Free Australian vehicle service due calculator. Combines manufacturer-recommended service intervals for common AU passenger and SUV brands (Toyota, Mazda, Hyundai, Kia, Ford, Mitsubishi, Nissan, Subaru, Honda, Holden, VW, BMW, Mercedes) with your vehicle's current KM and last service details to calculate the next-service-due date and KM — whichever comes first. Useful for owners planning a logbook service appointment, and for workshops quoting customers the exact next-due interval.
Manufacturer interval
15,000 km / 12 months
Whichever comes first
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Every Australian car manufacturer publishes a service schedule that defines when your vehicle should be inspected and serviced — both a kilometre interval and a time interval, with the rule being "whichever comes first". The most common AU intervals are 10,000 km / 12 months (Mazda, Nissan, Honda) and 15,000 km / 12 months (Toyota, Hyundai, Kia, Ford, Mitsubishi). European premium brands (BMW, Mercedes-Benz, Audi) typically use longer fixed intervals (15,000-25,000 km) or condition-based service systems that calculate the interval dynamically.
The next-service-due calculation is the earlier of two triggers — the kilometre trigger and the time trigger:
Next service KM = KM at last service + interval KM
Next service date = date of last service + interval months
Next service due = whichever of the two comes first
A Toyota Corolla was last serviced at 30,000 km on 1 March 2025. Toyota's standard interval is 15,000 km / 12 months, so:
If the car is averaging about 14,000 km/year, it reaches 45,000 km roughly a month after the 12-month date, so the time trigger (1 March 2026) comes first and is the actual due point. A rideshare or mobile-tradie vehicle doing 25,000 km/year would hit 45,000 km in about October 2025 — well before the date trigger — so the KM trigger comes first.
A minor service (every interval) covers an oil and filter change, fluid level checks, brake inspection, tyre pressure, and a visual safety inspection. A major or logbook service lands at multiples of the minor interval — typically every 3rd or 4th service, or every 60,000-100,000 km — and adds spark plug replacement, air and cabin filter, fuel filter (for diesels), brake fluid flush, coolant change, and, depending on the vehicle, timing belt and transmission service.
Most Australian manufacturers run a capped-price service programme covering the first 5-7 logbook services with a known fixed price per visit. Toyota, Mazda, Hyundai, Kia, Ford, Mitsubishi, Subaru and Isuzu all have schemes running 5-10 years from new. After the capped-price programme ends, independent workshops servicing to manufacturer specs maintain Australian Consumer Law consumer-guarantee coverage on the work.
Workshops servicing customer vehicles benefit from capturing both the kilometre and the date of every service, so the next-due trigger fires at the correct moment regardless of which comes first. Low-kilometre customers (under 8,000 km/year) typically hit the time trigger; high-kilometre customers (rideshare, mobile tradie, long commute) typically hit the KM trigger. A reminder system that watches both surfaces every customer at the right moment.
Take your manufacturer's service interval (for example 15,000 km / 12 months for a Toyota) and apply it two ways: add the kilometre interval to the odometer reading at your last service, and add the month interval to the date of your last service. Your next service is due at whichever of those two comes first. Example: a Toyota last serviced at 30,000 km on 1 March 2025 is next due by KM at 45,000 km and by time on 1 March 2026 — whichever you reach earlier.
Toyota's standard capped-price service interval in Australia is 15,000 km / 12 months for most current passenger and SUV models (Corolla, RAV4, Camry, Kluger, Yaris Cross). Hilux, Prado and LandCruiser 70/300 Series use a shorter 10,000 km / 6 months interval. Always confirm against your vehicle's logbook, as older models (pre-2018) often used a 10,000 km interval.
Each manufacturer publishes its AU service schedule on its website or in the vehicle's owner manual. The intervals shown here reflect the standard fixed-interval programme for current passenger and SUV models. For BMW, Mercedes-Benz, Audi and some VW models the actual interval is condition-based — the vehicle's onboard computer calculates it based on driving conditions, oil quality and other factors. We show a typical mid-range figure for those.
Whichever comes first. For a low-kilometre driver (say a city commuter doing under 8,000 km/year), the 12-month time interval lands first. For a high-kilometre driver (rideshare, mobile tradie, long commute), the KM interval lands first. The calculator above takes both into account and shows you the earlier of the two as the actual next-due date.
Minor services (every interval) cover the basics: oil and filter change, fluid level check, brake inspection, tyre pressure, visual safety check. Major / logbook services land at multiples of the minor interval (typically every 3rd or 4th service, or every 60,000-100,000 km) and add spark plug replacement, air filter, fuel filter, cabin filter, brake fluid flush, coolant change, and (depending on the vehicle) timing belt and transmission service.
For new vehicles under the manufacturer's capped-price service programme, missing a logbook service window can affect warranty coverage on the specific affected systems. Most manufacturers allow a small grace window (typically 1,000-3,000 km or 1-2 months) but you should call the dealer or check your warranty terms if you're past it. After the capped-price programme ends, independent workshops servicing to manufacturer specs maintain ACL consumer-guarantee coverage.
Fleet contracts often standardise on a single interval (typically the most common 15,000 km / 12 months) across all vehicles regardless of manufacturer, with the workshop billing the capped price for each. The calculator gives you the manufacturer-spec interval — your contract may differ. Workshops running fleet contracts should track both: the manufacturer-spec interval (for warranty protection) and the contract interval (for billing).
Sources & methodology
This calculator takes your manufacturer's recommended service interval (kilometres and months) and applies it to your last-service KM and date. The next service is due at whichever trigger comes first: KM at last service + interval KM, or date of last service + interval months. Intervals shown are the standard fixed-interval figures for current AU passenger and SUV models (FY 2025-26); condition-based systems (BMW CBS, Mercedes-Benz Assyst Plus, Audi long-life) calculate the actual interval dynamically, so defer to your dashboard alert. Everything is computed in your browser — nothing you enter is stored or sent to a server.
Authoritative sources
Reviewed by Bishal Shrestha — Founder of OneBookPlus, 10+ years building tools with Australian tax-agent and BAS-agent practices. Last reviewed and updated: May 2026.
Disclaimer: This tool provides estimates only and is not professional advice. For decisions that affect your tax, finances, or compliance position, consult a registered professional.
OneBookPlus handles invoicing, GST tracking, BAS prep, and ATO lodgement automatically.
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