You can install our site as a web app on your iOS device by utilizing the Add to Home Screen feature in Safari. Please see this thread for more details on this.
Note: This feature may not be available in some browsers.
Tires are the hidden cost of quick EVs. I figured it up earlier I was spending more on tires than I was electron juice per mile.2020 Performance Model. 265 Wh/mi at 9400 miles. Just got new tires and seems to be improving. I’m driving easier now since I don’t want to change tires every 10,000 miles.
This is very confusing for me. I have a 2022 3 LR that is averaging 249 Wh/mi (154 Wh/km). Compared to all y'all I'm doing great (even limiting to other model 3s and Ys)! Thing is, the spec that Tesla claims in advertising, and EPA estimate, is 220 Wh/mi; a model 3 LR should get about 350 miles on a full charge. There are a lot of people on various forums saying they get that number, or close to it, some even better.
How does your average Wh/mi compare to the advertised spec when you bought it?
I live in southern Texas, so there is no cold weather drag on the efficiency. Anyway, I've been seeing the worst numbers over the past 2 months (June & July). I've Internet-researched the hell out of this, and found no factual information to support a claim that hot weather can decrease efficiency - only that hot weather will increase degradation of a battery over it's lifetime (in other words, decrease it's longevity). A Tesla support team manager told me it's the HVAC system keeping the cabin and battery pack cool. But I have found no statements from electrical engineers in forums or actual test data to support that claim. In fact, I did read engineers claiming the HVAC system is much more efficient in electric vehicles. I also found a statement from a Tesla spokesperson from 2019 who said the HVAC would decrease efficiency by 1% at worst.
I bought this car because it's supposed to be capable of getting 350 miles on a charge. I get that the EPA test conditions are not very realistic for most drivers, but for about 5 weeks now I stay under 60 mostly, always under 65. I am rarely in stop-n-go traffic, about 40% of drive is in town (traffic lights), and again - southern Texas - so no topography. Yet, I cannot get an average Wh/mi for just one charge cycle below 260.
So, what's the deal? Is something wrong with my car? Tesla support says my battery is healthy. Maybe it's not the battery? Could it be something else? Advice? Educate me, please?
@geordi - aerodynamic drag is a function of velocity squared. So you are correct, in should have typed bny values as (100/80)**2 or (100/80)^2 depending upon which symbology you prefer.You have a math error there - squaring something multiplies it by itself, not by two. For your math there, that would result in 1.25 times 1.25, for 1.56.
So going from 8mph to 64mph, the wind resistance doubles. Or from 9 to 81. Or from 10 to 100.... But while it is certainly more, it isn't 50% greater from 81 to 100.
That's why the wh/mi didn't increase by the same proportions. Obviously more power is needed to counter faster travel, but no, that platitude of "speed kills" doesn't really apply here. I had a 4x6 V-nose enclosed trailer (about 6 feet tall) behind this same car before this trip, and in Florida (very hot and very flat) at 65mph.... I was pulling 600 wh/mi. That's ENTIRELY about the wind resistance. The only thing I haven't confirmed for myself yet is whether these boxes on the back are costing me increased power used, or if it is simply external conditions and higher speeds.
As a function of charging times and arrival battery, the higher speeds seem to only reduce the arrival battery by about 3% from originally-predicted numbers, and add about 5 minutes to charging times. For a day of 800 miles from Wyoming to California.... Spending considerably less time out on the road but at higher speeds is a worthy trade. Is it more efficient? No, of course not. But time is irreplaceable, everything else is.