The Complete Car Service Checklist for Every Interval

A practical car service checklist covering every fluid, wear item and safety check, with real intervals and honest USD cost ranges.

A good car service checklist is the difference between a workshop that quietly replaces what needs replacing and one that hands you a surprise bill six months later. Whether you are booking a garage or doing the work on your driveway, this car service checklist walks through every fluid, wear item and safety check that matters, with realistic intervals and honest cost ranges. Use it as a vehicle service checklist you can tick off item by item, so nothing gets skipped and nothing gets billed twice.

Servicing splits into two levels. An interim service (roughly every 6 months or 6,000 miles / 10,000 km) covers oil, filters and safety checks. A full service (every 12 months or 12,000 miles / 19,000 km) adds deeper inspection and more replacement items. Below, each section tells you what to check, how, and when.

Engine oil and filter

Oil is the single most important item on any car service checklist. It lubricates, cools and cleans the engine, and it degrades with heat and mileage whether you drive hard or not.

1. Park on level ground and let a warm engine sit 5-10 minutes so oil drains back to the sump.
2. Pull the dipstick, wipe it, reinsert fully, then read the film. It should sit between MIN and MAX.
3. Check colour and feel. Amber to light brown is healthy; gritty, milky or strongly burnt oil needs investigation.
4. Replace oil and the oil filter together at every service using the exact grade on the oil cap (for example 5W-30 or 0W-20).

An oil and filter change costs $40-$120 in parts if you do it yourself, or $80-$200 at a workshop. Never overfill; add oil 200-300 ml at a time and recheck, because too much oil is as damaging as too little.

Fluids: coolant, brake, gearbox and more

Every service should verify the full fluid set. Low or contaminated fluid is a cheap fix now and an expensive failure later.

Never open a coolant cap on a hot engine; the system is pressurised and can spray scalding fluid. A coolant flush runs $70-$150, a brake fluid change $70-$150, and a gearbox service $150-$350 depending on capacity.

Filters: air, cabin and fuel

Filters are cheap, quick, and frequently overlooked on a basic service.

• Engine air filter: Replace every 15,000-30,000 miles (24,000-48,000 km). A clogged filter chokes airflow and dents fuel economy. Cost: $15-$40.
• Cabin (pollen) filter: Replace every 12,000-15,000 miles or annually. A dirty one causes weak airflow and musty smells. Cost: $15-$50.
• Fuel filter: On many cars, replace every 30,000-60,000 miles. A blocked filter causes hesitation and hard starting. Cost: $50-$180 fitted.

Ask your garage to confirm which filters are included; "a service" at one shop may only mean oil and the air filter.

Brakes and tyres

These are the safety-critical items, so treat any change in feel or noise seriously. A light squeal from wear indicators is normal near the end of pad life; deep grinding means metal on metal and rising costs.

Brake checklist:

• Measure pad thickness; replace below about 3 mm.
• Inspect discs (rotors) for a deep lip, scoring or heat cracking.
• Check for fluid leaks at callipers and flexible hoses.
• Test the handbrake holds on an incline.

Tyre checklist:

• Set pressure cold to the door-jamb figures, not the tyre sidewall maximum.
• Check tread; grip in the wet falls sharply below 3 mm even though 1.6 mm is the legal minimum in most regions.
• Look for bulges, sidewall cracks and uneven wear that hints at alignment or suspension problems.
• Rotate tyres every 6,000-8,000 miles to even out wear.

Front pads cost $100-$300 per axle; discs and pads together $250-$500 per axle. A single fitted tyre runs $80-$250, and wheel alignment $50-$120. Our free car tools include a tyre pressure and tread reference you can use between services.

Belts, battery and electrics

The timing belt is the item that turns a missed service into a scrapped engine. On many designs a snapped belt bends valves and destroys the head.

• Timing belt: Replace every 60,000-100,000 miles (100,000-160,000 km) or every 5-7 years. Cost: $400-$900, far cheaper than the engine rebuild a failure causes. Chain-driven engines usually need no scheduled replacement but should be checked for rattle.
• Accessory (drive) belt: Inspect for cracks and glazing; replace as needed, typically $80-$200.
• Battery: A lead-acid battery lasts 4-6 years. Load-test it, clean corrosion off the terminals, and tighten the clamps. Replacement: $100-$250 fitted.
• Lights and wipers: Walk around and test every exterior light, including brake and reverse. Replace wiper blades that smear ($10-$30).

If a dashboard warning appears during your checks, read the fault before paying for diagnosis. Look it up with our OBD-II code lookup to understand what the car is actually reporting.

Under the car and under the bonnet

A proper service includes a look at parts you rarely think about.

• Inspect suspension bushes, ball joints and track rod ends for play and torn boots.
• Check the exhaust for blowing joints and corrosion.
• Look for oil, coolant and fuel leaks, and note where they originate.
• Check CV joint boots for splits, which let grease out and grit in.
• Confirm the spare tyre (or repair kit) is present and usable.

Spark plugs belong here too: replace petrol plugs every 30,000-60,000 miles depending on type ($40-$150 fitted). Worn plugs cause misfires, rough idling and poor economy.

Match the checklist to the interval

Use the interval in your handbook and follow whichever limit, time or mileage, comes first. This table maps the checklist to the typical service levels.

Keeping a documented service history is not just good practice; a full record can add several hundred dollars to resale value. For a deeper look at intervals by mileage, see our full service schedule guide.

A quick pre-service routine you can do yourself

Running through these before you book saves money, because you arrive knowing roughly what the car needs.

1. Check oil and coolant levels with the engine cold.
2. Set all four tyre pressures and scan for damage.
3. Test every light and both wipers.
4. Note any warning lights, noises or smells and when they occur.
5. Compare mileage against the table above to know which service is due.

DIY checks catch developing faults early, but for major or safety-critical work such as brakes, steering, suspension or timing components, have a qualified mechanic carry out or verify the repair.

Frequently asked questions

What is the difference between an interim and a full service?

An interim service is a lighter, more frequent check, usually every 6 months or 6,000 miles, covering oil, filter and core safety items. A full service, done annually or every 12,000 miles, adds more filters, a detailed brake and suspension inspection, and additional fluid checks. Alternating between the two through the year keeps a car reliable without overspending.

Can I service my own car and keep the warranty valid?

In most regions you can service your own car without voiding a manufacturer warranty, provided you use the correct parts and fluids to the required specification and keep dated receipts and records. The key is proof: keep the old parts, note the mileage, and file every receipt. Anything safety-critical, or work that needs specialist tools, is still best left to a qualified workshop.

How much should a full car service cost?

A basic interim service typically costs $80-$200, while a full service runs $150-$400 depending on the car, oil grade and what is due. Major services with a timing belt, spark plugs or a gearbox service can reach $500-$1,200. Getting an itemised quote against a checklist like this one lets you see exactly what you are paying for and refuse work that is not yet needed.