Your inspection deadline is really your road tax deadline working backwards, because road tax cannot be renewed without a valid inspection. Miss it and the road tax lapses, which is a far worse morning than anything printed on a fail slip. The irritating part is that most cars fail on things the owner could have found in their own carpark the night before: a dead number plate bulb, a tyre sitting on its wear bars, a headlight aimed at the treetops. The repair is rarely the expensive bit. The second trip is.

The short version

  • Cars aged 3 to 10 years are inspected every two years. Past 10 years it’s annual, and the deadline rides on your road tax renewal
  • The common failures are cheap items: bulbs, tyres, brake balance, headlight aim, and modifications you forgot were modifications
  • An undeclared modification is a straight fail, and putting the original part back before you go usually costs nothing
  • Brake pads typically run $120 to $350 per axle, discs another $200 to $600 per axle, and a diagnostic scan for an engine light commonly $50 to $200
  • Twenty minutes with a torch and a helper the night before catches most of what fails cars

The night before: what to walk round and check

  • Sidelights, dipped beam, high beam, indicators, hazards and fog lamps, looked at rather than trusted to the dashboard icons
  • Brake lights including the high-level one, with a helper holding the pedal
  • Reverse lights, and both number plate bulbs, the item almost everybody misses
  • The plates themselves: correct format, both fitted, not cracked, faded or half hidden behind a tow bar
  • Tread on all four tyres including the inner shoulder, plus sidewalls for cracking and bulges
  • Windscreen for any chip or crack in the driver’s swept view, then wet the glass and run the wipers
  • Every seat belt pulled to full length, tugged sharply to feel the lock, checked along the webbing for fraying
  • Horn, all three mirrors, and which warning lights stay lit after the engine catches
  • Boot emptied, child seat out if it sits over a belt anchor, and any modified part put back to standard

Who gets inspected, and when it’s actually due

A new car is left alone for its first three years. After that, cars aged three to ten years go in every two years. Pass the ten-year mark and it turns into an annual visit. Anyone running a car on a renewed COE stays in that annual group for the rest of the car’s life, which is one more fixed date to weigh up against a renewal.

The deadline is the road tax, not the test. Road tax cannot be renewed without a valid inspection, so the inspection date sits behind the road tax date. Let it slide and the road tax lapses, and driving on lapsed road tax is a far more serious problem than a failed brake reading. You get a window before expiry. Use the front of it rather than the last few days.

Authorised centres are VICOM and STA, and any of them can do the test. There’s a VICOM centre at Kaki Bukit, a few minutes from our unit, which is why we see plenty of cars heading over or coming back irritated.

What the centre checks, in the order they do it

Nothing in the test is arbitrary, even though it feels that way when you fail on something you’ve driven happily for a year. The inspector works a fixed sequence and marks each item.

They start with identification: chassis and engine numbers against the record, plates front and rear. Then lights and signals, every bulb and every function, including headlight aim on the beam tester. Tyres and wheels follow, then the rollers for the brake test, which measures braking force at each wheel and compares one side against the other. After that, suspension and steering, exhaust noise and emissions, then a look underneath at the chassis, mountings and anything leaking. Cabin items last: windscreen, wipers, seat belts, horn, mirrors. Modifications get no stage of their own; the inspector marks a non-standard part at whatever point it turns up.

Two of those cabin items carry real money. A chip or crack in the driver’s swept view is a fail: a small chip is a cheap resin repair; a crack that has run means a new screen, dearer again with a camera or rain sensor behind it. A belt that frays or won’t lock is a replacement assembly, not a repair.

Lights, bulbs and the headlight aim test

Bulbs are the easiest fail on the list to avoid, and they still catch people every week. Headlights on both beams, brake lights including the high-level one, indicators, reverse lights, and the two small number plate lights nobody thinks about until they’re reading a fail slip at the counter. A bulb is one of the cheapest parts in the building, and failing on one costs you a morning.

Headlight aim is the failure owners argue about most. The tester measures where your beam lands and where its cut-off sits, and it has no interest in how bright the road looks from the driver’s seat. Cars fail here for three ordinary reasons: the headlamp unit has been replaced or knocked out of alignment, the car sits lower or higher than standard because of a suspension change, or somebody has retrofitted LED or HID bulbs into a housing built around a halogen filament. That last one is common and it’s a genuine fail, because a halogen reflector scatters an LED chip’s light in directions the design never intended.

If the aim is simply off, it’s usually adjustable and quick. If the bulb type is the problem, the honest fix is refitting the correct bulbs or moving to a projector unit made for LEDs. Shrugging the result off is a poor idea: aim is one of the few items on the list that mostly affects the driver coming the other way.

Tyres: tread depth, age and mismatched pairs

Tyres have a legal minimum tread depth, and the tyre itself shows you where that line sits. Almost every one has wear indicators moulded into the bottom of the grooves, and when the tread sits flush with those little bars you’re at the limit. A tread gauge costs very little and takes the guesswork out of it.

Tread isn’t the only way tyres go wrong. Wear that’s heavy on one shoulder and fine on the other tells the inspector something is off with your alignment or suspension. Cracking in the sidewall is a Singapore speciality, because our heat and UV age rubber whether the car moves or not, so a low-mileage car parked outdoors can pass on tread and be perished on the walls. Two different brands or patterns across the same axle is also a problem.

We won’t quote a tyre price without knowing the size, since the gap between a 15-inch economy tyre and a 19-inch performance one is enormous. What we will tell you is when a tyre has a couple of months left in it and doesn’t need replacing today. Our tyre and battery checks guide covers reading the sidewall, date code included.

Brakes, the roller test and the handbrake

The brake test is the one part of the inspection you cannot talk your way around. The car sits on rollers and each wheel is braked in turn. The machine reads the force at every wheel, and the gap between left and right. Your car can stop perfectly well on the road and still fail here. Your foot quietly compensates for a lazy caliper. The machine doesn’t.

Usual causes: a sticking caliper, one pad worn far further than its partner, glazed pad material, a handbrake out of adjustment. Handbrake efficiency is measured on its own. Older cars with rear drums and a stretched cable often fail on that alone, and that’s an adjustment rather than a parts bill.

Pad thickness typically costs around $120 to $350 an axle to put right, depending on the car and the pad grade, with discs adding roughly $200 to $600 per axle when they’re below minimum thickness or badly scored. Not every pad change needs discs. A fair number of quotes bundle both out of habit, so ask what your discs actually measured before you agree. We’ve set out the signs your pads and rotors are genuinely due separately.

Suspension and steering play

Underneath, the inspector is hunting for movement where there shouldn’t be any: split ball joint boots, worn tie rod ends, tired bushings, and shocks weeping oil. Steering play gets checked with the wheel worked back and forth while somebody watches the joints for slack.

Your version of the same check is simpler. Park somewhere quiet, wind the window down, and turn the wheel slowly with the engine running while you listen for a knock from the front corners. Push down hard on each corner and let go, since a healthy damper settles in one movement rather than carrying on bouncing. Then take a speed hump slowly with the radio off, because suspension noise is obvious when nothing competes with it.

Exhaust, smoke and the emissions test

Two separate things happen here and owners tend to run them together. Noise and leaks are one check, covering a blown gasket, a rusted-through section, or an aftermarket system louder than standard. Emissions are the other: petrol cars get measured at idle for carbon monoxide and hydrocarbons, diesels get a smoke opacity reading under free acceleration.

Emissions failures cause the most confusion, mainly because the fix isn’t obvious from the result. Carbon buildup, a tired oxygen sensor, an ageing catalytic converter, worn spark plugs, or an engine running rich will all push the readings up. If your car lives on short hops between an HDB carpark and the office, it never really gets hot and deposits build faster than they burn off.

Do the free thing first. Take the car out for twenty minutes or so on an expressway at a sustained speed, so everything reaches full temperature and the lighter deposits burn away. Rolling in with a cold engine straight out of a carpark is the worst way to sit it. If the readings are still out after a good run, you need a diagnosis rather than a bottle of additive, and a scan at commonly $50 to $200 tells you which sensor or circuit is at fault before you spend on parts.

Modifications, tint and anything you fitted yourself

Owners worry about this section more than any other, and the worry is aimed at the wrong thing. Modifications aren’t judged on taste or on how well the work was done. The question is narrow: is the part standard, or is it approved and declared on the vehicle record? Anything else is a fail.

The usual culprits are a non-standard exhaust, aftermarket bodykits and spoilers, lowered or coilover suspension, wheels outside the permitted sizing, extra lamps, LED and HID conversions, and film darker than the legal limit. Tint deserves its own warning, because installers are not always straight about what they’re fitting. LTA sets a minimum amount of light that has to pass through the windscreen and front side windows, and the standard is stricter at the front than the rear. If the person who sold you the film couldn’t tell you its light transmission figure, assume you have a problem.

Nearly all of this is fixable for nothing before you go. Original exhaust still in the store room? Refit it. Wrong bulbs in the headlights? The halogens go back in. A bolt-on spoiler is four bolts and ten minutes. An owner who spends a Saturday morning returning the car to standard drives home with a pass. Deal with the same thing after a fail and you’ve paid for it with a whole extra trip.

How to work the twenty minute check

The card near the top of this page is the list. What matters as much is how you go through it: the night before, with a torch and someone to help, as a slow lap of the car rather than a race down a page.

Work front to back and physically look at each lamp rather than trusting the icons on the dashboard, since a warning light will tell you about a blown filament on some cars and stay dark on others. The brake lights need a second person on the pedal, and the high-level one counts. Tread on the inner shoulder you’ll have to reach in and feel rather than see, because that’s where the wear hides on a car doing carpark ramps every day.

Inside, let each belt retract fully before you tug it, since a lock that engages under a sharp pull is the thing being tested. Finish in the driver’s seat with the engine running and read what’s still glowing. Anything lit is worth understanding before an inspector sees it, not after.

What each common failure costs to put right

Prices move with the car, so treat these as the ranges we quote rather than a menu. The more useful point is which pile your slip lands in: most of the list is cheap or free, and the real money sits in brakes and glass.

Fail itemWhat putting it right involvesTypical cost
Blown bulb, plate lights includedReplace the bulbOne of the cheapest parts in the building
Headlight aim outAdjust on the beam setterUsually quick, if housing and bulb type are standard
LED or HID in a halogen housingRefit the correct bulbs, or move to a projector unit made for LEDsNothing, if the original bulbs are still in the store room
Tyre at or below the wear barsReplace, matching the pair across the axleDepends on size: a 15-inch economy tyre and a 19-inch performance one are nowhere near each other
Brake pads below thicknessPads, per axleAround $120 to $350 per axle
Discs scored or under minimumDiscs, per axle, on top of the padsRoughly $200 to $600 per axle
Weak handbrakeAdjustment, typically on older cars with rear drums and a stretched cableAn adjustment rather than a parts bill
Chip in the driver’s swept viewResin repairCheap, while it is still only a chip
Crack that has runNew windscreenDearer again with a camera or rain sensor behind it
Belt that frays or won’t lockReplacement assembly, not a repairQuoted per belt assembly
Emissions out of bandDiagnostic scan first, then whatever the codes point atScan commonly $50 to $200
Undeclared modificationPut the part back to standard before you goUsually nothing

The inspection fee itself is a modest fixed amount, well under $100 for a car. Everything else on this page is the variable, which is why twenty minutes with a torch is the best value item in the whole exercise.

On the day, from the queue to the result

The test is quick once you’re on the ramp. The queue is what eats your morning, and almost everything that goes wrong on the day is a preparation problem rather than a car problem.

  1. Ring ahead, then go earlyCall the centre first if the car is under a company name or you’re going on someone else’s behalf. Otherwise the first hour after opening is usually the calmest part of the day.
  2. Arrive with the car emptyTake the load out of the boot, since weight changes how the car sits and can shift the headlight aim. Child seat out too if it sits over a belt anchor. Bring your identification; you don’t need a folder of paperwork.
  3. The test itselfIdentification and plates, then lights and aim, tyres and wheels, the brake rollers, suspension and steering, exhaust and emissions, the underbody, and cabin items last.
  4. The result, on the spotA pass updates the record and clears the way for road tax. A fail comes with the specific items marked, which is the useful part: you leave knowing exactly what’s wrong.
  5. The re-checkA prompt return after a failure is usually free or reduced, though the terms depend on the centre and on how long you take to come back. Ask at the counter before you drive off.

Our guide on what to do after a failed inspection walks through that last step properly.

What not to spend money on before you go

The inspection tests whether the car is roadworthy today. It doesn’t test whether you’ve been a diligent owner, and nobody opens your service book.

So don’t book a full service just because an inspection is due. If your service isn’t due, it isn’t due, and a “pre-inspection package” that turns out to be an oil change and a filter is something the test never asks about. Don’t replace discs because you’re replacing pads, unless the discs are below minimum or scored. Don’t buy four tyres because one is at the limit, though do match the pair across an axle when you replace.

Leave the aircon alone as well. The inspection has nothing to say about how cold your cabin gets, so a regas booked before the test is money spent on comfort rather than on a pass.

Above all, don’t throw parts at an engine light. Buying an oxygen sensor before anybody has read the fault code is the most reliable way we know of turning a small problem into a large bill. Scan first, then decide. For most cars the fixes that get you through are minor. Our maintenance budget guide for cars on renewed COEs has the wider picture.

When to come and see us

We’re at Autobay @ Kaki Bukit, 30 Kaki Bukit Road 3, #02-61, a few minutes from the VICOM centre there. Bring the car in before you join the queue and we’ll go through the same items the inspector will, on a ramp. If it’s all sound, we’ll say so and send you off. If something needs doing, you get an itemised quote before we start and the old part to look at afterwards.

That work sits under car servicing and brakes and suspension. WhatsApp us your plate and your inspection date and we’ll fit you in before the deadline rather than after it.