# Forums

I charged my X 75D until it showed range = 207mi. I drove for <2 miles and now the range says 195 miles. This is a 2 week old car. Is this expected? Should I take it to a SC?

lilbean | January 9, 2019

We you driving an obese family of six up a hill in the cold against the wind with the heater on full blast with low tires and hundreds of pounds of luggage?

mathwhiz | January 9, 2019

No.

jimglas | January 9, 2019

@lilbean: there were only 5 of them, approximately 1 ton

wang5150 | January 9, 2019

Not sure if the OP is being serious, but they should post the watts per mile (or watts per km) for the 2 mile drive. Things like heaters (steering wheel, seats, air) will eat up a lot of energy when the car is just sitting idle.

On a longer drive, weather conditions like wind, rain, traction on the road, etc. will also impact energy consumption.

Hope this helps the OP.

jcon | January 9, 2019

Also, I would add that based on previous posts, I switched back to a % bar instead of miles estimate and then let it tell me the estimated % after my trip in the navigation - much less stressful than wondering about the mileage calculation.

mathwhiz | January 9, 2019

+1 @jcon

mathwhiz | January 9, 2019

OP might want to learn and become familiar with what variables affect EV efficiency (i.e., speed, wind, temperature, road conditions and incline, HV battery temp, etc.). But suggesting that less than two miles is a reasonable sample to draw any conclusion from -- c'mon now... :~

Yes, I know EV technology is emerging compared to internal combustion engine. (ICE) and we're not nearly as learned of it but, please don't waste the service center's precious time on something like this.

Vawlkus | January 9, 2019

Same here jcon

TDUB | January 10, 2019

You can't judge energy consumption or mileage by short distance driving. Like many pointed out in this forum, in your first couple of minutes of driving, the car consumes a lot to heat or cool the battery. I picked my car in early September 2018, now 4500 miles on it. I have average 282 wh/mile on the record, which means I can drive 265 mile with my 75 kwh, theoretically.
I found that heating cabin consumes more than AC.

gwahidi | January 11, 2019

I took ownership of my 75D MX and am finding myself charging the vehicle every 2 days or so. It’s fairly annoying. I do not have my own plug to charge overnight. However, I noted I get the best Wh/mi when in autopilot. So, I drive it in this mode most of the time. I find myself much more relaxed and enjoy the drive. I suppose, it would be much easier if I had my own charger. Second, driving around 70 mpg on highway seems to be the optimum.

antoniolabriola1026 | January 12, 2019

I have the same concerns regarding the use of the battery. For over 650 miles I have a 380 WH/M which converts to about 1/2 of the reported mileage. I brought the car to the service center, but was told that nothing is wrong with the battery, and that car needs to always be plugged in for a happy Tesla and pre-condition the car for about 20 minutes in cold weather or hot weather. Imagine, for a long drive in the northeast in the middle of the winter, you may need to charge almost every 100 actual miles on the model 75D.
I am not sure this explanation is satisfactory to Tesla owners, it is not to me.
I strongly seek comments to my post. Thnk you...

Aside from this issue, which I deem significant, I LOVE the car.

antoniolabriola1026 | January 12, 2019

I have the same concerns regarding the use of the battery. For over 650 miles I have a 380 WH/M which converts to about 1/2 of the reported mileage. I brought the car to the service center, but was told that nothing is wrong with the battery, and that car needs to always be plugged in for a happy Tesla and pre-condition the car for about 20 minutes in cold weather or hot weather. Imagine, for a long drive in the northeast in the middle of the winter, you may need to charge almost every 100 actual miles on the model 75D.
I am not sure this explanation is satisfactory to Tesla owners, it is not to me.
I strongly seek comments to my post. Thnk you...

Aside from this issue, which I deem significant, I LOVE the car.

burdogg | January 12, 2019

@antoniolabriola1026 - you have not given enough info for anyone on here to comment. What weather temps are you driving in. 380 wh/m does not translate into half. But wh/m does not take into account energy used when in park - example, you are parked in your garage and you preheat your X 20 min before you leave - and you are NOT plugged in. In this case, you are pulling energy from the battery, thus reducing the miles, and that does not show up on your wh/m usage either. Preheating will drop your range if you are not plugged in.

Second - what kind of trips are you taking too. For me, I expect what you are seeing, as I leave my house at 10 degree F weather and drive 4.5 miles to work, to have my car sit in same temps for 5 hours, for me to then get in the car, drive another 4.5 miles, car sit for 45 min, get back in, drive 4.5 miles, car sit for 4 hours, get back in and drive 4.5 miles. All this in temps 38 degrees F and lower. This is killer on range...becuase the minute I get in the car to go, lots of energy goes to warm up the battery...the short drives never gets the battery heated, so each time I get in...more energy goes to heating the battery. I only charge every 3 days or so as well...so yes, it "looks" like I would normally lose half my battery. The reality is...if I were to take a long trip - that evens out a lot more - as the battery warms up, less energy goes to heating it.

Also - how high do you have the heat on at this point? The heater in the car also draws a fair amount from your ability to go further (hence the preheating while NOT plugged in also cuts your miles down). I sat at a bank and had my heat on for 5 minutes and saw 2 miles fall off the range in that short time period.

So maybe some of my info will help you - but to really discuss more with you - we really need to know details. Remember this cold weather really will make a hit to your range - especially short trips.

kwreid | January 13, 2019

I've found that as long as I'm not doing hard accelerations and my cabin heating isn't on, I get better than the rated range. I found that autopilot was pretty "jerky" in acceleration and deceleration and this likely burned some of my range. Without autopilot on I'm driving like a regular car and not needing to hard accelerate or decelerate when I see that traffic is going to open up or slow down by looking ahead and around me.

kwreid | January 13, 2019

I've found that as long as I'm not doing hard accelerations and my cabin heating isn't on, I get better than the rated range. I found that autopilot was pretty "jerky" in acceleration and deceleration and this likely burned some of my range. Without autopilot on I'm driving like a regular car and not needing to hard accelerate or decelerate when I see that traffic is going to open up or slow down by looking ahead and around me.

kwreid | January 13, 2019
antoniolabriola1026 | January 14, 2019

Thanks for the comments. I drive for short trips in the NYC area with heating and front seats on at 72/74 degrees.
Yesterday, I took a long drive to Nassau Coliseum and back for about 66/70 total mileage and got much better efficiency, around 300 wh/m, almost a one to one range comparison.