The South Seas apartments are fully intact and unharmed, even though they were being demolished at the beginning of The Karate Kid Part III (1989).
Danny offers Johnny, at the trade-in lot of his car dealership, a Subaru Forester, when in fact it's a Subaru Outback.
At time index 13:50, Sam's mom picks up Sam's phone to show her that she is not going to allow the incoming call. Sam's mom pushes the green button, which would answer the call, but instead it hangs up. She should have used the red button on the left instead.