RabbitGal, the 2.5L takes regular oil tho, unlike the synthetic recommended for the 1.8T (not sure if you're using it or not, but most do), so the oil change would still be less. But yes, the in-line 5 does take more oil than most 4 cylinders.
There are lots of deals to be had out there on cars. Shop around. Most dealers can get you out of your lease a few months early too.