Hey,

I have a 2018 Corolla and do a lot of driving for work. Some weeks I am putting 500+ miles on my car. I do about 20k miles a year. My car is just shy of 80k miles now. After a long day, I notice my car will tend to vibrate at idle. It also vibrates from a stop when gaining speed if I am traveling on a straight line (mind you, the 2018 was a year before the launch gear for Toyota Corolla.) the CVT is slow to get going from stop but moves just fine afterwards. I change the transmission fluid regularly at 30k miles as you’ve suggested. Not sure if this is to be expected after a long day of driving or if it’s a larger issue with the CVT that will get worse as the car ages.

Thanks