How to Maintain a Car You Don't Drive Often in Sri Lanka

How do you look after a car you don't drive often in Sri Lanka?

Start the engine and move the car at least once every one to two weeks, keep the battery topped up, keep the tyres at the correct pressure, and don't let the tank run low. In Sri Lanka's heat and humidity, an idle car deteriorates faster than in cooler, drier countries, so the gap between "parked for a while" and "needs a battery, tyres and a clean-out of the fuel system" is shorter than most owners expect.

This matters whether the car belongs to someone who moved abroad and left it at a relative's house, a second vehicle that only comes out on weekends, or a vehicle kept at a village home in a district like Kurunegala or Anuradhapura while the owner lives in Colombo.

Key facts

• Start and ideally drive the car for 15-30 minutes every 1-2 weeks to recharge the battery and circulate oil.
• A car battery can go flat in as little as 2-4 weeks of complete inactivity, especially with an alarm or tracker drawing power.
• Tyres can develop flat spots or sidewall cracks if left in one position for weeks, particularly in direct sun.
• A Notice of Non-User (Form CMT 107) lets you pause the revenue licence if the vehicle is genuinely off the road; fees run from about Rs. 100-500 depending on vehicle class and period, as of November 2026 (source: np.gov.lk).
• You cannot renew a revenue licence online without active third-party insurance and a valid emission test, so both need to stay current if you intend to drive the car again soon.
• Rust and mould move faster in coastal and wet-zone districts (Colombo, Galle, Gampaha) and during the monsoon than in the dry zone.
• A nearly full fuel tank reduces condensation and moisture build-up inside the tank compared to a near-empty one.

Why does a parked car deteriorate faster in Sri Lanka than elsewhere?

Heat, humidity and dust are the main reasons. High ambient temperatures speed up battery self-discharge, humidity encourages rust on brake discs, exposed metal and the underbody, and dust and pollen settle into seals and door rubbers and start to harden them. If the car is parked outdoors or under a carport near the coast, salt-laden air adds to the corrosion risk. None of this happens overnight, but over two or three months of total neglect it adds up to real repair costs.

How often should you start or drive a car that's sitting idle?

Start it and, if possible, drive it for 15-30 minutes every one to two weeks. A short drive is better than idling in place, because it gets the engine, gearbox and brakes up to proper working temperature and moves the tyres to a new contact patch. If you genuinely cannot drive it (no one is there, or it's at a house you only visit occasionally), ask someone nearby to start it and run it for 15-20 minutes with the air conditioning on, and to check the tyres and handbrake while they're at it.

How do you stop the battery from dying?

A battery left unused slowly self-discharges, and a factory alarm, tracker or dash cam that stays wired in will drain it faster. Two practical options:

• Start and run the car regularly, as above, for long enough to actually recharge the battery (a very short start-and-stop does little).
• If the car will sit for more than a month, disconnect the negative battery terminal, or fit a trickle charger/battery maintainer if you have a reliable power source where it's parked.

Avoid jump-starting repeatedly and driving off immediately; that's hard on a weak battery and on the alternator.

How do you stop the tyres from flat-spotting or cracking?

Check and set tyre pressure to the manufacturer's recommended figure (on the sticker inside the driver's door or in the manual) before leaving the car idle, since tyres lose pressure slowly even when parked. Every few weeks, roll the car a little so the weight isn't on the exact same spot of rubber for months. If you can park it under cover, do that; direct sun ages sidewalls and can cause visible cracking faster than normal use would.

Should you leave the handbrake on?

For a few days, it's fine. For weeks or months, especially in humid areas, leaving the handbrake engaged can let the rear brakes seize onto the drum or disc. For long-term parking, leave a manual car in gear on level ground, or use wheel chocks, and release the handbrake. If you're unsure about the handstand or slope of where it's parked, ask a mechanic for the safest way to leave that specific car.

What happens to the fuel if the car sits for months?

Fuel left in a near-empty tank for a long time can let more moisture condense inside the tank, which is worse for the fuel system than a fuller tank. If you know the car won't move for several months, try to leave the tank reasonably full rather than nearly empty, and plan to drive it normally again within a few months rather than leaving fuel to sit indefinitely.

Do you still need a valid revenue licence and insurance if the car isn't moving?

If the vehicle is parked anywhere it could be driven on a public road, including your own gateway in many practical enforcement situations, the safe assumption is that you still need a current revenue licence, which in turn requires valid third-party insurance and a valid emission test certificate to renew online. If the car will genuinely be off the road for an extended period, ask at your Divisional Secretariat or Provincial RMV office about a Notice of Non-User (Form CMT 107), which lets you pause the revenue licence requirement; fees are modest (roughly Rs. 100-500 depending on vehicle class and the period chosen, as of November 2026) and it can be renewed for up to two years continuously, according to np.gov.lk. Don't assume insurance is optional just because the car hasn't moved — check with your insurer about what cover you need while it's parked, since terms vary by insurer.

What else rots or seizes when a car sits unused?

• Rubber seals and hoses can dry out and crack, leading to water leaks or vacuum leaks when you start driving again.
• Brake discs and rotors can develop a thin layer of surface rust, which usually wears off after a few kilometres of normal braking but can affect braking slightly at first.
• Engine oil settles and loses some of its protective film on internal parts; an oil and filter change is a good idea before heavy use resumes if the car has sat for several months.
• Air conditioning can lose a little refrigerant and the compressor seals can dry out if the AC is never run; running it for a few minutes during your regular start-up helps.
• Rodents sometimes nest in the engine bay or chew wiring in a vehicle that sits untouched for long periods, which is more common in semi-rural areas; a quick look under the bonnet now and then catches this early.

Common mistakes people make with a parked car

• Leaving the handbrake on for months and finding the rear brakes have seized.
• Letting the revenue licence and insurance lapse without applying for a Notice of Non-User, then getting fined or struggling to renew later.
• Starting the engine for only a minute or two, which doesn't actually recharge the battery.
• Leaving the tank nearly empty for months.
• Forgetting to check tyre pressure, then finding a tyre has gone flat or developed a crack by the time the car is needed again.
• Assuming a car that "just sat there" needs no inspection before it's driven on the highway again.

Checklist: looking after a car you don't drive often

• [ ] Start the car and ideally drive it for 15-30 minutes every 1-2 weeks.
• [ ] Check and correct tyre pressure monthly; roll the car forward or back occasionally.
• [ ] Decide between regular starts or disconnecting the battery/using a maintainer.
• [ ] Release the handbrake for long-term parking; use gear or wheel chocks instead.
• [ ] Keep the fuel tank reasonably full rather than near-empty.
• [ ] Confirm the revenue licence and insurance are current, or apply for a Notice of Non-User if it's genuinely off the road.
• [ ] Park under cover where possible, especially in coastal or wet-zone districts.
• [ ] Before using it again after a long gap, check oil, coolant, brakes and tyres, or get a mechanic to look it over.

If keeping an idle car going is costing more in upkeep, insurance and licence fees than it's worth to you, it may make more sense to sell it. Check what similar vehicles are going for with price check, browse current listings on /vehicles, and list your car on /post-ad when you're ready. If you're weighing whether to keep it or replace it with something newer on a lease, the leasing calculator can show what a monthly payment would look like. Before any handover, read through our safety tips for meeting buyers safely. And if you've got a specific question about your situation, Sri Lankan car owners and mechanics are active on the Wahanaya forum — it's a good place to ask before you decide.

Sources

• Non User Licence - np.gov.lk
• Laying up and maintaining your car - The AA
• How Long Can a Car Sit Without Being Driven? - AutoZone