Regular vehicle maintenance is not a “luxury” — it’s a real way to save money and improve safety. Most serious breakdowns start with small issues that are easy to notice and fix early on.
Below you’ll find the key wear-and-tear components of a car — when they should be replaced and how you can check them yourself.
🔧 Engine Oil Change – The Most Important Service Task
How often should you change the oil?
- every 10–15 thousand km or once a year – under normal use
- every 8–10 thousand km – for city driving, short trips, or intensive use
- never rely on maximum intervals like 25–30 thousand km – this accelerates engine wear
Why is it so important?
Oil lubricates, cools, and cleans the engine.
Used oil loses its properties and turns into sludge that damages the power unit.
How to check the oil level?
- Park the car on a level surface.
- Wait 5 minutes after turning off the engine.
- Remove the dipstick, wipe it, insert it again, and check the level.
- The oil should be between MIN and MAX – never below halfway.
In some newer car models, there is no traditional dipstick anymore.
The measurement is done electronically via the onboard computer.
To check the oil level:
- Turn on the ignition (without starting the engine) or start the engine — according to the vehicle manual.
- Enter the car menu → “Service” / “Vehicle” / “Oil level” (name depends on the brand).
- Read the message on the screen — the system will show whether the level is correct or needs topping up.
In such cars, do not add oil “by eye” — always follow the system indication, because too much oil can be just as harmful as too little.
🔧 Engine Oil Change – How to Do It Yourself?
✅ What you will need:
- new oil (meeting the manufacturer’s specification),
- oil filter,
- oil filter wrench,
- drain plug wrench,
- container for used oil (min. 6–7 L),
- funnel,
- gloves and cloths.
🔧 Step by step:
- Warm up the engine for 3–5 minutes (the oil will become thinner).
- Turn off the car and place it on a level surface.
- Unscrew the oil filler cap under the hood.
- Go under the car and unscrew the drain plug in the oil pan.
- Wait until all the oil drains out (about 10–15 minutes).
- Unscrew the old oil filter.
- Lubricate the seal of the new filter with fresh oil and screw it in by hand.
- Tighten the drain plug (with care!).
- Pour in the new oil using a funnel.
- Start the engine for 30 seconds and check the oil level.
Note: Take the used oil to a recycling center or workshop — it must never be poured away.
🌬️ Air Filter – A Small Part With a Big Impact
Replacement: every 15–20 thousand km (more often in city or dusty conditions).
Symptoms of wear:
- the car loses power,
- fuel consumption increases,
- the engine “struggles” when accelerating.
A dirty filter restricts airflow, making the engine work as if it were “choked.”
🔧 How to replace it:
- Open the hood.
- Locate the filter housing (a plastic box near the engine).
- Unclip the latches or unscrew the bolts.
- Remove the old filter.
- Insert the new one in the exact same position.
- Close the housing.
The whole process takes 5 minutes, and the engine immediately “breathes” better.
⛽ Fuel Filter – Often Overlooked but Very Important
Replacement:
- petrol engines: every 40–60 thousand km
- diesel engines: even every 20–30 thousand km
Why?
It protects the injection system from contaminants.
Neglecting it can result in very expensive repairs of injectors or the fuel pump.
⛽ Replacing the Fuel Filter Yourself (Carefully)
⚠️ Important:
You are working with fuel — keep everything clean and never do this on a hot engine.
🔧 Step by step:
- Locate the filter (under the hood or underneath the car near the tank).
- Disconnect the fuel lines (some use quick connectors).
- Remove the old filter.
- Install the new one according to the flow direction (arrow!).
- Reconnect the lines.
- Turn the ignition on several times without starting the engine to prime the system.
⚙️ Timing Belt – A Component You Must Never Ignore
This is one of the most expensive failures if it breaks.
Replacement usually every:
- 60–100 thousand km, or
- 5–6 years (even if mileage is low)
Why does time matter too?
Rubber ages and deteriorates — even a rarely used car still needs replacement.
A broken timing belt often means a complete engine rebuild.
⚙️ When Is It Better to Leave Timing Belt Replacement to a Workshop?
You can replace it yourself only if you have mechanical experience.
Why is it difficult?
- the engine must be set precisely to timing marks,
- special locking tools are required,
- a mistake = engine damage.
👉 If you haven’t done it before, this is not a part to learn on your own car.
🛑 How to Check Brake Condition Without Visiting a Workshop?
Brakes are a safety component — they should be checked regularly.
Pay attention while driving:
- squealing when braking,
- steering wheel vibration,
- the car pulls to one side,
- longer braking distance.
Visual inspection (e.g., during a wheel change):
- discs should not have deep ridges,
- pads must not be thinner than about 3 mm.
Brake system inspection: at least once a year.
🛑 How to Check Brakes Yourself?
You don’t need to remove anything — a basic inspection is enough.
🔧 Visual check:
- Turn the wheels fully to one side.
- Shine a flashlight at the brake disc.
- Check:
- that the disc has no deep lip,
- that the pad still has lining (min. 3 mm).
🚗 Shock Absorbers and Suspension – Responsible for Vehicle Stability
Worn suspension is often ignored because it wears gradually.
Symptoms of worn shock absorbers:
- the car “floats” over bumps,
- heavy nose-diving during braking,
- knocking sounds over potholes,
- worse grip in corners.
Inspection:
- thorough check every 20–30 thousand km,
- it’s worth inspecting the suspension after every winter.
Worn shock absorbers can increase braking distance by several meters.
🚗 How to Check Shock Absorbers Yourself?
The “bounce test”:
- Press down firmly on the front of the car.
- Release.
The car should return and stop immediately.
If it bounces several times → the shock absorbers are worn.
📅 Simple Service Schedule for Drivers
| Task | How Often |
|---|---|
| Oil + oil filter | 10–15k km / 1 year |
| Air filter | 15–20k km |
| Fuel filter | 20–60k km (depending on engine) |
| Brake inspection | once a year |
| Suspension check | every 20–30k km |
| Timing belt replacement | 60–100k km or 5–6 years |
✔️ Why Regular Maintenance Pays Off
Regular servicing:
- reduces the risk of sudden breakdowns on the road,
- lowers operating costs,
- increases safety,
- raises the car’s resale value,
- helps avoid repairs costing thousands.
The cheapest repair is the one done early.
