Tesla's Version 9 Update (2018.42.2) Brings Significant Energy Efficiency Improvements
Title: Boosting Efficiency with the Latest Version 9 Update (2018.42.2)
Improved Energy Consumption in Tesla Models
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The latest update to Tesla's software, version 9 (2018.42.2), has brought about significant improvements in energy efficiency for some users. With this update, owners of the Long Range Rear-Wheel Drive (LR RWD) Model 3 have reported a noticeable decrease in their Wh/mile consumption. Previously averaging around 220Wh/mile, these drivers are now seeing an average of 200Wh/mile or even lower.
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This increase in efficiency is not limited to just the Model 3, as Model X owners have also experienced similar changes. However, there seems to be some confusion regarding the relationship between the reduced Wh/mile and the number of rated miles used during trips. In some cases, despite using less energy per mile, the vehicle still consumes the same amount of rated miles as before the update.
Understanding the Factors Affecting Efficiency
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It may seem counterintuitive that increased regenerative braking would not significantly impact overall efficiency in normal operation, but it's important to consider other factors at play. For instance, most drivers already recover nearly all of their kinetic energy through regen without needing to use friction brakes. As such, any improvements made to regen will likely only have a minor effect on overall efficiency.
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One possible explanation for the observed increase in efficiency could be related to changes in how Tesla manages regen for cold batteries. By relaxing rules surrounding reduced regen under certain conditions, the company might be able to achieve measurable improvements in energy consumption. However, determining whether this is indeed the case would require extensive data collection and analysis – no easy task.
Comparing Efficiency Across Different Tesla Models
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It's worth noting that the efficiency improvements seen with the latest update are not consistent across all Tesla models. Some drivers, particularly those with a lighter driving style and mild weather conditions, have reported their best days achieving high 200s Wh/mile. This suggests that factors such as having an extra motor can significantly impact a vehicle's energy consumption.
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Unfortunately, swapping out summer tires for new rubber is unlikely to solve the issue of higher-than-expected Wh/mile consumption in some cases. For those seeking a road-trip car with optimal efficiency, the RWD Long Range Model 3 remains the top choice – although it is no longer available for purchase. Nevertheless, many users continue to see improved efficiency after updating their software, with some reporting highway trips costing fewer rated miles than before.