Originally Posted by Team Plutonium
Wait, you are concerned about $200.92 more a month? No offense, but you bought the wrong car.
Not really sure what this has to do with the question. $200 a month is not chump change no matter how much you make a year. That amount can easily pay off other bills (most importantly a mortgage) or enhance quality of life in other areas. I for one love my M3 but not $200 more a month type of love.
OP if you're strongly considering paying the vehicle off in 2 years consider keeping the loan as is and put the additional payments towards the loan as planned. This way if things get tight for a month or two you can revert back to your $300 payment. Not the most economical advice but more a best of both worlds option.