I wonder if that's the original fluid in the Corolla. Are you going to change it out with some fresh fluid?250,000 miles on my 2017 Corolla and the CVT feels the same as a new car. 197,000 miles on my 2003 Honda CVT with no issues. No service history on either but wouldn't hesitate buying again. Now for the Nissan CVTs I've had, I'd avoid them if keeping it much past the warranty.