Batteries usually hold up long enough, unless you’re looking at 10+ year old cars.
The real issue is that the mechanics have no clue on what to check at the annual services, so they’ll let people down on the brakes, suspension, ball joints and AC fluids long before any warning lamp ever lights up on their computers. These things are assumed to break even when following the manufacturer guidelines.
Batteries usually hold up long enough, unless you’re looking at 10+ year old cars.
The real issue is that the mechanics have no clue on what to check at the annual services, so they’ll let people down on the brakes, suspension, ball joints and AC fluids long before any warning lamp ever lights up on their computers. These things are assumed to break even when following the manufacturer guidelines.