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I've done a lot of acceleration tests using the PowerTools app and never got anything under 4.1 sec. It's usually very consistent at 4.2 sec when the battery SOC is > 80%
I have recorded two 3.7 second 0-60 runs using PowerTools and a near 100% SOC. However because PowerTools only polls every .25 seconds, those 3.7 runs could be 3.925 (or anywhere in between). So I'd speculate a (my) real number is probably 3.9ish.