@ .16 a mile (if it were a lease) that's about 44k miles difference ($7k / .16)

The actual difference in mileage is 13k or about $4960 (13k x .16), so subtracting the $4960 from $7k it's only ~ a $2k difference for the bigger engine.

Plus the '04 should have what? about a year or 2 left on the free maintenance?

I'ld say go with the '04.

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