The DOJ Tesla probe has expanded to include EV driving ranges

[sleepydoc]

Just as another data point, here's a thread of someone deliberately testing the battery capacity.

The poster got 315 out of a rated 317 miles or a difference of 0.6%. (If he goes by the app on his phone he actually got an extra mile)

My Experience Taking my Model Y down to 0%

My 2023 model Y LR 19" stock wheels from Fremont has 17k miles on it, the weather was decent (62F and sunny) so I ran my battery down to 0% (0 miles). I mainly did this to lessen my fears of running out of battery on a road trip. I started with a full battery (100% charged from home), usually...

teslamotorsclub.com

I started with a full battery (100% charged from home), usually when I charge to 100% for a long trip the last 8% usually takes about 35 minutes, this time it took 111 minutes. I am guessing the battery needed a lot of balancing since it has been months since I've charged to 100%.

• 317 rated miles at 100% (the number at the top of the screen near the battery icon, I think Tesla calls it "Total estimated driving distance (or energy) available")
• 315 actual miles driven to 0% from Tesla "since last charge" trip meter
• 318 miles driven shown by my USAA insurance app
• 6 hours 56 minutes of driving over a couple days, highway and county roads mostly in the Denver area at around 60F (USAA app)
• 71kWh consumption of the battery (from Tesla trip meter)
• 224wH/mile averaged. 71kWh divided by 224wH/mile = 317 miles which is magically what Tesla estimated before I started driving.
• When I got to 0% I didn't notice any power loss, however I could see 4 dots on the right side of the Power Meter. 5% is when the dots started to appear.
• I received plenty of warnings that I was getting low, the last few miles I circled my local supercharger station.
• When I tried to supercharge at 0 miles I got an error message saying something like "charging stopped". I freaked out a bit and I started to think this test has ruined my battery!
• I tried another stall and it started charging at 165kW right away and within 45 seconds it was already at 250kW. From 4% all the way to 11% it stayed at 250kW which seemed really good considering I did not precondition the battery at all and it was 62F.
• The charging session took 1:22 from 0% to 100%. (Tesla estimated 55 minutes)
• +80kWh total for the supercharger session receipt which I think included some HVAC and watching Youtube while waiting.
• +76kWh actually went just to the battery (number shown below "Charging Complete" message at top of screen).
• After the supercharger session the new rated miles at the top of the screen dropped slightly to 316.
• As for degradation I am not sure how to calculated it. If it was rated for 330 new and now displaying 316, I guess that is -4.2%. But I used -71kWh draining it to 0%, but it received +76kWh to fill it back up so I not sure how to calculate that.
• After doing this test I do feel more confident about not running out of battery

 

[Macb00kemdanno]

Tesla Model Y Performance EPA Range Decreased To 279 Miles

The Tesla Model Y Performance version has less EPA range than initially anticipated—279 miles, compared to 285 miles expected previously.

insideevs.com