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Because they're driving 80 and no one can defy the laws of physics?
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Why is No One Talking About All of the Improvements to the 2025 GT?!?
- Thread starter Blue Lectroid
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I mean…I thought there Lucid Air was the most efficient luxury sport sedan? Shouldn’t Lucid do better at 80 than Tesla or Porsche? Both have those cars have way lower efficiency ratings
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Ummm....were the Model S and the Taycan also tested at 80mph? The Model S and the Taycan both have higher drag coefficient, correct?
If so, @momo3605's point has validity, correct? Physics should work the same for all 3 cars, right?
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Maybe the Air is more or just as efficient at 2.9 mi/kWhr and 155 miles traveled, the 2023 Air is 3.1mi/kWhr and 144 miles traveled
Taycan is 2.7 mi/kWhr and 193 miles traveled
Model S is 2.9 mu/kWhr and 132 miles traveled
This efficiency number is based on miles driven divided by power delivered from the charger. The test starts by preconditioning the battery, start charging at 10%, charge 15 minutes, drive 80 mph until half the added range is used, turn around, start preconditioning and drive back to the charger. Hence, the energy used to precondition is included in this as well as any energy used to cool the battery during charging. Cars that charge faster will use more energy to cool the battery during charging. The bottom line is that this in not the usual efficiency number that we think of because it is confounded my many other variables. I don't think that @momo3605 efficiency numbers really have any meaning in this context. It does well in the test because of fast charging and efficient driving, not its battery size which is not really a factor in the test.
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Yea this was interesting too. Could be statistical noise, environmental factors, etc…but definitely curious that the new model went backwards in raw efficiency terms.
Preconditioning should be a super minor variable. If you’re driving along at 80mph, your battery is already pretty warm. And faster charging does not have any relation to the temps. That entirely depends on the cell chemistry. For instance Rivian batteries actually have a super low preconditioning temp, while Teslas have a blazing hot ideal preconditioning temp (for similar peak rates). I’m not sure if Lucid shares any metrics around this.
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It's not minimal. Lucid turns on preconditioning to drain the batteries for any HV pack repairs...
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Ok…and how is that relevant?
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Please tell me how you are violating the laws of physics. All battery cells have a relationship between temperature and charging speed.
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I just told you…Rivian ideal preconditioning temp is 72F. In most cases it doesn’t even need to heat up, it needs to cool down to fast charge. Same with the IONIQ 5
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You are completely missing the point. Faster charging requires more cooling to keep the battery temperature down to continue fast charging. Battery temperature is very relevant to charging speed. I am not sure hwy you insist that it is not. The energy used for cooling the battery during DC fast charging is very important for the 105 challenge. Of course, Rivian is not known for charging speed so may be it a less significant for Rivian.
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And my point is that you You don’t know how much heating or cooling is needed for preconditioning. Especially if you’re cruising along for 2 hours at 80mph. You’re likely already preconditioned. Neither of us knows the effect. IONIQ 5 charges faster than the Lucid yet has a low temp as well.
The only thing that we do know, is that the efficiency at 80mph is 2.9 miles/kw…which i found surprisingly low. Lower than the 2023 even
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because you stated it was a minor variable but it is not. It is a major drain on the battery in Lucid's case.
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Fair…but I don’t think you can discount the effect it has on the other cars. It could be a bigger drain on the Tesla or the Taycan. But we don’t know. It may have an effect sure, but all the cars are subject to the same conditions
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