2.5L = $18,595 w/heated seats (2 door) mpg = 22/30
TDI = $23,329 w/heated seats (2 door) mpg = 30/41
TDI = $4,734 > 2.5L
I drive 20,000 miles/year
2.5L = 20,000 @ 27 mpg = 740.74 gal@ $3.00/gal = $2,222.22/year
TDI = 20,000 @ 38 mpg = 526.32 gal@ $3.25/gal = $1,710.54/year
Fuel...