Yes, it is. I've received this question several times, and if you just begin venturing to car customization, debadging a car is totally legal. In fact, the removal of an automobile's external badge doesn't affect its safety or legality.  The thing that marks a car's identity is the Vehicle Identification Number (or VIN). Even if you eliminate the traces of its branding, its identity can still be recognized using this number. Removing the car's VIN is against the law, but it has nothing to do with the debadging process.