@Highlander1018 Has Tesla offered to do anything to make this right? Directing you into one of these cars without the disclosure is pretty messed up.
They
should offer to either undo the sale (buyback I guess including all taxes/fees) or give you a nice refund.
As for resale, you don't need to disclose the battery age. However if the car's rated range estimate shows more degradation than a typical M3LR of its age, that could affect resale. All the more reason for Tesla to give you a nice discount for sneaking an old battery into your purchase without disclosure.