Like all car manufacturers, Tesla has to abide by the Magnuson-Moss Warranty Act, which prohibits them from canceling the new car warranty on your Tesla Model 3. However, if you make the modifications and your car has trouble down the road, Tesla may claim that the problem stems from your modified suspension.
If Tesla makes such a claim and denies warranty service for your vehicle, you might have to pay attorney’s fees to dispute the decision. So while modifying a new vehicle doesn’t outright cancel the warranty, it poses the risk of being denied warranty-covered services.
Actions that could void your warranty include: