5 Potential Problems to Watch for as Your Car Gets Older

She’s got a few kilometers on the clock, a couple of stories to tell and maybe a rattle or two you’ve learned to live with.

But even the most faithful older car has parts that are likely to wear out faster with age and mileage.

Fortunately, she’ll usually give you clues before something goes wrong. You just need to know what to look and listen for.

Here’s what to keep an eye (or an ear) on:

1. The battery

Batteries don't last forever, and an older battery can leave you stranded when you least expect it. If you notice any of the following, it may be time to replace it:

• Slow starting – the engine cranks more slowly because the battery may be struggling to deliver enough power.
• Clicking when you turn the key – the starter may not be receiving enough current.
• Dim or flickering lights – headlights or interior lights may fade when the battery is weak.
• Frequent jump starts – needing repeated boosts can mean the battery is no longer holding charge.
• Corrosion on the terminals – white or bluish buildup can block the flow of electricity.
• Swollen battery case – heat or internal damage can make the casing bulge, which means the battery is unsafe and should be replaced.
• Rotten egg smell – a sulphur odor can point to gases leaking from a faulty battery.
• Electrical accessories acting up – radios, power windows or wipers may work inconsistently when battery power is low.
• Battery warning light – points to a problem with the charging system, which may involve the battery, alternator or another charging-system component.

2. The cooling system

Your engine runs hot. The cooling system's job is to keep it within a safe temperature. As a car gets older, components like hoses, the radiator, the thermostat and water pump can wear or fail.

Left unchecked, overheating can cause serious damage. Watch for:

• Temperature gauge climbing – the engine may be running too hot.
• Coolant under the car – green, orange, blue or pink liquid can point to a radiator or hose leak.
• Sweet smell – coolant has a sugary odor, so this can indicate a leak.
• Steam from under the bonnet – a clear sign the engine is overheating, and coolant may be escaping.
• Frequent top-ups – regularly adding coolant can mean there's a leak or the system isn't holding pressure.
• Weak or no heat from the heater – low coolant or a failing thermostat can prevent warm air from reaching the cabin.
• Visible corrosion or rust – deposits around the radiator or water pump can signal wear and potential failure.
• Temperature warning light – indicates the engine is running too hot or coolant is low.

3. The gearbox

Whether you drive a manual or automatic, your gearbox does a lot of work over the years. If gear changes suddenly don't feel as smooth as they used to, don't brush it off, especially if:

• Slipping gears – the car pops out of gear or fails to stay engaged, which is a safety risk.
• Jerking or hesitation – rough gear changes can point to internal wear or fluid issues.
• Delayed acceleration – a lag after pressing the pedal can mean the transmission isn't transferring power properly.
• Whining or grinding noises – unusual sounds while driving or shifting can be early warnings of mechanical trouble.
• Burning smell – overheated transmission fluid or friction inside the gearbox can cause a sharp odor.
• Fluid leaks – red or brown spots on the ground may indicate escaping transmission fluid, which can quickly lead to failure.
• Transmission warning light – alerts you to a fault in the gearbox or transmission system.

4. The suspension

Your suspension helps keep your car stable and helps provide a smoother ride. Years of potholes, speed bumps and everyday driving can take their toll, though, and worn suspension parts can affect both comfort and safety.

Have it checked out if you notice:

• A bumpier ride – worn shocks or struts may no longer absorb bumps effectively.
• Knocking or clunking sounds – loose or damaged components can make noise over uneven surfaces.
• The car pulling to one side – suspension wear or alignment problems can cause the vehicle to drift.
• Uneven tyre wear – suspension problems can make tyres wear faster on one edge.
• Excessive bouncing – continued bouncing after a bump can mean the shocks are worn.
• Loose steering – worn suspension parts can reduce stability and steering precision.
• Suspension warning light – some modern cars use sensors to alert you to suspension problems.

5. The engine

You know what your car normally sounds and feels like, so when something changes, take note. Engine problems can build quietly over time, and repairs are often among the most expensive.

Have these signs checked promptly:

• Unusual knocking or tapping sounds – can indicate worn components or issues with fuel combustion.
• Loss of power – the engine may struggle to accelerate or maintain speed.
• Excessive smoke – blue, white or black smoke can point to oil, coolant or fuel problems.
• Increased oil consumption – topping up more often may point to leaks or internal wear.
• Engine warning light – a dashboard alert that the car's computer has detected a fault.

Don't ignore what your car's telling you

Not every strange sound means something serious. But when you drive an older car, catching a problem early can make a big difference.

Listen to the noises. Watch the warning lights. Pay attention when something feels different.

Even a well-looked-after car can suffer an unexpected mechanical or electrical failure. Motor Warranty from The Unlimited provides cover for certain specified mechanical and electrical components, subject to the terms and conditions..

She's looked after you for all those kilometers.

It pays to look after her too.

Find out more about warranty

Disclaimer: This article is for general information only and does not constitute financial or legal advice. Product benefits, limits, eligibility requirements and terms and conditions apply. The Unlimited Group (Pty) Ltd is an authorised Financial Services Provider (FSP 21473).