Right but the comment you’re replying to is talking about sticker price and gas, not registration.

Texas used to, maybe still does. You made me try to look it up and couldn't find a simple source. Plenty of states use MRSP or some measure of the vehicle's value.

Back in the day (Tulsa, OK) my friend had a 2-ton dump truck with antique tags (over 25-yo), paid $20. Meanwhile, someone buying a super-light Corvette was paying $650. (early 90s money)

I say go on weight, maybe some factoring of value. Registration fees are paying for roads, if your monster vehicle is doing more damage, you pay more.

The F350 is the smallest vehicle where they charge by weight. Unfortunately they don't check for how much you use it, so for the 6 times a year I use mine I'm paying $.10/mile - while someone else who uses it for hauling as a job is paying $.01/mile.