Car maintenance schedule: what to do and when

Typical intervals, as ranges

The ranges below come from AAA and Toyota guidance. They are typical figures for modern cars, not a schedule for your car. Where your manual gives a different number, the manual wins.

• Engine oil and filter: 5,000 to 7,500 miles for cars up to 15 years old, and up to 15,000 miles with full-synthetic oil (AAA). Toyota gives 5,000 to 7,500 miles, or up to 15,000 for many newer vehicles, and says to follow the manual.
• Tire rotation and brake inspection: every 6,000 to 8,000 miles (AAA).
• Brake fluid: most manufacturers recommend replacing it every two or three years, because it absorbs water (AAA).
• Battery: usually 3 to 5 years, sometimes longer. Near the three-year mark, have it tested (AAA).
• Tires: check pressure and tread monthly. AAA research found wet-weather grip drops sharply at 4/32 inch of tread, so it suggests replacing tires at that depth.
• Coolant level, battery terminals and lights: look every few months. AAA suggests lights and wipers every two to three months and coolant every six.

Time or mileage, whichever comes first

Most schedules give two limits for one job, such as every 7,500 miles or every 12 months. The service is due when you reach the first of the two. A car that covers only 4,000 miles a year can still reach the month limit first.

The reverse also holds. If you drive 25,000 miles a year, you will hit the mileage limit long before the months run out. Keeping both numbers in view is the whole job, and it is the part a sticker on the windshield handles worst.

When your driving counts as severe

Manuals often print a second, shorter schedule for severe or heavy use. Toyota lists frequent short trips, towing, extreme heat or cold, dusty roads and regular stop-and-go traffic as conditions that may call for more frequent oil changes.

The exact definition differs by maker, so read the section in your own manual. If you make mostly short trips or sit in stop-and-go traffic, check whether the severe schedule applies to you.

How to find the schedule for your own car

Start with the owner’s manual, in the glove box or as a PDF on the maker’s owner site. Look for the maintenance section. It lists each job with a mileage and a time limit, and often a separate table for severe use.

Warranty matters here. AAA says you can have routine service done at any shop, but you should document the work done outside the dealer, so keep every receipt. If a service is skipped by mistake, do it as soon as you notice rather than waiting for the next one.

What to record each time

A useful service record is short. For every job, write down:

• The date and the odometer reading.
• What was done, and who did it.
• The parts or fluids used, such as the oil grade.
• The cost, and the receipt itself.
• When it is next due, by miles and by date.

Quick checks between services

Some jobs are not on a shop schedule at all. AAA suggests checking the oil level on the dipstick each month and tire pressure when the car has sat for about three hours. The right pressure is on the driver’s door jamb sticker, not on the tire sidewall. FuelEconomy.gov adds that under-inflated tires lower gas mileage by about 0.2% for every 1 psi drop in average pressure, and that properly inflated tires are safer and last longer.

Do not ignore warning lights. FuelEconomy.gov notes that a check engine light can be something as small as a loose gas cap, but it can also be a problem that costs more later, so have it checked.