10 Essential Maintenance Tips Every Used Car Owner in South Africa Should Know in 2026
Why Maintenance Matters More When You Buy Used
With over 4,600 used cars currently listed on dbauto.co.za — from budget-friendly Suzuki Swifts at under R100,000 to premium Toyota Land Cruisers pushing R2.4 million — South Africans are spoilt for choice when it comes to buying second-hand. But buying a used car is only half the battle. Keeping it in top shape is where the real savings happen.
Whether you've just picked up a Toyota Hilux (the most popular make on our platform with over 1,067 listings), a Volkswagen Polo, or a Ford Ranger, these 10 maintenance tips will help you protect your investment, avoid costly breakdowns, and get the most out of every rand you spend.
1. Stick to a Service Schedule — No Exceptions
This is the single most important thing you can do for a used car. Many second-hand vehicles arrive with incomplete service histories, which means you may not know exactly when the last oil change, filter replacement, or timing belt service was done. When in doubt, start fresh: get a full service done as soon as you take ownership, and then follow the manufacturer's recommended intervals religiously.
For most petrol engines, that means an oil and filter change every 15,000 km or 12 months — whichever comes first. Diesel engines (common in bakkies like the Ford Ranger and Toyota Hilux) often require more frequent attention, especially if you're doing a lot of short trips or towing.
2. Check Your Tyre Pressure Weekly
South African roads are tough — potholes, gravel roads, and long highway stretches all take a toll on your tyres. Under-inflated tyres wear unevenly, reduce fuel efficiency, and increase your risk of a blowout. Over-inflated tyres reduce grip and make for a harsh ride.
Check your tyre pressure at least once a week, ideally when the tyres are cold (before you've driven more than 3 km). The correct pressure is listed on a sticker inside your driver's door or in your owner's manual — not on the tyre sidewall, which shows the maximum pressure.
3. Don't Ignore Warning Lights
Modern used cars — even those from 2015 and older — are packed with sensors that monitor everything from engine temperature to ABS performance. When a warning light comes on, it's your car telling you something needs attention. Ignoring it rarely makes the problem go away; it usually makes it worse and more expensive.
Common lights to watch for include the check engine light (can indicate anything from a loose fuel cap to a failing catalytic converter), the oil pressure warning (stop driving immediately if this comes on), and the battery light (often signals an alternator issue).
4. Keep Your Coolant Topped Up
South Africa's summer heat — particularly in Gauteng, Limpopo, and the Northern Cape — can push engine temperatures to the limit. A low coolant level is one of the fastest ways to cause serious engine damage. Check your coolant reservoir monthly and top it up with the correct mixture of coolant and distilled water (usually 50/50).
If you notice your temperature gauge creeping into the red, pull over safely and let the engine cool before investigating. Never open a hot radiator cap — the pressurised steam can cause severe burns.
5. Change Your Air Filter Regularly
A clogged air filter restricts airflow to the engine, reducing performance and fuel economy. In dusty South African conditions — think gravel roads in the Karoo or Limpopo — air filters can clog up much faster than the manufacturer's standard recommendation. Check yours every 10,000 km and replace it if it looks grey or dirty. It's one of the cheapest DIY maintenance jobs you can do, often costing less than R200 for the part.
6. Inspect Your Brakes Every Six Months
Brake pads and discs wear down over time, and the rate depends heavily on your driving style and conditions. City driving with frequent stop-start traffic (hello, Johannesburg and Cape Town commuters) wears brakes faster than highway cruising. Listen for squealing or grinding noises when you brake — these are classic signs that your pads are worn and need replacing.
Don't wait until you hear metal-on-metal grinding. By that point, you're likely damaging your brake discs too, turning a R600 pad replacement into a R3,000+ disc-and-pad job.
7. Flush and Replace Your Brake Fluid
Brake fluid is hygroscopic — it absorbs moisture from the air over time. As moisture content increases, the fluid's boiling point drops, which can lead to brake fade under heavy use (like descending a mountain pass). Most manufacturers recommend replacing brake fluid every two years, regardless of mileage. It's a cheap service item that's often overlooked on used cars.
8. Keep Your Battery in Good Shape
South Africa's extreme temperatures — both the scorching summer heat and cold Highveld winters — are hard on car batteries. Most batteries last three to five years. If your car is slow to start, especially on cold mornings, or if your battery is more than three years old, have it tested at a fitment centre. A battery test is usually free and takes five minutes.
Also check the battery terminals for corrosion (a white or blue powdery buildup). Clean them with a mixture of baking soda and water, and apply a thin layer of petroleum jelly to prevent future corrosion.
9. Don't Neglect Your Transmission Fluid
Whether your used car has a manual or automatic gearbox, the transmission fluid plays a critical role in keeping things running smoothly. Automatic transmissions in particular are sensitive to fluid condition — old, degraded fluid can cause slipping, rough shifts, and eventually transmission failure, which is one of the most expensive repairs you can face.
Check your owner's manual for the recommended service interval. Many modern automatics are marketed as "sealed for life," but in practice, a fluid change every 60,000–80,000 km is good insurance, especially on a used car where the history may be unknown.
10. Wash and Wax Your Car — It's Not Just About Looks
South Africa's UV radiation is intense, and coastal areas add salt air into the mix. Regular washing removes road grime, bird droppings, and industrial fallout that can etch into your paintwork. A good wax or paint sealant every three to six months protects the clear coat and helps prevent rust — particularly important on older used cars where the paint may already be thinning.
Don't forget to clean the undercarriage periodically, especially if you drive on gravel roads or near the coast. Mud and salt trapped underneath can accelerate rust on chassis components and brake lines.
Bonus Tip: Build a Relationship With a Trusted Mechanic
Finding a reliable, honest mechanic is worth its weight in gold. Ask friends and family for recommendations, read Google reviews, and don't be afraid to get a second opinion on major repairs. A good mechanic will help you prioritise what needs fixing now versus what can wait, saving you from unnecessary spending.
Ready to Find Your Next Used Car?
With 4,606 active listings across South Africa — including 1,067 Toyotas, 408 Suzukis, 340 Volkswagens, and 265 Fords — dbauto.co.za makes it easy to find a quality used car that fits your budget. Whether you're looking for a reliable city runabout under R200,000 or a capable bakkie for R300,000–R500,000, our platform connects you with verified dealers across the country.
