Here is the perfect example of dumb car naming. That being the Nissan S13.
In US it's called the 240SX because it has a 2.4L engine there. Makes sense.
In Japan it's called the 180SX.... because it has a 2.0L engine.....
In Europe it's called the 200SX..... because it has a 1.8L engine......

Show some other examples of bad car naming.