Car maintenance schedule: what people actually forget

By Dino Budimilić · Updated July 11, 2026

Short answer: oil every 10,000–15,000 km or once a year (whichever comes first), brake fluid every 2 years, tires checked every season and swapped by temperature, plus the annual admin trio — insurance, registration, inspection. EVs skip the oil but keep everything else.

Time limits matter as much as mileage — oil and brake fluid age even in a parked car.
The expensive failures (engine wear, corroded brake lines) come from skipping the cheap items.
Insurance auto-renewal quietly costs loyal customers more — compare before it renews.
EVs aren't maintenance-free: tires, brake fluid, coolant, filters, and all the paperwork remain.

The schedule

Item	Interval	Combustion	EV
Engine oil & filter	10,000–15,000 km or 1 year	✅	—
Brake fluid	Every 2 years	✅	✅
Tire rotation / seasonal swap	Every 6–12 months	✅	✅ (wears faster)
Tire depth & pressure check	Monthly (2 minutes)	✅	✅
Cabin & air filters	Every 1–2 years	✅	✅ (cabin only)
Coolant service	Per manual (often 4–5 years)	✅	✅ (battery coolant, model-specific)
Battery (12V)	Test yearly after year 3	✅	✅ (yes, EVs have one)
Insurance review	Yearly, before auto-renewal	✅	✅
Registration + inspection	Yearly (varies by country)	✅	✅
Wipers	Yearly-ish, before the rainy season	✅	✅

Always defer to your manufacturer's service book — intervals vary by engine and oil spec. The table above is the sensible default when the book is in the glovebox and the glovebox is far away.

Why "once a year" beats "when I remember"

Oil doesn't announce its age. It degrades chemically — oxidation, moisture from short trips, fuel dilution — long before any warning light. The cars that die early aren't the ones driven hard; they're the ones whose owners skipped two cheap services in a row. The same logic applies to brake fluid: it's hygroscopic, meaning it absorbs water from the air, and wet brake fluid boils under hard braking exactly when you least want it to.

The admin trio nobody loves

Insurance, registration, inspection. None of them maintain the car; all of them maintain your right to drive it. Two habits pay off: compare at least one competing insurance quote before the auto-renewal hits (loyalty is rarely rewarded), and book the technical inspection a few weeks before the registration deadline, not on it — inspection stations know when everyone's deadline is, and so do their queues.

Let the car remind you itself

This is the kind of recurring, boring, high-stakes remembering that Don't Forget automates. Add your car once — it asks whether it's combustion, hybrid, or electric, and suggests the right reminders: oil change (combustion only), insurance review, registration, each with sensible lead times. Scan the registration document and the expiry-date reading works the same way it does for passports — on your iPhone, nothing uploaded anywhere.

FAQ

How often should I change my car's oil?

For most modern combustion cars: every 10,000–15,000 km (6,000–10,000 miles) or once a year, whichever comes first. The time limit matters even for low-mileage cars — oil degrades with age and short trips, not just distance.

Do electric cars need oil changes?

No engine oil — EVs have no combustion engine. But they still need tire rotations (EVs wear tires faster due to weight and torque), brake fluid changes, cabin filters, coolant service on many models, and the same inspections, insurance, and registration renewals.

How often should brake fluid be changed?

Roughly every 2 years, regardless of mileage. Brake fluid absorbs moisture over time, which lowers its boiling point and can corrode the brake system — and it degrades whether or not you drive.