In the automotive industry, upbadging is when you are driving a lower-
trim or entry level
trim version of a specific vehicle and you decide to add custom badges, decals, and/or logos from a higher
trim in order to make your vehicle look faster/more powerful/more expensive than it actually is.
For example: adding Hellcat badges to an SXT Dodge Challenger is
indeed upbadging, and definitely the most godawful of them all. This is because a Hellcat V8 can put out 707hp while a V6 SXT only has 305hp. You drive an upbadged SXT and try to
race an actual Hellcat, you're gonna look stupid and you're gonna get called out.
Don't do it. Either be proud of your ride or save up for the real deal.