When is my car service due? Find yours in 2 minutes
The dashboard hasn't said a word and nobody remembers the last one. The answer is two numbers, and on a car that barely moves, the one that matters is the date.
6 October 2026
The dashboard hasn’t said anything. Nobody can remember when the last service was. One of you thinks it was spring, the other is sure it was before the summer holiday.
So, when is my car service due? Every page that ranks for that question is a garage that would like to sell you one, and they all give the same generic answer: twelve months or twelve thousand miles. Your car has its own two numbers, and on a car that does short trips, the one that matters is a date nobody is watching.
Here is how to find yours in about two minutes, and keep it found.
When is my car service due? The two-minute answer
You need two things off two pieces of paper, and one sum.
- The last service: date and mileage. On the invoice, the stamped service book, or the sticker a lot of garages put on the windscreen or the door frame.
- Your schedule: miles and months. In the owner’s manual or the maintenance booklet that came with the car. It will say something like “every X miles or Y months, whichever comes first”.
- The sum. Last date plus Y months gives you a date. Last mileage plus X miles gives you a mileage. Whichever you will reach first is when the service is due.
To see real numbers, take Toyota’s own 2025 maintenance guide, which we read on Toyota’s site on 6 October 2026. It recommends scheduled maintenance “every 5,000 miles or six months, whichever comes first”, and spells out both cases: drive 5,000 miles in under six months and you go at 5,000 miles; reach six months under 5,000 and you go at six months. Your car’s numbers may be different. The RAC’s guidance (dated 12 January 2026) puts many cars at 12 months or 12,000 miles. The rule is the same either way.
The mileage tells you when a busy car is due. The calendar tells you when a quiet one is.
Do the sum once, then let Chirpy hold it
Here is the bit that keeps the answer found. In Chirpy, open Car and add a record called “Service”, type Service. Put the date it was done, what it cost, and under Details the vehicle and the odometer reading. In the “Renews / due” box, put the due date you just worked out. Add one more detail line, “Next at”, with the mileage limit.
That date now sits on the household calendar, and everyone in the house is reminded about it: 30 days before, a week before, at eight the evening before, and on the morning. Not just the person who typed it. The one who actually drives the car to work gets the nudge too.
And when somebody asks in the kitchen whether the car is due, open Ask and type “when’s the car service due?”. The assistant reads your Car records and answers with the date and the mileage you saved. Chirpy Basic is free for the whole household, up to six people, no card.
Why the quiet car is the one that goes overdue
Look at the two cars in the diagram. Same schedule. The commuter does about 1,200 miles a month and reaches 5,000 miles around month four, so the miles decide. The second car does 400 a month. It would take over a year to reach 5,000 miles, so the six-month date decides, and it arrives with the odometer barely moved.
That second car is the one people get wrong. It feels like it can’t need a service, because it has hardly been anywhere. The schedule disagrees, which is the whole reason it carries a time limit next to the mileage.
Toyota’s guide says so in plain words: “If you are a low-mileage driver, mark your calendar.” That’s the manufacturer telling you the dashboard is not the whole system.
- The second car. Short trips, weekends, the run to the station.
- The car of somebody who now works from home. Mileage halved, schedule unchanged.
- A parent’s car you look after. Fifteen hundred miles a year and a service book with a gap in it.
What the dashboard can tell you, and who it tells
Plenty of modern cars work it out for you. The RAC notes that cars with on-board computers will let you know when a service is due, and some show an oil-life percentage that counts down with the way you drive. If yours does, believe it, and if it lights up early, go early.
Chirpy can’t read your car’s computer or count its miles; the dashboard does that better than any app on your phone. What the dashboard can’t do is tell anyone who isn’t sitting in the driving seat, so in a house where one person drives the car and another books the garage, the warning goes to the wrong one, and Chirpy’s date goes to both.
That gap between the driver and the booker runs through all of a car’s admin, and our car service reminder app guide follows it into insurance, registration and the inspection, which run on dates alone.
What to write down every time it’s serviced
Toyota’s guide asks owners to keep the date of service, the mileage at the time, and a description of the work done. Those three, plus two more, turn a pile of invoices into an answer.
| Write down | Where it goes in Chirpy’s Car tool | Why |
|---|---|---|
| Date done | Date | Starts the months clock |
| Mileage | Details, Odometer | Starts the miles clock |
| What was done | Notes | Interim or full, and what the garage flagged |
| What it cost | Cost | Adds up to what the car really costs |
| Next due | Renews / due, plus a “Next at” mileage | The date that reminds everyone |
Keep the invoice too. In the US the FTC says you don’t have to use the dealer for maintenance to keep your warranty, and also tells you to keep records of oil changes and other work in case you need to show it was done (its page, read 6 October 2026, is dated April 2024). The paperwork side of that is exactly what keep track of warranties and receipts is about.
After the service, roll it forward
The minute the car comes back is the only time anyone has the invoice in their hand. That is when the next due date gets written, or never.
In Chirpy, add the new Service record from the garage car park: today as the date, the cost, the odometer off the invoice, and the next due date in the box. The old record stays underneath as history, so in three years you have a service log a buyer or a warranty desk can read in one scroll. Over twelve months those costs, the fuel and the insurance answer how much does my car cost a month with your own numbers rather than an average.
If you would rather not type it, Chirpy Plus will read a photo of the invoice and fill the record in when Plus opens. Until then it is five boxes, and the garage car park is a good place to fill them.
Check it before a long drive
A service that falls due in the middle of a holiday is a service that gets done at a garage you have never heard of, at a price you can’t compare. Before any long trip, open Ask and ask when the car is due. If it lands within a few weeks of the drive, book it before you go.
Our road trip checklist with kids puts the car checks a week out for exactly this reason, and the household admin checklist monthly habit is where a glance at the car’s next date fits in with the bills and renewals.