hmmm - my lovely Taycan is limited to 220 miles range - [Edit] I think it's the tires…

[f1eng]

Apparently not. See above. Your argument should be that OPD is only slightly more efficient. Not that it is less efficient.

Certainly if the cars they tested were using a combination of recuperation and friction braking when using the brake pedal (and it seems they were) then this may well be true.
Otherwise we would need to repeal the laws of physics...

I have driven 2 vehicles with one pedal driving, a 45 minute demo of a Jaguar i-Pace and my Husqvarna lawnmower.
I didn't like it on the Jaguar but have got used to it on my mower over the years.

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[feye]

The tests with various drivers indicate a slightly improved driving efficiency.

I read about this car, but that was years ago. So what did they compare it to?

It is simply to hard in my MS90D with the OPD to find and hold the sweet spot for longer periods of time to get coasting. And the consumption shows it. In my Taycan I just let go of the pedals. Not to mention, that ICE drivers don't need to learn anything new!

They said, blended breaking is hard. Luckily Porsche nailed it. I just hope they keep this for all their future EVs!

 

[whitex]

Apparently not. See above. Your argument should be that OPD is only slightly more efficient. Not that it is less efficient.

OPD is at best as efficient as blended braking, but only if you can precisely control the pedal such that you achieve coasting to slow down using drag, rather than trigger regen (and you have to do it perfectly every time). OPD is never more efficient. It may be more convenient to some people, avoid having to move the foot between pedals, but it also can be inconsistent (cold,hot or full battery causes OPD to behave differently) and sometimes dangerous (when taking a corner in slipper conditions, letting off of the accelerator can trigger regen which in turn can cause a loss of traction and spinning out - I have experienced that in Teslas personally, more pronounced in the rear-wheel-drive versions). I've been driving Tesla OPD for over 8 years now, but looking forward to up to 265KW blended braking vs. up to 60KW OPD.

 

[f1eng]

OPD is at best as efficient as blended braking, but only if you can precisely control the pedal such that you achieve coasting to slow down using drag, rather than trigger regen (and you have to do it perfectly every time). OPD is never more efficient. It may be more convenient to some people, avoid having to move the foot between pedals, but it also can be inconsistent (cold,hot or full battery causes OPD to behave differently) and sometimes dangerous (when taking a corner in slipper conditions, letting off of the accelerator can trigger regen which in turn can cause a loss of traction and spinning out - I have experienced that in Teslas personally, more pronounced in the rear-wheel-drive versions). I've been driving Tesla OPD for over 8 years now, but looking forward to up to 265KW blended braking vs. up to 60KW OPD.

I am intrigued by how the feel will vary depending on battery charge level. The demo car I drove started off with 100% charge so the experience won't be typical, I imagine.

Given the charge curve shown in Jalopink's article it would seem that all 265kW is unlikely to be available above a certain charge level, unless the algorithm allows a short term amount of regen too-fast for battery life if used in a continuous charge.

The development driver I know told me a big part of the development is getting the regeneration level and friction brake proportion seamless at all grip and battery charge levels.

It was a key part in the development of the 919 Le Mans car.

 

[Jhenson29]

Back to you on that.

Sorry, I’m working this weekend (new startup). But I think this has been sufficiency covered by others at this point, which I appreciate. I’ll start another thread on this to go into more detail when I have time.

 

[feye]

The development driver I know told me a big part of the development is getting the regeneration level and friction brake proportion seamless at all grip and battery charge levels.

It was a key part in the development of the 919 Le Mans car.

At a construction site, I was a bit fast over a tiny hill, where the top part of the road was covered with a 1m wide metal sheet.

Just before I reached the top, I pressed the break a little bit. I got the recup as usual, but as the car lost some grip, it instantly switched off recup. When the front wheels came off the metal sheet, the friction break was hard at work...

 

[TAYC4S]

Has anyone who has had the last software updates experienced any range improvement on MY20/21 cars? If so by how much approximately?

 

[Needsdecaf]

Oh, but they do. 8+ years of driving Tesla's, including ones which did not have cabin overheat or Sentry mode (early cars), they all have vampire drain. Tesla's design methodology is to have everything controlled via one main computer, which needs to be on for the car to stay alive (if you pull out the main MCU for example, battery cooling/warming will not kick on at all). The later cars (post march 2018) moved to a new, more power hungry MCU too, and Tesla didn't bother implementing sleep mode either, plus their software had moved to higher levels of abstraction which while speeding up development, do use more power (and memory, and CPU, etc). As long as Elon's hype works and people are buying them, there is no reason for Tesla to improve this (or other things). Perhaps if EPA added an overnight parking to their range test - Elon is sensitive to the range number.

My car just sat in my garage for 23 hours and 55 minutes without losing a single battery percentage. Not plugged in.

 

[Robert Borucki]

Team,

I’ve been driving a Taycan since July 2020 - I’ve made multiple trips in it and often drive long distances - recently my Taycan has stubbornly reported 220 miles range as it’s full charge limit - much lower than I’ve experience in the past - actual driving and battery % confirm that limit - and I’m well aware of the range estimates inaccuracies in it’s distance estiamtes due to recent driving skewing the numbers - consumption has been moderate to ideal and I’ve driven more than 220 miles in the past…

I’m wondering if anyone else has recently noticed their maximum range being limited and/or perhaps this is a change with recent software…

my Taycan is sitting in my garage right now @ 85% SOC and estimated range of 185 miles - that equates to 217.64 miles 100% range - I’m wondering if I should take it to my dealership and have them check the battery…

10/01/2021 Edit: see post #75 - I think it's the tires based on charging/consumption calculations

I think there is a tradeoff for sports car and range.... The bigger motors just consume more electricty and they can only put so many batteries in it. When I first got it, at 100% charge it said I had 256 mile range. I have never been able to duplicate that since I began driving it and I refuse to put it in economy setting for a few times.

 

[sotiris]

Guys, OP’s problem is NOT due to temperatures.
Why?
I started encountering the same exact problems with, my estimates going from 450+ km on 100% charge to, at most, 360-380 km on 100% charge.

My own experience:
Bought the car, 1 year and 1 month ago (start of September 2020), up until mid to late August I had stable 350km(at worst/in sporty conditions) to 470+km(at best / city conditions) ranges at full capacity.
I repeat this data was from a whole year of driving, BOTH during cold and HOT temperatures.

Suddenly, in mid to late August I noticed a decrease of my EST range at 100% capacity. It was approximately at 8000+km of my mileage.

The only 2 things I suspect for now are:
1)Malfunctioning software
2)Tires

I can’t cover the 1) point, due to my limited knowledge on software.
But I can tell you that the only thing, that changed during this year in terms of MY car, are the tires.
After analysing every little detail that I could recall, pre and post EST range changes in August, I remembered that after 2-3 Launch controls in early August + 2-3 “donuts” I made with my Taycan, the tires got very “dried up”.

English is my 3rd language, sorry for any grammar or other mistakes, I hope you understood what I tried to convey.

I still haven’t changed my tires, but I suspect that they are the reason of these range changes.
Maybe somebody more knowledgable could confirm or deny this. Could weathered tires make such a drastic change to my EST range?

 

[XLR82XS]

My car just sat in my garage for 23 hours and 55 minutes without losing a single battery percentage. Not plugged in.

My 2021 RWD has been unplugged for 8 weeks and has lost only 1%. (It's at the dealer for major service)

 

[Kingske]

Guys, OP’s problem is NOT due to temperatures.
Why?
I started encountering the same exact problems with, my estimates going from 450+ km on 100% charge to, at most, 360-380 km on 100% charge.

My own experience:
Bought the car, 1 year and 1 month ago (start of September 2020), up until mid to late August I had stable 350km(at worst/in sporty conditions) to 470+km(at best / city conditions) ranges at full capacity.
I repeat this data was from a whole year of driving, BOTH during cold and HOT temperatures.

Suddenly, in mid to late August I noticed a decrease of my EST range at 100% capacity. It was approximately at 8000+km of my mileage.

The only 2 things I suspect for now are:
1)Malfunctioning software
2)Tires

I can’t cover the 1) point, due to my limited knowledge on software.
But I can tell you that the only thing, that changed during this year in terms of MY car, are the tires.
After analysing every little detail that I could recall, pre and post EST range changes in August, I remembered that after 2-3 Launch controls in early August + 2-3 “donuts” I made with my Taycan, the tires got very “dried up”.

English is my 3rd language, sorry for any grammar or other mistakes, I hope you understood what I tried to convey.

I still haven’t changed my tires, but I suspect that they are the reason of these range changes.
Maybe somebody more knowledgable could confirm or deny this. Could weathered tires make such a drastic change to my EST range?

Do you otherwise feel any difference in the the adhesion of the tires to the road post- vs. pre-launches/donuts? Do your tires feel more sticky now?

 

[sotiris]

Do you otherwise feel any difference in the the adhesion of the tires to the road post- vs. pre-launches/donuts? Do your tires feel more sticky now?

I live in Greece, here the road is very slippery, in comparison to other countries that I have been to.
Whenever our tires here get weathered, old, or dry like after drifting, the road is always more slippery, the adhesion gets worse.

 

[Kingske]

I live in Greece, here the road is very slippery, in comparison to other countries that I have been to.
Whenever our tires here get weathered, old, or dry like after drifting, the road is always more slippery, the adhesion gets worse.

Then I would guess the weathered tires do not have a negative effect on consumption/range?

 

[sotiris]

Then I would guess the weathered tires do not have a negative effect on consumption/range?

I always thought that the less adhesion there is, the more fuel/energy the car will spend.
It seems, I was wrong. Tomorrow I will post my tires and maybe you can tell me more precisely if that may be or may be not the issue.

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