In this article:
Modern cars are engineering marvels, but they aren't magic. While you might get away with skipping a car wash, skipping scheduled maintenance is a ticking time bomb for your wallet. The industry standard for keeping your car running like new is the 30-60-90k schedule.
What is the 30-60-90k Rule?
It's a simple mnemonic for the major service intervals recommended by most manufacturers. While every car is different (always check your manual!), these milestones are universally recognized as critical points for inspection and replacement of wear items.
The average amount drivers save annually by adhering to a preventative maintenance schedule vs. paying for emergency repairs.
- Source: AAA30,000 Miles: The Basics
At this stage, your car is still relatively new. The factory warranty is likely still in effect, but consumables are starting to wear out.
- Air Filters: Engine and cabin air filters are likely clogged with dust and pollen.
- Fluids: Transmission and coolant fluids should be checked, though they might not need changing yet.
- Fuel Filter: Often replaced to ensure clean fuel delivery.
60,000 Miles: The Major Service
This is the big one. By now, rubber hoses are starting to dry out, belts are stretching, and fluids are breaking down.
Critical Component: Timing Belt
If your car has a timing belt (vs. a chain), this is often the interval to inspect it. A snapped timing belt can instantly destroy your engine.
Checklist for 60k:
- Replace brake pads and rotors if worn.
- Flush coolant and transmission fluid.
- Inspect battery and charging system.
90,000 Miles: The Critical Check
Approaching the 100k mark, your car is entering its "middle age." If you've kept up with maintenance, it should still run perfectly. If not, this is where expensive failures happen.
Spark plugs are a must-change here. Worn plugs cause misfires, poor fuel economy, and can damage your catalytic converter.
Visualizing the Timeline
