A well adhered to maintenance program pays off in numerous ways. Keeping a vehicle up to 200,000 miles versus buying a new car more often, saves tens of thousands of dollars. Keeping maintenance up to date keeps a vehicle much more reliable and less prone to a breakdown or emergency repair.
The maintenance schedule in the owner’s manual isn’t always complete. Every car maker wants their car to be perceived as “low maintenance”, hence 10,000-mile oil changes, 100,000-mile spark plug changes and “lifetime” coolant. It’s not what is best for the vehicle but it looks good in the glove box on the showroom floor.