We have an 06 Jetta TDI.The car performs well and the mileage and torque are impressive.
However....You have to figure out if the extra money up front for the diesel is justified,in other words,how long before the fuel savings,pay back the extra cost for the motor.
Then...at 64k,and every 64k after,you will get hit with a transmission service for over 600 dollars.You must do this to protect your warranty.
Short story,I don't think this car has the ability to pay for itself now.
2.5 for me.