If we use it as a plane lol then it shall cross 3 million mark. Lol. I meant 30k or 40 k. Kms
Yes it's a problem when the same it doesn't do in front of the mechanic . For that I use cell to make its video of the problem when at home. That shall help.
I drove 05 Corolla (2NZ-FE non vvti) for 134,000 kms not a single sound from engine. Corolla timing chains last forever, never heard anyone broke or replaced it.