2023 M3P degraded performance after update

[Konicom04]

Drove the Tessy ( wife's daily) for a while yesterday, and couldn't help but notice what appears to be a degradation of "take off" performance from stand still ( or 0-60 )
It feels like the rolling starts / quick lane change acceleration are actually better - but 0-60 feels not as violent as i remember it.

Did anyone else notice ?
Have they changed power / torque balance with recent software update ?

 

[GtiMart]

Was the car at a lower SOC than the last time you tried? Maximum power is affected by SOC. Was the battery cold-ish? Battery temperature can seriously reduce performance.

 

[Konicom04]

Oh - thats a good point.
weather was in low 70's so don't think the battery was cold.
SOC was at 30 % tho - you may be correct on that. I do usually drive Tessy at much higher SOC

 

[GtiMart]

30% SOC is pretty low. You can lookup some dyno charts and you'll see that you are missing enough power that you should feel it.

 

[Konicom04]

30% SOC is pretty low. You can lookup some dyno charts and you'll see that you are missing enough power that you should feel it.

Thanks ! - sounds like this is what i experienced

 

[Konicom04]

still -
the friend's comment - who rode in a tesla for the first time - was " ... i think i left my eyeballs in the trunk ..."

( an ex air force fighter pilot )

 

[White_Walker]

Thanks ! - sounds like this is what i experienced

Battery level for 0-60 is minimal in my handful of tests. I'd imagine the 1/4 mile and trap speeds would be more impacted.

100% SOC - 3.37
37% SOC - 3.51

 

[jjrandorin]

Battery level for 0-60 is minimal in my handful of tests. I'd imagine the 1/4 mile and trap speeds would be more impacted.

100% SOC - 3.37
37% SOC - 3.51

Sure, but the op also said:

weather was in low 70's so don't think the battery was cold.

but just because it was 70s outside it doesnt mean the battery wasnt too cold to deliver whatever peak power it could deliver at that time.

 

[Gauss Guzzler]

Battery level for 0-60 is minimal in my handful of tests. I'd imagine the 1/4 mile and trap speeds would be more impacted.

100% SOC - 3.37
37% SOC - 3.51

I dunno, I'm pretty sure my car is:

100% SOC - 3.37
37% SOC - 35.1

 

[M3_Performante]

probably just due to the fact that it's not a new sensation to you anymore as you get more used to it as opposed to the first few times you experience it....easy fix, drive an ICE car for five minutes

 

[GtiMart]

I can definitely feel a lot less power when I get to 30% and lower SOC driving on the highway. Please see this: Tesla Performance Model 3 Dyno Testing At Various SOC

 

[Konicom04]

I can definitely feel a lot less power when I get to 30% and lower SOC driving on the highway. Please see this: Tesla Performance Model 3 Dyno Testing At Various SOC

Oh wow -
That makes total sense - i just never thought about it.

One would think that EV engineers would implement a power management to balance out inefficiencies at lower SOC, meaning really trimming power at high SOC.

 

[GtiMart]

As your state of charge gets lower, the voltage of the pack is lower. To push the same power you'd need to push more Amps. There's a limit to how many amps can be pushed, either at the motor or the cable size etc. You could put a bigger battery but that brings other problems like weight, size etc... It's just a different animal than an ICE car... you just need to understand how it works.
EDIT: OR, you make a car with a max power that's much lower than the capacity of the system so you can sustain it for longer... We don't want that.

 

[jjrandorin]

EDIT: OR, you make a car with a max power that's much lower than the capacity of the system so you can sustain it for longer... We don't want that.

I certainly dont, lol. I have always thought that this is what many other EV manufacturers are doing though, along with having a BMS that is not as advanced as Teslas (why something like a Kona EV has fairly anemic acceleration, although its a very serviceable EV in a lot of ways).

 

[Riceball777]

30% soc feels quite a bit slower and less powerful compared to 80%+soc. It’s very noticeable.

 

[Gasaraki]

You get 100% of your power from 80% charge and higher. Starting from under 80%, your power (HP) drops till you get to like 20% charge, then levels off. The last time I saw a dyno it was by 70% charge, you lost 10% of your total horsepower, so on and so on.

 

[White_Walker]

Latest 23 M3P doing just fine for me @90%. Uphill at that....hoping for 2.9 with a slight decline.

 

[DrChaos]

Drove the Tessy ( wife's daily) for a while yesterday, and couldn't help but notice what appears to be a degradation of "take off" performance from stand still ( or 0-60 )
It feels like the rolling starts / quick lane change acceleration are actually better - but 0-60 feels not as violent as i remember it.

Did anyone else notice ?
Have they changed power / torque balance with recent software update ?

Besides the state of charge, it's also conceivably possible that the off-the-line accel and torque might be limited by a software update.

This happened with my previous EV, BMW i3. An update nerfed the immediate accleration from zero a bit because there were a number of motor mount failures which were very expensive to BMW warranty claims. Now the 3 has much more power than that.

It might be not quite as fun, but your suspension will last longer this way.