OdologCar Maintenance Schedule: What to Check and When
Most expensive car repairs start as cheap maintenance that got skipped. A worn timing belt is a few hundred to replace and a few thousand if it snaps. Old brake fluid is a quick flush, until it corrodes the brake lines. The fix is simply knowing what's due and when.
Below is a practical schedule you can use for almost any car. The ranges are typical; your owner's manual has the exact numbers for your engine, so use those where they differ.
Every month (or every other fill-up)
Five minutes in the car park catches most problems before they grow:
- Tire pressures, including the spare if you have one. Use the figures on the sticker in the driver's door frame, measured when the tires are cold.
- Tire tread and sidewalls: look for uneven wear, bulges, cuts or nails.
- Engine oil level on the dipstick or dashboard menu.
- Coolant and washer fluid levels, checked with the engine cold.
- All lights: headlights, brake lights, indicators, number plate light.
The schedule at a glance
| Item | Typical interval | Notes |
|---|---|---|
| Engine oil and filter | 5,000–10,000 mi (8,000–16,000 km) or 6–12 months | Sooner for severe use. See oil change intervals |
| Tire rotation | 5,000–8,000 mi (8,000–13,000 km) | Often done with each oil change |
| Wheel alignment check | Yearly, or after hitting a big pothole | Uneven tire wear is the giveaway |
| Engine air filter | 15,000–30,000 mi (24,000–48,000 km) | Inspect at oil changes; sooner on dusty roads |
| Cabin air filter | Every 12 months or 12,000–15,000 mi (20,000–25,000 km) | Musty smell or weak airflow means it's overdue |
| Wiper blades | 6–12 months | Replace when they streak or judder |
| Brake pads and discs | Inspect every 12 months | Replace when worn; life varies hugely with driving |
| Brake fluid | Every 2 years | Absorbs moisture over time, whatever the mileage |
| Battery test | Yearly once it's 3 years old | Most last 3–5 years |
| Spark plugs | 30,000 mi (copper) to 60,000–100,000 mi (iridium/platinum) | Petrol engines only |
| Coolant | Often 5–10 years or 100,000+ mi for long-life coolant | Older coolant types much sooner |
| Automatic transmission fluid | Varies widely: 30,000–100,000 mi, some "lifetime" | Check the manual; severe use shortens it |
| Timing belt | Often 60,000–105,000 mi (100,000–170,000 km) or a set number of years | Critical. Chains usually last the engine's life |
Tires
Tires are your only contact with the road, and they're the item most often neglected. Rotating them (moving front to back, and sometimes side to side) evens out wear, especially on front-wheel-drive cars where the fronts wear faster.
The legal minimum tread depth in the UK, EU and most US states is 1.6 mm (2/32 inch), but grip in the wet drops well before that; many experts suggest replacing at 3 mm (4/32 inch). Tires also age: rubber hardens and cracks with time, so many manufacturers recommend replacing tires around 6–10 years old even if the tread looks fine. The manufacture date is the four-digit code on the sidewall (week and year).
Brakes
Brake pad life depends enormously on how and where you drive: city driving and heavy cars wear pads much faster than motorway miles. Have them inspected once a year or at every tire rotation, when the wheels are off anyway. Signs they need attention now:
- A high-pitched squeal when braking (many pads have a wear indicator that makes this sound)
- Grinding, which means metal on metal: stop driving and get it fixed
- A pulsing pedal, or the car pulling to one side
Brake fluid is a separate job and is often forgotten. It absorbs water over time, which lowers its boiling point and corrodes parts inside the system. Most manufacturers say to replace it every two years regardless of mileage.
Filters
The engine air filter keeps dust out of the engine. It's cheap and usually takes minutes to change yourself. The cabin air filter cleans the air you breathe inside the car; a clogged one makes the ventilation weak and smelly and can cause the windows to mist up.
Battery
Car batteries usually last three to five years, less in hot climates. They tend to fail without warning on the first cold morning, so once a battery is three years old, have it tested each year (many parts stores and garages do it for free). Slow cranking, dim lights at idle or a battery warning light are signs it's on its way out.
Timing belt: the one not to skip
If your engine has a timing belt rather than a chain, replacing it on schedule is the single most important maintenance job. On many engines (called interference engines), a snapped belt lets the pistons hit the valves, and the repair can cost more than the car is worth. The interval is given in both miles and years, because rubber ages even if the car isn't driven much. The water pump is often replaced at the same time since it's behind the belt. Your manual, or a garage with your registration, will tell you which type you have.
Severe driving conditions
Manufacturers publish a "severe" schedule with shorter intervals for cars that do lots of short trips, stop-and-go traffic, towing, dusty roads or extreme temperatures. Most city driving counts. If that's you, use the severe column in your manual, particularly for oil, filters and transmission fluid.
Paperwork reminders
Not everything due on a car is mechanical. Put these on the same schedule so they don't sneak up on you:
- Insurance renewal
- Registration, road tax or licence renewal
- Annual inspection or emissions test (MOT in the UK)
- Extended warranty or roadside assistance renewal
Turning the schedule into reminders
A schedule only helps if something tells you when each item is due. Writing dates on a sticker works for one item; it doesn't work for thirteen, each with its own distance and time interval.
In Odolog you add reminders like "tire rotation every 8,000 km" or "brake fluid every 2 years" or "oil every 10,000 km or 12 months". It estimates when each one will fall due from how much you drive, notifies you a week ahead, and when you log the service it schedules the next one automatically. Ready-made reminders for common jobs mean you don't have to type them all in.
Every service you log also adds to your car's history, which pays off when you sell: here's how to keep a service record buyers trust.
