What Is a Pre-Purchase Inspection? Cost, Cover and Is It Worth It?
Seven out of ten used cars have at least one fault, and most buyers wouldn't spot it. Here's what a pre-purchase inspection covers, what it costs, and how to book one before you buy.
The Cazoo editorial team
Published on 27 August 2026 | 6 mins read
Buying a used car is exciting – it might mean more space for a growing family, something cheaper to run for a new commute, or that all-important first car. It's also one of the bigger purchases most people make, so it's natural to want reassurance that you're making the right call. According to the AA, seven out of ten used cars it inspects have at least one fault, and some of those faults cost more than £1,000 to put right, yet 45% of buyers who check under the bonnet themselves have no real idea what they're looking for. That's where a pre-purchase inspection (PPI) comes in.
A pre-purchase inspection is a detailed check of a used car's mechanical, structural and safety condition, carried out by a qualified mechanic before you commit to buying it. It's designed to catch the kind of problems that aren't obvious on a test drive or a quick look round the car, so you know exactly what you're taking on before you hand over any money.
At Cazoo, we partner with ClickMechanic to offer pre-purchase inspections for used car buyers looking at vehicles listed by independent dealers on Cazoo. You can book a ClickMechanic inspection in a couple of minutes, with no obligation to buy the car if the report throws up anything you're not happy with.
Why should you get a pre-purchase inspection?
A trained mechanic will thoroughly check the car's mechanical, structural and safety components during a pre-purchase inspection, picking up on issues that are easy to miss during a standard viewing or test drive. Because ClickMechanic's inspectors are independent of both buyer and seller, you also get a genuinely unbiased assessment rather than just the seller's own reassurances, giving you a much clearer picture of the car's real condition.
Beyond the peace of mind of knowing a professional has looked the car over, an inspection report is also useful leverage. If it turns up faults, you can use it to negotiate a fairer price that accounts for the work needed, or simply walk away from a car that isn't what it seemed.
What Does a Pre-Purchase Inspection Cover?
A pre-purchase inspection with ClickMechanic covers the car in real depth, from the cabin to the underside.
Inside the car, inspectors check things like the door locks, boot and tailgate operation, door seals and hinges, seat mechanisms, upholstery, dashboard condition, lighting, sunroof, rear parcel shelf, carpets and charging ports. On the electrical side, they test the headlights, indicators, brake lights and fog lights, the instrument panel, wipers and washers, mirrors, climate control, infotainment screen, battery voltage and key fob.
The inspection also includes a road test of up to five miles, covering the ignition, warning lights, cold starting, exhaust smoke, engine performance, braking, steering alignment, handling, suspension noise and gear shifts, along with systems like stop-start, hill start, cruise control and air conditioning where fitted. Under the bonnet, the mechanic checks fluid levels including oil, coolant, brake and clutch fluid, along with hoses, belts, leaks, engine mounts and general cleanliness.
Outside, they'll look over the tyre tread and wear, spare wheel condition, locking wheel nut, rims and any inflation kit, as well as the bodywork, glass, paintwork, corrosion, bumpers, fuel cap and door locks, checking for signs of past repairs. Finally, brakes, suspension and steering get a visual once-over, including brake pads and discs, shock absorbers, suspension components, steering and ball joints, and the power steering system.
Exactly how much of this you get depends on which tier you choose. ClickMechanic's Basic inspection covers 86 points, its Standard inspection covers 136 points and adds a bodywork check and phone consultation, and its Premium inspection, the most thorough option, covers all 185 points, including vehicle diagnostics and an undercarriage check.
How does a pre-purchase inspection compare to an HPI check or MOT?
It's easy to confuse a pre-purchase inspection with the other checks you might run on a used car, but they cover different ground. A pre-purchase inspection looks at the physical, mechanical condition of the car in front of you: how well it drives, whether anything is worn, damaged or leaking, and whether it's been looked after. An HPI check is a paperwork check instead, and tells you whether the car has any outstanding finance, whether it's ever been stolen or written off, and whether its mileage adds up. A current MOT certificate confirms the car met the legal minimum safety and emissions standard on the day of its test, but our MOT check guide explains why that doesn't go anywhere near as deep as a pre-purchase inspection, and cars under three years old won't have one at all. Ideally, you'd use all three together: an HPI check for the paperwork, a pre-purchase inspection for the mechanical condition, and the MOT history as a useful extra data point.
When Should You Get a Pre-Purchase Inspection?
A pre-purchase inspection is worth booking whenever you can't independently verify a car's condition or history yourself. That's especially true if the car has no service history, since without one there's no way to know whether key maintenance has actually been carried out, or whether it's genuinely just missing paperwork for an otherwise well-looked-after car. It's just as important when buying from a private seller, since private sales don't come with the warranties or comeback you'd usually get from a dealer, and an independent inspection adds a layer of transparency that a private sale doesn't otherwise offer. It's also useful if you're buying a car in another part of the country and can't view it in person yourself, since ClickMechanic can send a mechanic to the car on your behalf and email you the report.
How Much Does a Pre-Purchase Inspection Cost?
ClickMechanic's inspections start from £79 for the Basic, 86-point check, rising to £95 for the Standard, 136-point inspection and £137 for the Premium, 185-point inspection, which is the most comprehensive option and the one to choose if you want the fullest possible picture of a car's condition. All three include a road test and a full report emailed to you as soon as the inspection is finished, and ClickMechanic offers same-day and next-day bookings across the UK, so you're rarely waiting long to get a car checked.
How to Book a Pre-Purchase Inspection with Cazoo and ClickMechanic
Booking a pre-purchase inspection through Cazoo is straightforward thanks to our partnership with ClickMechanic. You can book an inspection with ClickMechanic in a couple of minutes: choose the car you're considering, select the inspection level you want, and a qualified local mechanic will come to the vehicle to carry out a comprehensive check.
You'll also find the option to book an inspection alongside vehicles listed by independent dealers on Cazoo. ClickMechanic's technicians liaise directly with the dealer to arrange access, so the whole process is handled for you from booking through to report.
Is a pre-purchase inspection worth it?
For the cost of a tank of fuel, a pre-purchase inspection can save you from buying a car with expensive problems you'd otherwise only discover after handing over your money. Given that around seven in ten used cars have at least one fault, and most buyers wouldn't know what to look for even if they checked themselves, it's one of the more worthwhile bits of due diligence you can do before buying privately or from an independent dealer.
FAQs
How long does a pre-purchase inspection take?
Most Basic and Standard inspections take between one and two hours, while a Premium inspection, which covers more ground including an undercarriage check, typically takes two to three hours.
Is a pre-purchase inspection worth it on a dealer car?
It's most valuable on private sales and cars from independent dealers, since these don't always come with the same warranties as a franchised dealer. That said, it's never a bad idea if it gives you extra confidence before a big purchase.
Do I need a pre-purchase inspection if the car has a full service history?
A full service history is reassuring, but it only tells you what's been done in the past, not the car's current condition. A pre-purchase inspection checks how the car is right now, so the two are complementary rather than one replacing the other.
Find your next car on Cazoo
Ready to start looking? Browse cars listed by trusted independent dealers in our listings, or read our how to buy a used car guide for more tips on what else to check before you commit.