hi amith, thats a nice log that you maintain, i use a small free tool called Car Monitor available from
Car Care Automotive Maintenance Software - Free Mycar-Monitor for free download to track expenses related to my car.
But recently my hard disk crashed and i could not recover the data how foolish of me not to backup data properly.
nice to know that information from TBHP lead you to chosing you car, i am sure it is a good choice and the car will not let you down.
Happy and Safe Motoring !