0-60 changes according to battery charge level?

[Sero30]

I have a Premium AWD ExtRange Mach e. Before I had the HVB condition, I ran 0-60 at about the 5.1 range. During the code, I was at about 15-18 seconds. After getting the HVB fixed last week, my 0-60 is now 6.1 - 7.8 depending on whos counting. So I took it back in. I was told since the car was only at 40% they needed to charge it to test it. I had told them during the fix that the charger was also malfunctioning and overnight it decided not to charge. So, they tested it at 6.1 on average and gave the car back. I was told by them that they would get back to me, but performance decreases as battery charge decreases. Meaning I would only get the advertised 0-60 at 100% charge. Times would go up as charge diminished. Should charge level have anything to do with performance? I was under the impression it didn't.

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[Maquis]

Yes, it is affected by charge level. I haven’t seen any numbers to know if what you’re seeing is typical.

 

[sotek2345]

I have a Premium AWD ExtRange Mach e. Before I had the HVB condition, I ran 0-60 at about the 5.1 range. During the code, I was at about 15-18 seconds. After getting the HVB fixed last week, my 0-60 is now 6.1 - 7.8 depending on whos counting. So I took it back in. I was told since the car was only at 40% they needed to charge it to test it. I had told them during the fix that the charger was also malfunctioning and overnight it decided not to charge. So, they tested it at 6.1 on average and gave the car back. I was told by them that they would get back to me, but performance decreases as battery charge decreases. Meaning I would only get the advertised 0-60 at 100% charge. Times would go up as charge diminished. Should charge level have anything to do with performance? I was under the impression it didn't.

Yes that is normal. As the battery discharges the pack voltage decreases, which limits the power that can be supplied to the motors. Power (kw) = Volts x Amps. Amps is limited by the hardware due to heat buildup, so decreasing voltage will decrease the max available power.

Any performance testing should be above 90% state of charge.

 

[Pushrods&Capacitors]

Just an fyi from a Dragy user here - I have dozens of runs on our 4X from 30% to 95% SOC and I’ve never seen a 0-60 as slow as 6.1, let alone 7+. Most are in the 4.9-5.0 range but none slower than 5.5s.

 

[Mach1E]

Just an fyi from a Dragy user here - I have dozens of runs on our 4X from 30% to 95% SOC and I’ve never seen a 0-60 as slow as 6.1, let alone 7+. Most are in the 4.9-5.0 range but none slower than 5.5s.

The line “depending on who is counting,” tells me it’s not exactly a scientific test.

OP, charge it up, post a video and the second timer on the video should give us a better idea of your timing.

I saw the video you posted in another thread, but unclear when that was taken, because that was about 5 seconds.

My Premium AWD Extended Range got the fix. I’m at 28,000 miles. My 0-60 was 5.1. Top speed was 113. During the hvb malfunction it dropped to 18seconds, and a long reach for 113. After the fix is a mid 7, and I can get to 110 fairly fast, but that last 3 is a maybe after about 30 seconds of flat highway. But not if there is a slight incline.

 

[Logal727]

If it throws my head back and pins me to the seat I know it’s all still good

 

[ripperAZ]

In my ICE Genesis G90 I only get the full 420 HP with 91 octane gas. No problem with regular gas just you lose a little performance. This is the same kind of thing. although completely different. OK it’s early. I need coffee. 5 second limit still sucks.

Jes sayin

 

[Pushrods&Capacitors]

In my ICE Genesis G90 I only get the full 420 HP with 91 octane gas. No problem with regular gas just you lose a little performance. This is the same kind of thing. although completely different. OK it’s early. I need coffee. 5 second limit still sucks.

Jes sayin

Not to be that guy, but, I’m betting you only get the full 420hp on 93 octane and then a bit less on 91, then more drops at 89 and 87. My 2012 GT/CS was rated at 412hp on 93 but I believe it was 394hp on 87. 18hp loss for what, $5.00 extra a tank?

 

[ripperAZ]

93 octane

Yeah prolly true. 93 octane is rare in AZ hardly ever see it in the summer. Some Valero and hot rod stations sell it for 12 bucks a gallon.
Jes sayin. 411 hp is fine.

 

[ARK]

In my ICE Genesis G90 I only get the full 420 HP with 91 octane gas. No problem with regular gas just you lose a little performance. This is the same kind of thing. although completely different. OK it’s early. I need coffee. 5 second limit still sucks.

Jes sayin

I don’t think the ER AWD variants have the 5 second rule, but it’s hard to tell when power is limited on non-GTs since we don’t have the power meter.

 

[Sero30]

I have also gotten a significant drop in range now. 100% is 254 miles, down from pre repair of 274, and last years 312 range i was getting consistently for the first 3 months.
Temps are above 75. Overnight 65.

 

[ARK]

I have also gotten a significant drop in range now. 100% is 254 miles, down from pre repair of 274, and last years 312 range i was getting consistently for the first 3 months.
Temps are above 75. Overnight 65.

I think that might be a temperature change or perhaps the update reset your GOM.

Because let's say for a moment that the update applied a stealth power limitation that was not there before. That would mean the Mach-E was limiting how much power the motors pulled in a way that did not happen before.

If that is the case, your average range should creep up, not go down, because there would, hypothetically, be a new system nanny preventing you from driving the way you used to.

 

[Shayne]

Just an fyi from a Dragy user here - I have dozens of runs on our 4X from 30% to 95% SOC and I’ve never seen a 0-60 as slow as 6.1, let alone 7+. Most are in the 4.9-5.0 range but none slower than 5.5s.

You have confirmed this on a few that have had HVJB service carried out lately?

 

[Mach1E]

You have confirmed this on a few that have had HVJB service carried out lately?

No need.

If they reduced your horsepower secretly, there would be a class action lawsuit that’s easily winnable.

Big corporations care about 1 thing the most: reducing liability.

Of course this would require someone to Dyno their car as proof.

Seriously though, it’s been 18+ months now and 10s of thousands sold. Does no one live near a Dyno??

 

[sotek2345]

No need.

If they reduced your horsepower secretly, there would be a class action lawsuit that’s easily winnable.

Big corporations care about 1 thing the most: reducing liability.

Of course this would require someone to Dyno their car as proof.

Seriously though, it’s been 18+ months now and 10s of thousands sold. Does no one live near a Dyno??

My understanding is that you need a special Dyno for these AWD EVs to keep the speed matched between the front and rear axles. They needed a new custom setup to get the Dyno results on the Lightning.

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