Is it illegal to rebadge car model/brand? eg. From Toyota logo to Lexus, or Merc E200 to E250 etc.

Hi, you can check on this link for more information on vehicle modifications: https://www.onemotoring.com.sg/content/onemotoring/home/owning/modification.html#Type_of_modifications. As we understand, it is not illegal to rebadge your car's model as long as your car is identifiable as the same make and model as listed via its vehicle plate number.