Uncle Paul
Well-Known Member
That is why I suggest you measure on a longer trip. Sitting in traffic with AC or heat on can really skew your calculations.
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Model Y excessive battery drain
- Thread starter MaJeK8ball
- Start date
Uncle Paul,
I would be ecstatic if I were averaging 300 Wh/mi. (My avg is 379 according to Tesla). I can't enjoy the ride when I'm charging up after only 130 actual miles when I should be getting at least 225 at a minimum.
I don't lose much mileage when the car sits in the garage overnight, maybe 2 miles, usually just 1 mile ticks off. Battery gauge drops like a rock once I start driving. It doesn't matter if it's a short trip or longer trip. Averages about the same of me getting about 52% of the battery's range, which, IMO, is unacceptable.
Your Wh/mi of 448 is insanely high. If your driving style isn't crazy, I do wonder/worry if something in your car is not right. Maybe something is on that is consuming a lot of energy? Maybe something is faulty and abnormally using higher than normal energy? Maybe regen braking is faulty and it isn't regenning for you?
I dunno, but it seems like you're onto something. Overall, the Wh/mi on that screenshot is def above avg.
I don't really like how the vehicle drives when on standard regen, but will do it if it helps with the range. I just did a 13 mile trip w/ regen on standard and no change to the efficiency.
Battery consumption is still too excessive even for driving with regen on low. I don't think I should be losing 48% of the battery's range b/c the regen is set on low.
Do you?
drx10,
Thanks for the help. My appt w/ the Tesla service center can't come quick enough for me. I'm stressing out about it. A +$50k vehicle should not be giving me stress. I should be enjoying it Right now I feel my Y is a POS and I got ripped off and Tesla doesn't seem to care much. They're telling me my vehicle is "operating without fault".
If the service center tells me everything is fine, I'm getting rid of the vehicle.
nomis_nehc
Member
Do you have a friend that has a Tesla? Maybe have your friend drive your car and you drive his/her's and compare.
Good suggestion, unfortunately I'm not close to anyone that owns any model Tesla.
I'm going to use the vehicle as little as possible and wait and see what the service center says next week.
Your wh/mi is very high for 65 mph average. mine is 274 - 300 and that’s at 70 mph, those Uber wheels are very heavy at 68 Lbs each but once you start rolling that shouldn’t be an issue unless you have lots of up hills in your commute.
The next time you go for a ride and park, lightly touch your Rotors, they should be cool to the touch. If they are hot then the brake pads are dragging against it. There hasn’t been any issues with the caliper glide pins getting stuck but with a wh/mi of what you posted 379 that’s a concern.
Next long 20 mile trip set your regen to low. This will allow the ride to roll and not cause you to step on it to get it moving hard again. 68 Lbs per wheel takes A lot more force to get the car moving.
One last thing you can do to prevent jack rabbit starts and to lessen Voltage lag is to set it to Chill mode. This will reduce the initial stress on the battery when starting to move also.
Hope that helps, to us 379 wh/mi is going pretty fast, if you’re saying you are keeping it at 65 and not punching it, then there has to be something else going on.
Fred
The next time you go for a ride and park, lightly touch your Rotors, they should be cool to the touch. If they are hot then the brake pads are dragging against it. There hasn’t been any issues with the caliper glide pins getting stuck but with a wh/mi of what you posted 379 that’s a concern.
Next long 20 mile trip set your regen to low. This will allow the ride to roll and not cause you to step on it to get it moving hard again. 68 Lbs per wheel takes A lot more force to get the car moving.
One last thing you can do to prevent jack rabbit starts and to lessen Voltage lag is to set it to Chill mode. This will reduce the initial stress on the battery when starting to move also.
Hope that helps, to us 379 wh/mi is going pretty fast, if you’re saying you are keeping it at 65 and not punching it, then there has to be something else going on.
Fred
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No, I don't, but I also don't think there is single cause here .. probably just an accumulation of smaller causes, including regen. Force yourself to drive with standard regen for 3-4 days, you will get used it quickly, and it does make a difference, though as you note its not massive (it also makes one-pedal driving a reality, which is super-nice once you get used to it).
Make sure you are measuring a round trip. The weather was nice today, so i didn't need the AC, and there was some traffic that helped with the wind resistance and dropped my speed some. Going to work is downhill, so I only used 176 Wh/mi. By the time I got back home, it was at 209 Wh/mi.
Going to downhill to work.
Round trip. (Took the back roads home, so my round trip was a little better than my normal highway 230 Wh/mi.)
If all my driving was a nice smooth good weather commute (Covid traffic is still light), I'd have a 74000/209=350 mile range. My lifetime average, which includes the heavy-footed honeymoon period, is 247 Wh/mi. This is a 74000/247=300 mile range, and is slowly improving.
Going to downhill to work.
Round trip. (Took the back roads home, so my round trip was a little better than my normal highway 230 Wh/mi.)
If all my driving was a nice smooth good weather commute (Covid traffic is still light), I'd have a 74000/209=350 mile range. My lifetime average, which includes the heavy-footed honeymoon period, is 247 Wh/mi. This is a 74000/247=300 mile range, and is slowly improving.
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I agree with others that your energy consumption wh/mi is unusually high. I just took a long road trip (>4hr) last week, and I got ~280wh/mi at mostly 75mph highway speed. I ran AC at 72F (with outside temp at 85-90F) with tire pressure of 40psi. I have a Model Y LR AWD with 19" Gemini wheels. The difference between standard and low regeneration shouldn't have that much of an impact on energy consumption for your short trips. Something else is going on if it's not your brakes acting up.
MrTemple
Member
You almost certainly do live near another Y.
There's a big Model Y FaceBook group. I’m sure somebody (maybe even a MYP owner) would be willing to help.
How often are you using the brakes? If you still use the brakes as you did on an ICE car, that will greatly reduce regen, especially if you don't have it set to Standard regen.
I rarely use the brake pedal unless it is for an urgent stop. 99% of the time, I can just take my foot off the accelerator.
I rarely use the brake pedal unless it is for an urgent stop. 99% of the time, I can just take my foot off the accelerator.
I am having exactly the same problem with my Model Y 2021. The battery is functioning at about 50 percent. This problem just started - I have only 11,000 miles on my car.
What did Tesla say? Do you own the "Performance" edition or "long-range"? If you own the Performance, I found that you need to have the vehicle in "chill" mode. Even in chill mode, battery range is far short.
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