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I found that even light rain makes a considerable difference...that's a lot of additional mass that needs to be accelerated by the car, in addition to the increased tire drag on wet roads, etc...maybe that was it.
And when I had to replace a pair of tires due to puncture, I found that even two new tires out of the four incurred ~40kWh/mi penalty for the first few hundred miles...
Third time today a supercharger has landed me with "Unable to charge." Working on the 2nd stall tried. Gonna call tesla...
has anyone heard anything directly from Tesla on the status of "normal" mode?
Yes! Elon Musk himself during the P85D presentation said: 'Three settings: Normal, Sport, and Insane'. But then somehow this 'Normal' setting was dropped. I want it back!
Software update to achieve max efficiency (going to full idle on 2nd motor) is not out yet. Range of P85D should then closely match P85+.
Made it to my destination.
120.5 miles, 47.1 kWh, 391 Wh/mi. Drove with traffic, 75-ish. Left with 218 rated miles, arrived with 65.
In summary... definitely not as efficient as my P85, despite the highway MPGe being higher. No way. No how.
The exact same stretch from Burlington to here in worse temperatures (38F compared to almost 50F this time) and probably higher speeds (I set the cruise to 78 usually...) yielded 120.8 miles, 42.8 kWh, 354 Wh/mi. It did start raining near the end of this leg, but didn't seem to affect my energy graph much at all...
The time before that in my P85 in nicer weather (70s) I left here and went straight to South Hill, VA. 229.2 miles, 68.9 kWh, 300 Wh/mi. The total for those legs today: 230.7 miles (I did miss a turn at Burlington and have to turn around...), 90.7 kWh, avg of 393 Wh/mi. And honestly, only the first time I took this trip in the P85 did I hold back. Since then I've just driven like I didn't have a range limit and it has just been efficient.
I kind of miss my P85 now...
- - - Updated - - -
Wonder if this is partially in response to my shaking the tree. I sent an email to ownership and my DS expressing my dissatisfaction with the efficiency I was seeing in comparison to my P85 earlier today.
"Range of P85D should then closely match P85+"... yet they originally said it would be more efficient than single motor... not "match." *sigh*
wk057... matching is certainly significantly better than what you thought you were seeing today (a future of rearranged routes based on suspected decreased range), yes?
I get that they could have handled the presentation of information better. I think you can make a case that while not necessarily technically dishonest, they could have been more honest in presentation. I say not technically dishonest, because my recollection is the presentation October 9th was ambiguous as to whether the 85D, or both the 85D and P85D would have better efficiency... what's more, technically if P85D matches P85+ efficiency, you're probably looking at an improved efficiency from AWD partially offset by the monster performance tweak of a couple hundred plus added HP.
Wonder if this is partially in response to my shaking the tree. I sent an email to ownership and my DS expressing my dissatisfaction with the efficiency I was seeing in comparison to my P85 earlier today.
"Range of P85D should then closely match P85+"... yet they originally said it would be more efficient than single motor... not "match." *sigh*
Your range was reduced to ~2 miles ?! :wink:
Well, this trip has proven to me that the rated miles display is pointless. We need other options for that spot. KWh remaining? % battery? Custom range based on user defined Wh/mi? If it's virtually impossible to get the "rated" range in real world conditions, why bother displaying it? Give me something more useful.
... yet they originally said it would be more efficient than single motor... not "match." *sigh*
Made it to my destination.
I kind of miss my P85 now...
"Range of P85D should then closely match P85+"... yet they originally said it would be more efficient than single motor... not "match." *sigh*
Wow that is a hard pill to swallow, and hard to comprehend how they could think that 2 motors with 2 drivetrains and 2 inverters with 2 extra drive shafts could exceed or even match a single motor system.
i've never read or heard about an idle mode of a back-driven motor shaft that can make up for the extra weight of the system and the angular momentum of the rotating masses, plus there will be a residual magnetism in the rotor that generates an emf when back-driven that will oppose the forward motion like a hysteresis brake. This seems not to be a digital software issue that firmware can solve, but is just basic physics and Maxwell's equations. Or maybe it's in one of those all our patents are that i haven't read yet...