MY USED TESLA LOST THIS MUCH CAPACITY SINCE NEW! 2018 MODEL 3 PERFORMANCE BATTERY HEALTH CHECK

EV Channels Review

This video investigates the battery health of a 2018 Tesla Model 3 Performance with just over 40,000 miles. The reviewer highlights significant suspension issues (lower control arms, AC compressor) that were present at purchase, but focuses on the battery degradation. Using both Tesla's in-service diagnostic and a full charge-to-dead test, the battery capacity was found to be 84% of its original capacity. This result was lower than expected given the low mileage, leading the reviewer to speculate that the car's history in hot Arizona weather and potentially inconsistent state-of-charge management contributed to the degradation. Despite the battery health concerns, the reviewer notes the car was primarily AC charged, which is a positive sign. The video concludes that while the degradation is notable, it's within the warranty period, and the owner is planning a full suspension upgrade.