, 2012

drive 100 miles to test???

DouglasR | December 31, 2012


Damn right! This car is so much fun to drive, I'd go 100 miles for a pizza.

murraypetera | December 31, 2012

I posted this to get some avg numbers for folks to enter this data but currently there not many entries.

I only calculate the avg at present but will add sub calcs when there is data to justify the work.

GeekGirls | December 31, 2012

I've only had the car for a day and haven't done any real distance driving. So far it's only the trip back from the Freemont factory to home, a few errands, and a little light sightseeing this afternoon. I seem to be averaging around 350Wh/mi with a mix of aggressive driving and focusing on efficiency. Not too bad. It means with a standard charge I'll get 200mi without really worrying about it, and a full charge would take me over 240mi. That's 80% of "ideal" and around 90% of the rated range.

one2mark | December 31, 2012

I don't know what my average is and honestly I am not tracking it. I love driving the car. I can say that on my first long drive from my house in Bedford, PA to my house in Charlottesville, VA 186 miles. I was left with 50 miles of charge remaining. I ran the heat and the first 12 miles were on snow covered roads. It was about 29F when I left Bedford and 37F when I got to Charlottesville. I followed the speed limit and didn't go more than 5mph over. Lots of rural highway 55-65 mph. I used cruise control which had a very tight range. Cruise control in this car is better than most humans.

My car started to get the software update 15min after I got to my house in VA. Hopefully it will improve even more.

It would be nice if you could get the statistical data from the car sent in an email or an ability to download the diagnostic information to your own computer.

rwang | December 31, 2012

I'm averaging 400 wh/mile. That's going 75 to 85 mph on the freeways, hard acceleration from time to time, and a mix of highway and city driving. p85 performance.

timdorr | December 31, 2012

@rwang, that seems about right. You're driving it pretty hard and 75-85 is both speeding and taking it out of the ideal speed.

The "perfect" speed for the car is ~21 MPH, as you can see here:

At an average of 80 MPH, you should expect only 200 miles of range. At a safer 55 MPH, you'll get ~310. That's also with climate control off and on a perfectly flat road.

Most people should be expecting 200-250 as their range. Leave it on Rated, because Ideal is...well...ideal. Overly ideal, really. Rated comes closer to reality.

The exception is for road trips, where you can get closer to ideal conditions more easily. Use cruise control a lot and I find it both smooths out the power graph and lowers it a lot. CC drives better than I do, so it's a must if you're going on a distance trip.

docdac | January 1, 2013

Here is my cold weather test drive results from today, 1/1/13:
Outside temp 7 - 11 deg F. in SE Minnesota.
Accessories in use were: XM radio (moderately loud), driver seat heater at #1 level, and Climate Control set to 67 deg F, auto fan, but with 'Range Mode = On' (which limits how hard the heater/fan tries to work - see notes on software v 4.1). Overall, it was a very chilly cabin.

Tires are Dunlop snow tires on 19" aftermarket wheels, inflated to 45psi.

Drove 86.2 miles (43.1 out, 43.1 back), at steady 65 mph (cruise control), on gently rolling hills, with no net elevation gain.
'Rated Range' at start 250 miles (with warm recently charged battery).
'Rated Range' at end 129 miles. When I shut down, I got a messages saying the battery is cold, and recommended charging.
So: used 121 'Rated Miles' to go 86.2 miles (achieved 71% of rating).
The 30 mile average projected range remaining at end was 102 miles projected. So, real miles plus realistic projected range was 188.2 miles, compared to 250 'Rated', or 75% of rated miles.
Average energy use was 411 Wh/mi, with total energy use of 35.4 kWh.

I was a bit disappointed, but then again it was 7 deg out! I would have thought that the batteries would stay plenty warm, as I used them to cruise at 65mph, but apparently they got colder as the trip went on.
Next, I will try the same trip at 55 mph cruise control (tomorrow - should be about the same temp).

rwang | January 1, 2013

@timdorr - average speed on 280 in Northern California is about 75 to 78 mph =)

Has anyone noticed an interesting whrrr in the speakers when you go past 80 whr in the acceleration.

Neech | January 1, 2013

I keep reading about how cold weather affects the battery charge and docdac noted the battery needed charging because it was cold after his 86 mile drive. So, I'm wondering if anyone knows if a long, very cold winter will have any long-term damaging effects on the battery? | January 1, 2013

Have software version 4.1 - High temp today was 25-30 F. At each stop the screen suggested I plug in to warm the battery. Of course the charging cable was at home in my garage.

portia | January 1, 2013

also driving short hops are less efficient, lots of factors. the rated miles are based on an ideal condition of 55mph. I get rated miles only on longer trips and not driving too fast!

KMN | January 1, 2013

Agree with rwang, when cruising 65 get passed by 90% of the cars up here in the NorthBay, shuddering at the idea of taking over to I-5 and driving to Harris supercharger. Maybe I'll leave at 2am....

William9 | January 2, 2013

Just did the trip, no problem. Key was using CC at 5mph under posted limits. Started with 269 rated, and ended with 45 rated. Trip was 209 miles. 65 mph on I-5 was no problem once you get over being passed by most everyone. Trucks help as the posted limit for them is 55-60.

nickjhowe | January 5, 2013

Got a pleasant surprise today. Did my first cruise along the freeway. Cruise control set to 80mph (indicated). This was with A/C on, and with two passengers, approx 75deg outside, and mostly flat (except for overpasses) - I'm in South Florida.

The graph in the efficiency post shows a consumption of 400 Wh/m at 80; the car was showing between 360 and 370. This would put the range at near 225 miles at 80mph.

I was expecting over 400. Admittedly the A/C wasn't working too hard, but 370 is significantly better than I had hoped.

Captain_Zap | January 5, 2013

@DouglasR - I have left one of the trip meters running since the car was delivered, so I have a running "lifetime" Wh/mi average of 383 over 2100 miles.

robkal007 | January 5, 2013

Agree with observation that 65 mph is much more efficient than 85 and correlation with Rated Range is very close in our experience (2500 miles so far). But getting 350 Wh/mi is not nearly as much fun as burning 425 Wh/mi!! Love driving for the fun of it, but will settle down and try for an efficiency run soon.

jat | January 7, 2013

@rwang - no, I haven't heard any whir above 80kW.

one2mark | January 9, 2013


I am interested in getting 19" wheels and all season radials to run in the winter. Can you list the specifics of the wheels your are using and also where you got them? What about the TPMS? From TSLA or did you aftermarket? What about calibration for the car's monitoring system? Thanks


John-V707 | January 9, 2013

I have a total lifetime also, but I know it's going to get reset someday. I have been thinking that on the trip details page, with the A and B trip odometers, it would be nice to have a third line that is titled "Odo" that is the car lifetime odometer, and the car lifetime energy use and average use. There is room on the instrument cluster mini-display, but it's really only needed on the main display where there is plenty of room. Maybe they will put it on there someday.

DouglasR | January 10, 2013

@John-SigPerf-V707, good suggestion. Think about adding it to the Prioritized Software Enhancement thread.

Hills | January 10, 2013

Multiply rated miles by 0.72 is my realized miles.

Life time average 370 Wh/mile. Car is 5 weeks old (was out of town for 10 days), 810 miles driven since delivery. 1/3 local driving, 2/3 highway, Bay Area.

Model S: regular 85KW, 19" wheels (for safety and mileage), almost all options except premium sound & rear seats.

Terrain is hilly near my house. I seem to average about 420 Wh/mile in neighborhood and town driving. Temperate has averaged about 50 the past month. Climate set on low fan, 72 degree, 70% screen brightness, seat heat #1. Car always charged to 240 rated miles late at night, but lower by 7 am, ranging from 230-238, does not seem to matter if it is plugged in or not.

Seem to average about 350 Wh/mile in Highway driving, a mixture of 70 miles/hour and congested commute traffic when the average speed can slow down to 15 m/hr, stop and go. When going 70 m/hr, seems about 370 Wh/hr, which is worse than the Tesla graph, but Tesla graph is ideal. In general, car is not driven hard, except when "showing" family and friends :)

Other: I believe the Energy screen statistics of Wh/mile is overstated because (1) the car does use energy when parked if screen is on,(2)Charging is not 100% efficient. I estimate 90% charge efficiency, but I can't back up my claim scientifically yet. (3) The car loses miles just sitting there, even when the car is sleeping, even with 4.1.

Brian H | January 10, 2013

The app would allow you to time charging to complete at 7 a.m., so you'd get full range.

Hills | January 11, 2013

Is "timed charge" or "delayed charge" now available?

murraypetera | January 11, 2013

The form I put up has 5 entries and 6.6k miles with an average of 335.4 w/mile

Raw data

Entry from form:

docdac | January 14, 2013

@one2mark: I got 235/50R19 Dunlop SP Winter Sport 3D snow tires on 19x8.5 Advanti Racing B1 Lupo Silver Painted wheels (very good looking wheels). I bought these from
$920 for tires (expecting a $40 rebate).
$796 for wheels. includes wheel specific lug nuts.
126.14 shipping, and received them in 3 day.
Total $1842.14.
These tires where mounted and balanced at TireRack, and ready to install.
I did not buy TPMSs, and consequently the TPMS warning light is on continuously (until I remove the snow tires in the spring). The only effect that this has, that I have found, is that I cannot turn off the Traction Control when the TPMS light is on - but I wouldn't want to do that anyway!
In the spring, I will remount my original 21" Tesla wheels/tires with original TPMS, and I expect the car will recognize them and all will be good. This is what happens with my Hondas and Chrysler when I do the same thing.

STEVEZ | January 14, 2013

Just added my data to the spreadsheet: S#187, Sig Standard 19" all-season, 3000 miles at an average of 339 Whr/mi.

h2onu | January 15, 2013

Got my 85kW just before Christmas and did short trips around Santa Cruz the first couple of weeks while off for the holidays. Started doing my 85 mi r/t to Menlo Park last week and have noticed performance noticeably below rated mileage. Going over Santa Cruz Mtns certainly has an impact. 41 mile trip used 51 miles of range, doing 50-55 mph over the hill and 65 mph on cruise control once in Silicon Valley. At 70 mph on the flats, the 41 miles used up 62 miles.

jat | January 15, 2013

I haven't tried to drive conservatively at all, but I average around 350 Wh/mi over a commute evenly split over interstate and surface roads. In stretches where I tried to be careful, it was pretty easy to get around 300 Wh/mi.

one2mark | January 15, 2013


Thanks for the info on your wheels. I appreciate hearing of your experience.


Tesla-David | January 16, 2013

My experience of driving my MS over past two weeks since delivery in South Edmonds, WA: I have been closely monitoring my energy consumption and trying to beat the 300 Wh/mi rating, where my routine work communtes ~ 35 miles round trip. My experience has shown I can routinely average down under 300 Wh/mi, generally in the 250 to 280 Wh/mi range with speed ranging from 35 mph to 54 mph on Hwy 99. It requires a very light touch on the acceleration and generous use of REGEN on downhills.

djp | January 16, 2013

Tesla-David - thanks very useful. I have been wondering how the MS would stack up against my 3354 lb LEAF in power use. I have a very simular commute, and average 200Wh/mile. Works out about 16.77lb/Wh. With MS weight of 4647.3 lb the equivelant would be 277Wh/mi. Right at what you are getting. As you say, this is with very conservative driving. Can't wait for the MS.

jat | January 16, 2013

@djp - driving similarly in the LEAF and Model S (though more acceleration in the Model S, I was still using the acceleration the LEAF had) I was getting ~315 Wh/mi with the LEAF and ~350 Wh/mi with the Model S. I would suspect that ratio will hold roughly true for other driving styles and mix of highway/surface roads, so you can get a good estimate by taking your energy use with the LEAF and divide by .9.