Your owner's manual has the definitive maintenance schedule for your specific vehicle. This guide gives you a universal baseline — the services that apply to nearly every car, organized by the mileage milestones where they typically fall due. Use it as a cross-check against your manual, not a replacement for it.

1

Every 5,000 miles (or 6 months)

These are the routine checks that keep small problems from becoming big ones. Do them at every oil change.

  • Oil and filter change — conventional oil every 3,000–5,000 miles; synthetic every 5,000–7,500 miles (check your manual).
  • Tire rotation — rotating every 5,000–7,500 miles extends tire life by evening out wear patterns.
  • Tire pressure check — pressures change with temperature; under-inflated tires wear unevenly and reduce fuel economy.
  • Fluid levels — top off coolant, brake fluid, power steering fluid, washer fluid, and transmission fluid if low.
  • Visual inspection — look under the car for leaks, check belts for cracking, and inspect hoses for swelling.
  • Lights check — walk around the car with headlights on; check brake lights with a helper.
2

Every 15,000 miles (or 12 months)

These services build on your 5k routine. They address filters and components that wear out over a year of driving.

  • Cabin air filter — a clogged cabin filter reduces HVAC performance and can affect air quality inside the car.
  • Engine air filter inspection — inspect at 15k and replace at 30k (or sooner if you drive in dusty conditions).
  • Wiper blades — replace when streaking starts; most blades last 6–12 months before the rubber degrades.
  • Battery inspection — check terminals for corrosion; test voltage if the battery is over 3 years old.
  • Brake inspection — measure pad thickness; check rotors for scoring or excessive runout.
3

Every 30,000 miles

The 30k service is where you start replacing — not just inspecting — consumable parts that have reached the end of their design life.

  • Engine air filter replacement — even if it looks okay, replace it at 30k.
  • Fuel filter — many modern cars have a lifetime filter in the tank, but external inline filters should be changed here.
  • Transmission fluid — automatic transmissions typically call for a fluid change every 30,000–60,000 miles.
  • Coolant flush — old coolant becomes acidic and corrodes the cooling system from the inside.
  • Spark plugs (copper/standard) — standard plugs typically last 30,000 miles. Iridium/platinum plugs last longer (see 60k).
  • Brake fluid — moisture absorbs into brake fluid over time, lowering the boiling point.
4

Every 60,000 miles

At 60k you're addressing parts that have a predictable lifespan. Doing them proactively costs less than waiting for a failure.

  • Spark plugs (iridium/platinum) — long-life plugs are typically rated for 60,000–100,000 miles.
  • Drive belts (serpentine and V-belts) — inspect for cracking and fraying; replace if showing wear.
  • Timing belt — if your engine has a timing belt (not chain), this is typically the replacement interval. A snapped timing belt destroys the engine.
  • Power steering fluid flush — old power steering fluid develops particulates that wear the pump and rack.
  • Differential fluid — rear-wheel and all-wheel drive vehicles; check your manual for interval.
  • Tire replacement — tires typically last 50,000–70,000 miles depending on compound and use. Evaluate tread depth and age (max 6–10 years regardless of tread).
5

Every 100,000 miles

The 100k mark is where many owners assume things "just start breaking." In reality, this is a planned maintenance milestone — not an age limit. Cars properly maintained through 100k often go another 100k without major trouble.

  • Timing belt replacement (second interval) — if you have a belt, replace it again here.
  • Water pump — typically replaced with the timing belt at 60k–100k since the labor overlaps.
  • Coolant hoses — rubber degrades from heat cycling; inspect all upper and lower radiator hoses and heater hoses.
  • Spark plugs (second interval) — replace long-life plugs again at 100k–120k.
  • Battery replacement — most batteries last 4–6 years; at 100k the battery is likely 6+ years old.
  • Suspension components — inspect shocks, struts, control arm bushings, and ball joints for wear.
  • Transmission service — flush and refill automatic transmission fluid if not done at 60k.
Always check your owner's manual first. Intervals vary significantly by manufacturer, engine type, and driving conditions. This checklist is a general baseline — your manual's schedule is the authoritative source for your specific vehicle.

The difference between a car that hits 200,000 miles and one that dies at 120,000 is usually documentation and consistency. Track every service, follow the intervals, and the maintenance schedule does the rest.

For a deeper look at how to read your manufacturer's schedule — and how to build a personal tracking system — see our guide on how to read your vehicle maintenance schedule.