Originally Posted by preeble
OK - I did some research on the EPA site. It states that the tax applies for cars that have a combined rating of 22.5 or less. The 550 x-drive auto has a combined rating of 19mpg, but I did not pay a tax when I purchased my 2013 model. While I am glad I did not pay a tax, I am confused.
The GGT is calculated using the old EPA test procedure, so the current numbers won't match-up.