Scheduled maintenance is the cheaper path
A vehicle that is maintained gets looked at on a plan. Wear is found while it is still wear, fluids are changed before they stop working, and the owner knows roughly what is coming.
A vehicle that is repaired gets looked at when something has already gone wrong, and by then the failure has usually taken something else with it.
Scheduled maintenance here follows the manufacturer's schedule for the vehicle. Worth knowing: most work vehicles are in severe service without anyone deciding that, because short trips, idling, towing and dust all qualify. Tell the store how the vehicle actually spends its week and the interval can be set to match.

