There is a sticker on your windscreen that says 3,000 miles. It is wrong, it has been wrong for about two decades, and the shop that printed it makes money every time you believe it.
Meanwhile the one job that can actually write off your engine is not on any upsell board, because it takes a day rather than twenty minutes.
What follows is a realistic schedule: what needs doing, at what mileage, what the time based rules are when you barely drive, which items are genuinely optional, and why the paperwork is worth almost as much as the work.
The Real Schedule Is in Your Glovebox
Every interval below is a generalisation across a huge range of vehicles. The specific numbers for your car are in the owner's manual, and where the manual disagrees with this article, the manual wins.
Two things people miss when they open it:
There are usually two schedules, normal and severe. Most manufacturers publish both. Most drivers assume they are on the normal one. Most drivers are wrong.
Severe service is not aggressive driving. It is:
- Mostly short trips, roughly under ten miles
- Extended stop-start traffic
- Very hot or very cold climates
- Dusty, sandy, gritty or heavily salted roads
- Towing, roof loads or carrying heavy weight
- Long periods of idling
Short trips are the one that catches everybody. An engine that never reaches full operating temperature never boils off the water and unburnt fuel that condense into the oil, so the oil degrades on time rather than on distance. A car that does a two mile school run twice a day is working harder, in lubrication terms, than one doing motorway miles.
If two or more of those describe your week, use the severe column.
The Schedule by Mileage
| Interval | What it covers |
|---|---|
| Every fill, or monthly | Tyre pressures including the spare, oil level, coolant level, washer fluid, a walk round the lights |
| 5,000 to 8,000 miles | Tyre rotation, visual brake check, top up fluids |
| 7,500 to 10,000 miles, or 12 months | Engine oil and filter on full synthetic to spec. Severe service, shorten it |
| 15,000 to 30,000 miles | Engine air filter, cabin air filter (or annually, sooner in dusty or pollen heavy areas) |
| Every 2 years, any mileage | Brake fluid. This is a time rule, not a mileage rule |
| 30,000 to 60,000 miles | Brake pads typically, spark plugs on copper, transmission fluid on a severe schedule, differential and transfer case fluid where fitted |
| 60,000 to 100,000 miles | Spark plugs on platinum or iridium, transmission fluid, coolant on long life formulations, serpentine and accessory belts, suspension and bushing inspection |
| 60,000 to 100,000 miles, or 5 to 10 years | **Timing belt, if your engine has one.** Water pump and tensioner at the same time |
| 100,000 miles and beyond | Second coolant change, oxygen sensors where they affect economy, shorter inspection cycles on suspension, exhaust and hoses |
Consumables that ignore the odometer entirely:
- Wiper blades: 6 to 12 months, sooner if they smear or chatter
- 12 volt battery: typically 3 to 5 years, less in hot climates. Test it before the first cold snap rather than after
- Tyres: replace on tread depth at the legal minimum, but also on age. Rubber hardens and cracks, and six to ten years is the usual advice regardless of how much tread is left
- Brake fluid: two years, as above, because it is hygroscopic
The Four Items Worth Understanding, Not Just Scheduling
Timing belt: the one that writes off engines
Some engines drive the camshaft with a rubber toothed belt, some with a metal chain. A chain is usually designed to last the life of the engine. A belt is a wear item with a hard expiry date in both miles and years.
On an interference engine, which is most modern engines, the valves and pistons occupy the same space at different moments. If the belt snaps, that timing is lost instantly and the valves meet the pistons. The result is bent valves, often damaged pistons and heads, and a repair bill that on an older car exceeds what the car is worth.
Two practical points. First, find out today whether yours is a belt or a chain. Second, if it is a belt, the water pump and tensioner are usually driven by the same belt and are replaced at the same time, because the labour is already paid for and a failed pump a year later destroys the new belt anyway.
Brake fluid: the invisible one
Brake fluid absorbs moisture from the atmosphere through the system's seals and hoses. Water in the fluid lowers its boiling point, and fluid that boils turns to vapour, which compresses. That is the long soft pedal on a mountain descent or after repeated hard stops.
It happens on a calendar rather than an odometer, so the low mileage driver is not exempt. Two years is the common interval and it is cheap work.
Oil: why 3,000 miles is obsolete
The 3,000 mile figure comes from conventional oil in older, dirtier engines with far less precise fuel metering. Full synthetic oils resist oxidation and thermal breakdown dramatically better, filtration improved, and modern engines put much less unburnt fuel into the sump.
Trust the manual, and trust the oil life monitor if your car has one. Those monitors are not simple mileage counters. They model trip length, engine temperature, load and revolutions to estimate actual oil degradation, which is exactly the variable that matters.
The rule that survives all of this: **at least once a year**, even at very low mileage, because oxidation and moisture contamination do not care whether the car moved.
Transmission fluid and the "lifetime fill" claim
Several manufacturers describe the automatic transmission fluid as filled for life. Read that as filled for the life of the warranty. Fluid degrades with heat, and an automatic gearbox generates a lot of it, particularly in stop-start traffic or when towing.
Many independent specialists suggest a change somewhere between 60,000 and 100,000 miles on a sealed unit. One caution worth knowing: on a very high mileage transmission that has never been serviced, opinions genuinely differ on whether a late change helps or exposes existing wear. That is a conversation with a transmission specialist, not a decision to make from a table.
Electric and Hybrid: What Changes
An EV removes a large fraction of this list. There is no oil to change, no spark plugs, no timing belt, no exhaust, no fuel filter.
What remains matters more than people expect:
- Tyres. EVs are heavy and deliver torque instantly, so tyres wear faster. Rotation intervals become more important, not less
- Brake fluid. Still hygroscopic, still on a two year clock
- Brakes, from the opposite problem. Regenerative braking means the friction brakes are barely used, and calipers that never work can seize or corrode. Some manufacturers specify periodic caliper service for exactly this reason
- Cabin air filter. Unchanged
- Coolant. Not for an engine, but the battery and power electronics thermal loops have their own, with their own intervals
- 12 volt battery. Yes, still there, and still a common cause of an EV that will not wake up
- Reduction gear oil. Long interval or lifetime depending on the model, but it exists
Hybrids get the worst of both: a full combustion service schedule plus the EV specific items, and the same regenerative brake underuse problem.
The Records Are Worth Money
Two identical cars, same year, same mileage, same condition. One arrives with a folder of receipts showing every service in sequence with odometer readings. The other arrives with a verbal assurance that it has been well looked after.
They do not sell for the same price and they do not sell in the same amount of time. The folder is the only evidence a buyer has that the timing belt was actually done at 70,000 miles, and on a car where that belt is due, its absence is priced in as if the job still needs doing.
The same record has three other uses most people never think about:
- Warranty and recall claims frequently require proof that scheduled maintenance was performed on time
- Diagnosing an intermittent fault gets dramatically easier when you can see that the misfire started 400 miles after the last plug change
- Knowing your true cost per mile, which is the number that tells you whether to keep repairing this car or replace it. Most people guess and most people guess low, in the same way they guess low on subscriptions. If you want the budgeting frame for it, the zero-based budgeting guide covers treating running costs as a category rather than a surprise, and an unexpected repair is precisely what an emergency fund exists to absorb
The catch is that receipts fade, glove boxes get cleared out, and the shop that did the work in 2022 has closed.
Where an App Helps, and Where It Does Not
Everything above depends on one thing: knowing what was actually done and at what odometer reading. A schedule you cannot check against real history is a schedule you are guessing at.
Autoteca exists for that record. It logs services from 17 ready types plus your own, fuel and charging in gallons, litres or kWh with economy worked out, odometer readings kept consistent across every entry, and receipt photos attached to the record they belong to. You photograph a receipt and it reads the date and total on device, presented as suggestions you confirm rather than facts written behind your back. Reminders are set by distance, by date or both, and it uses your real odometer history to work out when a service is genuinely due instead of counting down a fixed interval that ignores how much you actually drive. Full service history exports as a PDF, which is the document a used car buyer asks for.
The honest limits:
- It is a log, not a mechanic. It records what you tell it. It does not inspect your brake pads and it cannot tell you your belt is cracking
- Receipt scanning reads the date and total. It is not going to itemise a complex invoice, and you confirm everything
- Your intervals still come from the manual. No app knows whether your specific engine runs a belt or a chain
- Fuel economy figures are only as good as your fills. A partial fill logged as a full one distorts the number until the next few entries average it out
What it does do is make the record survive. A logged history that is 95 percent complete beats a shoebox of faded receipts and a memory of "I think that was done".
The Short Version
- The manual beats this article, and most manuals contain two schedules. Check which one you are on
- Severe service is short trips and stop-start traffic, not hard driving, and most people qualify
- Oil on full synthetic is typically 7,500 to 10,000 miles, and at least once a year regardless of distance
- Brake fluid every two years on a calendar, because it absorbs moisture whether you drive or not
- Find out whether your engine has a timing belt or a chain. If it is a belt, it is the most expensive thing you can skip
- Replace the water pump and tensioner with the belt, because the labour is already paid for
- Treat "lifetime" transmission fluid as lifetime of the warranty
- Tyres age out at roughly six to ten years even with tread left, and batteries at three to five
- EVs still need tyres, brake fluid, caliper attention, cabin filters and a 12 volt battery
- Keep the records with odometer readings. They are worth real money at resale and they are the only way to know your true cost per mile