I've had my 2018 M3 Midrange for 6 months now and have about 4700 miles on the odometer. Up until about 3 weeks ago, a 90% charge always resulted in a starting range of 236-237 miles and the less than 5 times I'd charged to 100% always yielded a starting range of 263-264 miles. Suddenly, from one charge to the next, the displayed starting range after a charge to 90% or 100% is consistently 10-12 miles less.
I saw on another thread that there was recently a rated range change to the Model S & X to better protect the battery, but I didn't think that affected the Model 3. I tried driving the car down to less than 10% and recharging to 100% and then subsequently charging to 90% consistently, but the rated range hasn't budged.
Does the displayed range beginning at a particular state of charge dynamically adjust over time? I would think the rated range is the rated range and will always be the same starting out and then the battery will deplete based upon driving efficiency from that point. It seems odd the car would be so precise and consistent for 5.5 months and 4500 miles and then suddenly shift to a new number and hold that constant. My driving mix (70% city/30% hwy) and habits haven't changed since I got the car.
Has anyone else experienced this behavior? What is the actual reason for the sudden drop/adjustment? If it's just normal battery degradation that happens during the first year and levels out, is it normal for it to occur at the 6 month/5000 mile point and happen all of a sudden versus gradually? Do I need to account for a 10-12 mile or 5% loss of range pad when planning longer trips now? Thanks.
I saw on another thread that there was recently a rated range change to the Model S & X to better protect the battery, but I didn't think that affected the Model 3. I tried driving the car down to less than 10% and recharging to 100% and then subsequently charging to 90% consistently, but the rated range hasn't budged.
Does the displayed range beginning at a particular state of charge dynamically adjust over time? I would think the rated range is the rated range and will always be the same starting out and then the battery will deplete based upon driving efficiency from that point. It seems odd the car would be so precise and consistent for 5.5 months and 4500 miles and then suddenly shift to a new number and hold that constant. My driving mix (70% city/30% hwy) and habits haven't changed since I got the car.
Has anyone else experienced this behavior? What is the actual reason for the sudden drop/adjustment? If it's just normal battery degradation that happens during the first year and levels out, is it normal for it to occur at the 6 month/5000 mile point and happen all of a sudden versus gradually? Do I need to account for a 10-12 mile or 5% loss of range pad when planning longer trips now? Thanks.