Pre-purchase inspection: the checklist before you buy a used car
A pre-purchase inspection is an hour on a lift before you hand over the money. It covers structure, brakes, suspension, leaks, tires and stored fault codes, and it's the cheapest negotiating tool you'll ever buy: the report either justifies the price or takes money off it.
Key points
- Ask for it on a lift. Half the findings aren't visible from the ground.
- Corrosion on the structure is the one finding that ends a deal outright.
- Stored codes reveal faults a seller cleared the week before.
- A seller who refuses an inspection has answered the question for you.
What gets looked at, and in what order
The car goes up and the underside is read first: frame rails, subframe mounts, brake and fuel lines, the exhaust run, and every place where road salt collects. In this climate that's where a car's real age shows, not on the odometer.
Then the wear items: pad and disc thickness, tire depth and date codes, shocks, bushings, ball joints, boots. Then the leaks, which are easier to find and easier to price than most buyers expect.
The findings that end a deal
Structural corrosion is the one that stops everything. A rusted surface panel is cosmetic; a rusted structural member is a car that shouldn't be bought at any price, because the repair is worth more than the vehicle.
The other one is evidence of a collision repair that was not declared: mismatched panel gaps, overspray in the door jambs, a replaced rail. That's a conversation to have before the money moves, not after.
The findings that are a negotiation, not a no
Most of what turns up is neither fatal nor free. Brakes at the end of their life, tires that won't last the winter, a leaking valve cover gasket, a worn wheel bearing. Each one has a number attached to it, and the number is what you take to the seller.
That's why the report is worth more than its price. You're not buying a verdict, you're buying a list with costs on it.
The scan matters as much as the lift
Reading stored and pending codes catches the fault that was cleared the week before the ad went up. A dashboard with no lights on it proves nothing on its own: a code cleared on Monday leaves a car that looks perfect on Saturday.
Readiness monitors tell the same story. If they haven't completed their self-checks, the computer was reset recently, and the question is why.
Frequently asked questions
How long does a pre-purchase inspection take?
About an hour on a lift for a normal passenger car. Call ahead so we can hold a bay: it isn't a job to squeeze between two others.
Can I bring a car I haven't bought yet?
That's the whole point. Bring it before the money moves. Most sellers who are being straight with you'll agree without hesitation.
What if the seller refuses an inspection?
Treat that as the finding. A seller with nothing to hide loses nothing by an hour on a lift.
Does the inspection come with a written report?
Yes, with what was found and what each item costs to put right, so you can use it in the negotiation or walk away knowing why.
Want it looked at?
Pick the day and time online. It takes a minute.