The second battery pack replacement happened at 324,000 miles and Tesloop says it experienced a much more aggressive battery degradation of ~22%. Tesla said that there was an issue with the pack: Diagnostics show the high voltage battery assembly is not functioning appropriately. Removed and replaced the high voltage battery assembly. Replaced with a 90kw permanent battery replacement. Pushed updated firmware to ensure proper communications. Upon completion, function test was performed to confirm concern has been rectified.
The entire thing is BS because how many people drive 400,000 in 3 years. Here it the truth of the matter. Most people in 3 years will drive 30,000 miles. But the battery will fail more as a relation to time than use. So 30-40 thousand miles = You need a new battery.