I am facing a strange problem with my corolla 2015 non grande that I just bought. The odo says 80k kms but I am pretty sure the meter is reversed. Generally car is in good mechanical condition and drives pretty smoothly. But sometimes there is a very strange bubbling or shaking almost like an unbalanced wheel. It does not occur everytime. Occurs very randomly. Sometimes I can drive a 100kms before this occuring and sometimes it starts after 1km, but generally I don't feel it early on in the trip. It goes away when I turn off the car and leave it off for a couple of minutes. Even after turning off, sometimes it re occurs and sometimes it does not.
Currently I have done the following:
1. got the wheels and discs checked by dealership.
2. Also got the brakes serviced from dealership
3. Tried wheel alignment and balancing from two separate dealerships
4. Also got my suspension, axles, shocks checked from the dealership
Tires are fairly new 2022 made nexens with no punctures.
A mechanic in the dealership suggested I change the spark plugs but they look fairly new. Another one suggested I should change the CVT fluid but I fear if the car has driven 200k on the original CVT fluid, changing it may cause problems and also I never felt any problem in shifting. No jerks, no rough idling nothing.
Also the shaking is not subtle it gets very intense on high speeds.
any help will be appreciated
