How to Inspect a Used Car Before Buying (2026)

A used car looks the same from the road whether it has been meticulously maintained or quietly nursed through three floods. The difference only shows up when someone spends forty-five minutes looking properly, in the right order, with the engine cold.

That is what this guide is: a walkaround. It follows a car from the moment you arrive to the moment you decide, in the physical order you will actually touch it. The order matters more than people expect. Inspect the engine after a seller has already warmed it up and you have thrown away your best chance to spot a head gasket problem. Inspect the paint before you have seen the car sit level on its suspension and you may negotiate against yourself.

This is deliberately not a list of things that can go wrong with a car. That is a different job, and it is one most guides do badly because they mix decision-making with diagnosis. This is the mechanical side: what to look at, where to put your hands, and what a specific finding actually tells you.

If you have not yet decided which car you want, or you are still working out how much to offer, start with how to buy a used car in Pakistan in 2026 first. And if you are still gathering paperwork, the documents you should check is a separate guide that pairs with this one.

What this inspection actually buys you

A proper inspection takes forty-five to sixty minutes and gives you three things, in descending order of value:

Certainty about the structure. Whether the car has been in a serious collision. This is the one finding that should end the conversation on its own, because it is both a safety problem and an unrecoverable cost problem.
Negotiating power. A documented fault is worth far more as a price reduction than as an abstract worry. Minor findings — worn tyres, a tired battery, a brake pad away from done — are ordinary used-car facts and should simply be priced in.
A written record of what you accepted. If you do buy, you know exactly what condition you took delivery of, which matters the moment something goes wrong three weeks later.

There is no such thing as a perfect used car. You are not hunting for one. You are hunting for a car whose real condition matches what the seller is charging for it.

1. Before you leave the house

Bring these. It takes two minutes to gather and saves a wasted trip.

A phone flashlight. You will need it under the car and behind the radiator.
A small magnet. Stick it to each panel. Modern steel body panels hold a magnet; bond filler over a repair will not. This is the cheapest paint-thickness test available.
Paper towel and hand cleaner. The oil dipstick tells you far more when you can actually see what is on it.
A pen and your phone's notes app. Record the odometer reading at the start, not the end.
An OBD scanner. A basic code reader is inexpensive and transforms one section of this guide. If you do not have one, ask a nearby workshop to read it, or use a shop that offers free scans.
Arrive at least fifteen minutes early. Not for the car — for the paperwork, so you are not reading a registration document in a hurry while the seller is waiting.

Two rules before you begin. Never let anyone rush you. A seller who can only spare ten minutes is telling you something important, and the professional advice is consistent: slow down rather than speed up. And if the seller objects to an inspection, that objection is the finding. Walk away and do not negotiate with yourself about it.

2. The first five minutes: identity, before condition

Do not fall in love with a car before you know what it is. Spend the first few minutes on identity, because every minute after this one is wasted if the numbers do not match.

Write down the registration number, the odometer reading, and the engine and chassis numbers as printed.
Look at the chassis number stamped on the car itself, usually on the driver's door frame plate or etched into the body. Compare it character by character with the registration document.
Run the registration number through the official excise verification portal for that province. Punjab, Sindh, KPK and Islamabad all run live Motor Transport Management Information System services; Balochistan's online service is not currently live.
If the car is a Japanese import, get its auction sheet verified independently against the chassis number rather than trusting the printout the seller hands you.

The portals return the registered owner's name, the number of previous owners, the engine and chassis numbers, and the token tax and dues status. All four matter. Our documents guide covers this side in full, including what to do about outstanding e-challans and how the filer and non-filer distinction changes your costs, so this guide will not repeat it.

The single most useful check on this page is free and takes ninety seconds: does the name on the registration document match the person standing in front of you? A mismatch means you are buying a car from someone who does not own it.

3. The exterior walk-around, in daylight

Walk the car once all the way around before you open anything. Go slow, and look at it from a low angle rather than standing up. Two people should swap eyes — the thing you have been staring at for twenty minutes is the thing you have stopped seeing.

Panel gaps. Every gap on the car should be even and parallel, and the gaps on one side should mirror the other. A bonnet that sits proud on one side, or a door gap visibly wider than its neighbour, means panel has been removed or resprayed. Repeat the measurement low down at the boot and compare with the front, diagonally.

Colour, in three kinds of light. Paint fades with sun exposure, so the roof and boot lid are usually the most faded and the door sills and lower panels the least. Look at metallic paint in shadow, where a respray reads as a different flake or a different texture. Check the edges: the lip of the bonnet, the door edges, and the top of the wings are the hardest places to blend and the first place a rushed respray shows.

Overspray on trim. Black speckling on the window rubber, the badge, or the plastic bumper trim means spray paint settled on a surface that was never masked. It is a strong sign the car has been resprayed.

The magnet test. Run the magnet along every panel. It should grip firmly. Where the grip is weak or absent, there is bond filler or glue over a dented, rusted or sanded repair.

Rust, and where it matters. Rust on a bumper or a spare wheel well is cosmetic. Rust on the sills, the lower door edges, the wing bottoms, or the arch lips is structural corrosion, and cars that live near the sea or in humid coastal cities are the ones to be most careful about. Look up underneath the sills and feel along them; surface rust can look like paint from outside while the section behind it has already thinned.

4. Structure: the checks that should end a purchase

If you take one section of this guide seriously, make it this one. Everything else on the list is a negotiation. This section is a decision.

The radiator core support. This is the front structural member directly behind the grille, and it takes the majority of force in a frontal impact. Look at the joins where it meets the wings. Weld lines should be even and factory-looking. Denting, grinding marks, mismatched paint, or a distorted seam means the front of this car has been hit. Check that the bonnet gap at the front is even with the gap at the rear, and that both headlights sit at equal height in their housings.

The pillars. Run a hand down each A, B and C pillar. Paint on a pillar should be flat and continuous with the rest of the body. A pillar that has been cut and welded has visibly different paint thickness, often a slightly different shade, and you will feel a step in the metal. The B-pillar is where jacking and structural repairs often show.

The boot floor. Open the boot and look at the floor pan and the lip where it meets the sides. Factory seam sealer is a regular, slightly textured bead. Pulled-back or smeared sealer, a wrinkle in the metal, or a paint overspray on the boot lip all indicate the rear has been damaged and repaired.

Chassis and jacking points. If the car is available on a ramp or lift, this takes thirty seconds and is worth everything. The sill and the two jacking points should be straight. Compare the two jacking points against each other — if one is visibly lower or dented inward, a side impact has twisted something.

Alignment sanity check. Park on level ground with the wheels straight. All four tyres should sit evenly. A car that visibly leans to one side has either a collapsed spring, a worn bush, or a structural repair.

5. The cold start and the engine bay

This is the most valuable fifteen minutes of the entire inspection, and it is the one most often wasted. Ask to see the car before the seller starts it. If the engine is already running and warm, the single most informative check has been taken away from you. A seller who insists the car is "already warm" for you has told you something.

The oil on the dipstick, before starting. Pull it, wipe it, and pull it again. Fresh oil is amber to dark brown and translucent enough to see light through. Oil that is creamy, milky, beige, or the colour of coffee means coolant is mixing with the oil, which almost always means a failed head gasket or a cracked engine head. That is the end of the inspection. Walk away.
Under the oil filler cap. Peek inside before starting. Thick brown-grey sludge, or a gritty paste, means long intervals between services and internal wear. A light mist of condensation is normal in Pakistan's climate; thick sludge is not.
The coolant reservoir. The level should be between the minimum and maximum marks and the fluid should be clear, clean and pink, green or blue. Rust-coloured or cloudy coolant with a film at the top is a cooling system that has not been maintained. Low coolant with no visible leak means it has been topped up repeatedly — which is what a head gasket failure looks like before it fails completely.
Radiator and intercooler. Look into the front of the radiator. Oil film, oily sludge streaks or foam sitting in the expansion tank all indicate coolant mixing with oil.
Hoses, belts and clamps. Squeeze the upper radiator hose. It should be firm, not soft. A hose that stays soft when the engine is warm is on its way out. Run a finger along the belt edges — glazing, fraying or a ribbed, shiny surface all mean replace it. Belts are cheap; the failure mode is a car stranded on the road.
The battery. Look at the terminals for blue-green corrosion. Lift the negative clamp and look at the metal underneath; heavy white or blue-green corrosion under the clamp means the battery has been weeping acid and the terminal needs cleaning or replacing. Check the date sticker if there is one.
Wet spots on the block or pan. Before you start it, note any fresh fluid on the ground where it has been parked. After you start it, you will be looking for fresh drips rather than old stains, which is a much harder read.
Engine mounts. Rock the engine gently with one hand on the intake pipe. Excessive movement means worn mounts, and on many Pakistani models a broken mount eventually disturbs the geometry enough to cause other failures.
CNG or RNG conversion, if fitted. For a converted dual-fuel car, check that the cylinders are properly shielded, that the valve is in good order, and that the cylinder has been hydrostatically tested within date. Ask for the test certificate. An unshielded or badly installed cylinder is genuinely dangerous, and this is not a place to be casual.

Now start it. Listen before you look. A healthy cold start is a brief cranking pause, a quick catch, and then an idle that settles to a steady, even note within a minute. Anything else is telling you something. A slow crank suggests a weak battery or tired starter. A catch that hesitates and then fires suggests fuel or compression issues. An idle that hunts up and down never settling to a steady note, or that revs in bursts without throttle input, points to injectors, idle control or vacuum leaks. And any knocking, ticking or metallic rattle that changes with revs is a red flag you should not rationalise.

6. Exhaust smoke, decoded

Watch the exhaust during the cold start and again once fully warm. Steam is not smoke — a plume of white vapour on a cold morning that clears within a minute or two is condensation and entirely normal. What matters is smoke that persists.

White smoke that persists once the engine is at full temperature is coolant being burned in the cylinder head. Combined with milky oil, this is a head gasket problem. Walk away.
Blue or oily grey smoke is engine oil burning in the combustion chamber. On start-up it can mean worn valve stem seals, which is common and sometimes tolerable. But blue smoke that continues at idle or under load means worn piston rings or cylinder scoring — that is an engine rebuild, and on most cars it ends the deal.
Thick black smoke is an over-rich mixture: a blocked air filter, a dirty mass airflow sensor, or injectors dumping fuel. It is usually repairable, but it means the engine has been run poorly.

7. Wheels, tyres and brakes

Tyres. Tread depth is easy to judge and easy to oversell. Look at all four and compare them to each other — this is the actual test. Uneven wear across the width of a single tyre points to alignment or a worn suspension component. Feathering, where the tread blocks look like shark fins across the circumference, is a toe-in or toe-out alignment fault. Bunched, irregular wear across the circumference points to a worn shock absorber or a buckled wheel. Pressure wear on the outer shoulders is underinflation, and it is more common than sellers admit. Also confirm all four are the same size and roughly the same brand; a single odd tyre is a shortcut someone took, and it changes how the car handles wet.

Check for cuts, bulges and cracking in the sidewalls, and check the spare is present and inflated. Ask for the jack and wheel wrench and confirm they work.

Brakes. Look through the wheel spokes at the disc. A lipped or heavily rusted outer edge means the pads have been worn for a long time without being replaced — the caliper is probably dragging. On a rear-wheel-drive car the front discs wear much faster than the rears, so wear on all four is worth asking about. On the test drive, the pedal should feel firm and the car should pull to a stop in a straight line. A pedal that sinks toward the floor, or a car that pulls to one side under braking, is not a car to buy.

Do not try to judge remaining brake pad life by looking. You cannot see the pads through the spokes, and nobody can.

8. Suspension, by the bounce test

Push firmly down on one corner of the car and release. Repeat on all four. The body should rebound and settle within one or two bounces. Listen while you do it.

Creaking, groaning or clunking means worn bushes, worn anti-roll bar links, or damaged shock mounts. A car that keeps bouncing after two or three rebounds has collapsed or failed shocks. Compare the four corners — if one settles differently from the others, that corner needs attention. Note it and price it, but remember that no mechanical inspection on a rough road substitutes for driving over real speed breakers and broken tarmac, which is where Pakistani suspension problems make themselves obvious.

9. Inside the cabin

Open the driver's door and pause before getting in. Smell it.

A musty, damp or sour smell the moment you open the door is the single most reliable indicator of water ingress. Go and lift the passenger-side floor mat and check underneath for dampness or silt. Look up at the headliner for staining, sagging or discoloration — all signs water has come in through the roof or been through the windows. Check the bottoms of the doors for damp carpet. A car that has been flooded will almost always tell you here, in smell, even when the paint and the engine bay are perfectly clean.

Then work through the rest:

The warning lights, before you start the engine. Turn the ignition to on without starting. Every warning lamp should illuminate briefly as the system checks itself. A lamp that never comes on has been disabled or removed, and that is a serious problem on its own.
Seat belts. Every belt should retract fully and latch. Check the anchor points are tight in the pillar, not just the webbing.
Seats. Every adjuster should move and then hold. Heavily worn, sagging or mismatched seat bolsters suggest high mileage or a repaired seat.
Windows, sunroof and central locking. Operate every one. A dead window motor is cheap; a failed central locking system is a security problem.
All lights and indicators. Headlights and high beams, fog lights, hazard lights, brake lights including the high-mounted one, reverse lights, and all four indicators. Front and rear.
The odometer. Note the reading exactly. Check that it does not jump backward when you turn the ignition on and off a few times, which can indicate a roll-back.
Air conditioning. Turn it on. It should blow cold within about a minute. Weak or warm output can be a refrigerant leak, which on older cars is an ongoing cost.

10. The test drive that actually finds problems

Plan for fifteen to twenty minutes and insist on driving it yourself. Most sellers drive, and the car always feels better from the passenger seat because you cannot feel what is happening underneath.

Start cold and drive in stages. The first ten minutes at low speed exposes cold-start and idle faults that vanish once warm. Take it over genuine broken tarmac, potholes and speed breakers deliberately — this is the only reliable way to hear the suspension and the wheel bearings. Then get it up to speed on a road where you can legally and safely do so, to expose anything that only appears at higher engine speed or higher revs.

Listen for: wind noise and whistle from window seals, a humming sound from a wheel bearing that rises with speed, a droning from the drivetrain, and any rattle under acceleration that suggests an exhaust hanger has dropped.

Watch for: the temperature gauge climbing and staying above normal, a check engine light appearing, the revs dropping on acceleration, hesitations or jerks, and a steering wheel that pulls to one side.

Test the brakes: moderate pressure on an empty stretch of straight road. The pedal should stay firm, the car should track straight, and there should be no vibration through the pedal, which would mean warped discs.

Automatic transmission: all three or four gears should engage smoothly with no slip or delay, and no jerk when shifting up or down. If the car has a transmission dipstick, pull it warm and running. Fluid that smells burnt, or has metal grit in it, means the gearbox is on its way out.

Then inspect the ground beneath the car before you hand the keys back. Whatever the seller says, a fresh puddle tells the truth. This works best if the car usually parks in the same spot: look at that spot before you start the engine, and again afterwards.

11. The OBD scan, and its real limits

Plug in the scanner and read the codes. There are three types and the distinction matters:

History codes are stored from past faults. They can be cleared without anyone repairing anything, so treat them as a prompt to ask questions rather than proof of a problem.
Pending codes are faults detected on the current drive but not yet confirmed.
Permanent codes are serious. The fault the code describes is still active on the car right now. A car with permanent codes should not be bought at a premium.

Know what a scanner cannot do. Codes can be erased in seconds with a cheap dongle, which is why a car can show a clean scan and a light-off check engine light while having a real fault. Clearer still, sellers have been known to transplant the memory from a faultless car, so the scanner reads clean data from a faulty vehicle. No tool detects this. Body condition has to be judged by eye and by hand, which is exactly why the magnet test and the panel inspection earlier in this guide are not optional.

So treat the scan as one source among several. A single pending code on an otherwise healthy car is common and often trivial. A scan showing a catalytic converter, an EVAP system or a misfire code deserves a serious conversation about price, because those are expensive. Run the scan before you start the engine and again after the test drive, because codes that appear once the car is warm and under load are the ones that matter.

12. Your verdict: buy, negotiate, or walk away

Sort every finding into one of three piles.

Walk away, no negotiation: milky oil; white exhaust smoke once warm; structural or pillar damage; a chassis or jacking point that has been deformed; flood or water ingress evidence; a rusted-through sill; permanent OBD codes that correspond to a serious fault. None of these are price problems. They are safety and reliability problems, and there is no discount that makes them acceptable.

Negotiate, in cash, in writing: worn tyres; a battery at the end of its life; brake pads or discs near the limit; a failing AC compressor; worn shock absorbers; worn suspension bushes and mounts; a cracked screen; failing window regulators; a missing spare or jack. Every one of these is a known, bounded, ordinary used-car cost. Add up the realistic repair estimates and take them off the price. Get it agreed in writing before any money changes hands.

Ignore, or accept as the price of entry: minor cosmetic marks, a slightly tired idle, an aftermarket accessory, a missing service book where the seller genuinely kept no records, and normal wear consistent with the stated mileage.

Finally, get an independent professional inspection before you commit. Use a workshop you chose yourself, never one recommended by the seller. A seller who objects to that has given you your answer. If you are buying out of your own city and cannot easily travel to a lift or ramp, ask the seller to take the car to a shop you nominate. If they will not, price that refusal in.

Meeting a seller safely

Inspecting a car means meeting a stranger, and most of that risk has nothing to do with the engine. Take sensible precautions when you arrange a viewing through Automagma or anywhere else:

Meet in daylight, ideally in a busy public place rather than a quiet street or an isolated house.
Bring someone with you if you can.
Keep your payment method to yourself until you are certain. Have the transfer arranged and ready, but do not produce cash in front of anyone until you have completed the inspection, verified the seller is the registered owner, and seen the original registration document in your hand.
Take a full set of photographs before you leave, including the odometer, the engine bay, and any fault you agreed to accept.
Insist on a proper written sale agreement, and read the vehicle details back against the registration document before you sign anything.

Do not hand over a full amount on the promise that the transfer will be completed next week. Stage your payment around the checks — our documents guide covers exactly how to do this.

Your inspection checklist

Print this or keep it on your phone. Work it top to bottom, because the order is deliberate — it catches the deal-breakers before you start negotiating over paint.

Identity — chassis number on the car matches the documents; registered owner is the person selling; province verification portal checked; auction sheet independently verified if imported.
Structure — radiator core support straight with factory welds; pillars smooth with no cut-and-weld; boot floor and lip original; chassis and jacking points undamaged; car sits level.
Paint — even panel gaps mirrored on both sides; matching colour in daylight and shadow; no overspray on trim; magnet grips every panel.
Rust — sills and lower doors checked from underneath; arch lips and wing bottoms sound; no structural corrosion.
Cold start — oil amber and clean, never milky; no sludge under the filler cap; coolant clean and at level; belts and hoses sound; battery terminals clean; no fresh leaks.
Exhaust — steam clears, smoke does not; blue at idle is serious; black means rich mixture.
Wheels and brakes — even tread across all four; same size tyres; no bulges or cuts; disc lipping noted; firm pedal; straight-line braking.
Suspension — all four corners rebound together; no creaks, clunks or persistent bouncing.
Cabin — no musty smell; floor mats and headliner dry; every warning lamp lights up; belts, seats, windows, locks and all lights working; odometer recorded and stable.
Test drive — fifteen to twenty minutes; cold first, then hot; over real broken tarmac; smooth gears; no pulling, hesitations or overheating; no fresh puddle left behind.
OBD scan — read before starting and again after the drive; no permanent codes; understand what any other code implies for price.
Independent check — your own workshop, not the seller's; findings written down and priced before any money moves.

Two final pieces of advice. Take photographs of everything, because in three weeks you will not remember exactly which scratches you agreed to accept and which you did not. And if at any point during the inspection the seller becomes impatient, dismissive, or starts explaining why a particular check is unnecessary, listen to that rather than to the car. It is the most reliable diagnostic information you will get all day.

Once you have completed a proper walkaround, the next step is agreeing a fair number. How to buy a used car in Pakistan in 2026 covers how to read the market, set your budget, and negotiate without losing the car you already decided on. If you are on the other side of this and selling your own car, how to sell your car in Pakistan covers getting more buyer attention for it.

How to Inspect a Used Car Before Buying in Pakistan (2026)