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1. I've found that the more you reset the counters in a car (any car), the less accurate they are.
2. My guess is that you didn't set the tire pressure to compensate for the low temperatures.
3. 34 F, plus 71 mph, plus low tire pressures is going to take off quite a bit of range. In a gas car you lose about one mpg for ever mph you go over 60 because the power is going mostly to push air out of the way.
In a gas car you lose about one mpg for ever mph you go over 60 because the power is going mostly to push air out of the way.
Out of interest, I tried the estimator calculator on the Tesla Motors website (Your Questions Answered | Tesla Motors).
Highway, 55mph @ 70F in a Model S standard, yields 306 miles 'ideal'.
Increasing speed to 70mph drops estimate to 240 miles 'ideal'.
Dropping temperate to 32F and turning on heater, still at 70mph, gives 204 miles 'ideal'.
So, that is about a 1/3rd penalty. Of the 100 miles 'lost', it is about 60/40 to speed/cold.
2/3rds of 181 is about 120, and you did about 101.5 with 28 left, so that sounds about right.
Regards, Mark.
Thanks for the calculator link. I had forgot about that. I will add that I ended up turning off the heater for most of the trip back home to save power. I was kind of worried about making it home after I left the supercharger station and saw that my energy usage was much higher than I was expecting so I thought it would be best to play it safe with no heat.
Also, like I mentioned above, I don't think the range numbers sound about right. I only would have been able to get about 177-ish miles out of a full range charge (267 mile charge). That is about 66% of ideal rated range. That is a huge difference from the numbers the calculator gives.
So I just made it home. I left the supercharger station with 181 miles on my range and I got home with 28 miles of rated range after driving 101.5 miles. Luckily I charged it a little longer to be safe or else I would be on the side of the road waiting for a tow truck right now. I haven't had this problem in the short time I've had the car. I'll be calling the service center tomorrow to find out what happened. The temp outside was about 34 degrees. I know cold weather hurts battery performance, but I didn't think it was this extreme.
It's the cold that makes the difference. In the summer I made that trip using 120 rated miles.
If I'm understanding the OP's question, I don't think anyone has tried to answer it. It seems like he is saying that the kW meter on the *speedometer* is not matching with the trip computer. Whatever extra power is required due to cold, tires, heater, etc., should certainly be reflected in the kW meter on the speedometer, so the kW there should match the trip computer?
I suspect this generalization isn't really... well "true".
In my experience, the heater sucks - the battery. I guess, dress warm, wear gloves, bring a blanket. We do.
We are so used to having astounding amounts of waste heat that we pump into the car at will and never have to think about, that when you have to actually MAKE heat, no one understands. It's the heater, folks. It drops your range by the ton. Sure, the range calculators help, but after making it through last winter (16 months old now), even in "mild" California weather, I plan to use an extra 50% of power (350 wh/mi up to 500 with heat on) when driving in the cold.
Also, like I mentioned above, I don't think the range numbers sound about right. I only would have been able to get about 177-ish miles out of a full range charge (267 mile charge). That is about 66% of ideal rated range. That is a huge difference from the numbers the calculator gives.
Also, like I mentioned above, I don't think the range numbers sound about right. I only would have been able to get about 177-ish miles out of a full range charge (267 mile charge). That is about 66% of ideal rated range. That is a huge difference from the numbers the calculator gives.
In the car now and been cruising at 71 mph. My speedometer energy reading is about 350ish. My trip meter is showing over 420. The hat gives? Anyone have any ideas? I've reset it multiple times too.