Puzzling Charge/Range Issue
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AudiWorld Member
Joined: Dec 2001
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From: North Bay Area CA
Puzzling Charge/Range Issue
So, per Audi's recommendation, I regularly charge my wife's 2019 e-Tron to 80%. The car's predicted range at this charge level has always been 165 to 175 miles +/- depending on the ambient temperature.
Because we've been making a spate of longer-range trips recently, I set my last four or five sessions in a row to charge to 100%. Predicted range has been around 210 miles at this level and depending on how I drive I've been able to beat this by a bit. On our final trip I also charged (for the first time!) at a 150kv EA DC charger to top up to 85% before returning home.
Last night I programmed the car once more to charge the battery overnight at home to its normal 80% level. But this morning, to my surprise, the predicted range was shown as only 150 miles.
Is this a calculation glitch that will sort itself out once the car is driven and charged again a few times to 80% or is it the first sign of a problem? I know Audi says that charging to 100% will eventually reduce battery performance but I can't believe a handful of full charges will case this.
Has anyone had a similar experience? Any thoughts?
(FWIW I've not yet had the software update done which increases range.)
Because we've been making a spate of longer-range trips recently, I set my last four or five sessions in a row to charge to 100%. Predicted range has been around 210 miles at this level and depending on how I drive I've been able to beat this by a bit. On our final trip I also charged (for the first time!) at a 150kv EA DC charger to top up to 85% before returning home.
Last night I programmed the car once more to charge the battery overnight at home to its normal 80% level. But this morning, to my surprise, the predicted range was shown as only 150 miles.
Is this a calculation glitch that will sort itself out once the car is driven and charged again a few times to 80% or is it the first sign of a problem? I know Audi says that charging to 100% will eventually reduce battery performance but I can't believe a handful of full charges will case this.
Has anyone had a similar experience? Any thoughts?
(FWIW I've not yet had the software update done which increases range.)
Last edited by Mike in CA; Feb 2, 2022 at 04:08 PM.
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From: DC
So, per Audi's recommendation, I regularly charge my wife's 2019 e-Tron to 80%. The car's predicted range at this charge level has always been 165 to 175 miles +/- depending on the ambient temperature.
Because we've been making a spate of longer-range trips recently, I set my last four or five sessions in a row to charge to 100%. Predicted range has been around 210 miles at this level and depending on how I drive I've been able to beat this by a bit. On our final trip I also charged (for the first time!) at a 150kv EA DC charger to top up to 85% before returning home.
Last night I programmed the car once more to charge the battery overnight at home to its normal 80% level. But this morning, to my surprise, the predicted range was shown as only 150 miles.
Is this a calculation glitch that will sort itself out once the car is driven and charged again a few times to 80% or is it the first sign of a problem? I know Audi says that charging to 100% will eventually reduce battery performance but I can't believe a handful of full charges will case this.
Has anyone had a similar experience? Any thoughts?
(FWIW I've not yet had the software update done which increases range.)
Because we've been making a spate of longer-range trips recently, I set my last four or five sessions in a row to charge to 100%. Predicted range has been around 210 miles at this level and depending on how I drive I've been able to beat this by a bit. On our final trip I also charged (for the first time!) at a 150kv EA DC charger to top up to 85% before returning home.
Last night I programmed the car once more to charge the battery overnight at home to its normal 80% level. But this morning, to my surprise, the predicted range was shown as only 150 miles.
Is this a calculation glitch that will sort itself out once the car is driven and charged again a few times to 80% or is it the first sign of a problem? I know Audi says that charging to 100% will eventually reduce battery performance but I can't believe a handful of full charges will case this.
Has anyone had a similar experience? Any thoughts?
(FWIW I've not yet had the software update done which increases range.)
Thread Starter
AudiWorld Member
Joined: Dec 2001
Posts: 205
Likes: 63
From: North Bay Area CA
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Joined: Mar 2014
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They don't call it the Guess-O-Meter for nothing!
Just drive it normally. You should be able to equal your normal milage. And you should be able to HAMMER on the DC charging a lot over the life of the car.
The only thing that would cause problems is if you have a bad cell / BMS. There are reports of this happening but the symptoms are now understood quite well: your actual range will continually reduce and more importantly the charge carrying ability of the battery will decrease. If you don't see either of those issues, it's just the GOM and it will reset...
Just drive it normally. You should be able to equal your normal milage. And you should be able to HAMMER on the DC charging a lot over the life of the car.
The only thing that would cause problems is if you have a bad cell / BMS. There are reports of this happening but the symptoms are now understood quite well: your actual range will continually reduce and more importantly the charge carrying ability of the battery will decrease. If you don't see either of those issues, it's just the GOM and it will reset...
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Joined: Oct 2017
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From: USA
Your longer trips ... were you driving at higher rates of speed on highways/interstates? Electric vehicles are not as efficient at higher speeds and the GOM will take your recent trips into consideration when factoring range and decrease the range estimate. Like has been said, just keep driving, and the GOM will reset itself with your normal everyday driving in time.
Thread Starter
AudiWorld Member
Joined: Dec 2001
Posts: 205
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From: North Bay Area CA
Your longer trips ... were you driving at higher rates of speed on highways/interstates? Electric vehicles are not as efficient at higher speeds and the GOM will take your recent trips into consideration when factoring range and decrease the range estimate. Like has been said, just keep driving, and the GOM will reset itself with your normal everyday driving in time.
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I'm quite sure 99% of the time it would. I was heading home with a 200 mile drive so I did a fill charge at a l2 62.5 kwh Chargepoint charger and the battery was cold (outside temp about 45). At 100% charge the car said 169 mile range but when I looked at the app, it said 208 miles.
Terlonz
Joined: Oct 2010
Posts: 838
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From: Colorado
This is one of several GOM threads about this topic. If you drive in a manner different than usual, you can expect the GOM in just about any EV to reflect that change, and to change accordingly. It's how GOMs work. The number is based on recent driving habits, and if you change your habits you should therefore expect the number to change.
It's a symbolic number regardless, meaningless to most drivers in real life, day-to-day driving. Your current efficiency and state of charge are all that matter on the daily unless you're a super heavy commuter.
It's a symbolic number regardless, meaningless to most drivers in real life, day-to-day driving. Your current efficiency and state of charge are all that matter on the daily unless you're a super heavy commuter.
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