Hi Rainbow73. Maintenance-wise, there is no cost difference between manual and automatic tranny for approximately the first 5 years, or 100,000 km, in my experience. But actual maintenance costs will still depend on how you use/abuse your car.
Just follow the prescribed PMS schedules and you should experience no major problems that is out of the ordinary whether it's a manual transmission or automatic transmission that you choose. Pareho lang gastos
to maintain either one. HTH.