how long does it take for the motormounts and transmission to go bad.?

The answers are no. The used dealership failed to provide me a copy of or do a drivetrain inspection so there is a truth in the product offered here. However I'm trying to get some fact in check. When I test drove the vehicle I made the salesmen aware of a plastic sounding ticking noise in the front engine compartment to which he just blew it off saying that happens when cars get some age., 94K miles. I also had them check the vehicle for a strong pull to the left I have only had the vehicle less than three weeks and drove less than 200 miles but I'm trying to ascertain is what this a pre-existing issue. Thank you

My suggestion would be to aggressively communicate with the used vehicle sales folks that you bought the vehicle from and express your concerns and seek resolution. Buyer indeed beware, but I hold hope that the dealer that sold you the vehicle is willing to work with you since you purchased it so recently. Best of luck.