Do you plan on keeping the car for
at least as long as the warranty period
and keeping it stock that whole time? IMO that's the only way it would make sense to get the extended warranty. I personally don't think it's really worth it anyway, as you still have the powertrain warranty for 5yr/60k miles.
4.49% is pretty high; I'm sure you can get a better rate from your bank or credit union.
The whole 2-3% with the contingency being the extended warranty also sounds like BS. If they can sell it to you at that rate with extra "goodies", they should be able to sell it to you at that rate without the crap. I would negotiate for this first.
Also, don't put all of your eggs in one dealership. Talk to the others too
Edit: Assuming you are taking a loan of $25700 over 60 months, 4.49% would be $3041 in total interest. If we're staying with the same loan amount, 2.7% would put you at $1803 total interest, not $2010. Just incase you were getting these figures from the dealer.