How Does a Pre-Purchase Inspection for Cars Work?

A pre-purchase inspection is a comprehensive evaluation done by a qualified mechanic to assess the condition of a used car before you buy it. The goal of a pre-purchase inspection is to identify existing problems and potential future issues before deciding whether to proceed with the purchase.

Why is a pre-purchase inspection important?

2. Provides peace of mind. Knowing the exact condition of a used car helps you make an informed decision. It reduces the likelihood of buying a car that leaves you stranded or has major repair bills down the road.

3. Ensures safety. A PPI includes checking that all safety features are functioning correctly, so you can have greater assurance that you, your passengers and other drivers are protected.

4. Helps with negotiation. If a mechanic discovers issues during a pre-purchase inspection, it can help you to negotiate a lower car price or request repairs before you buy.

What does a pre-purchase car inspection include?

Usually a standard pre-purchase inspection involves the following, but details can vary depending on the provider.

☐ Exterior inspection. Checks for signs of accidents, flood damage, rust or paint inconsistencies. Includes aspects like tire condition, underbody damage and window cracks.

☐ Interior inspection. Assesses the condition of upholstery, mats, the headliner (ceiling) and seat belts. Includes inside lights, air conditioning, gauges, infotainment and other electrical items.

☐ Mechanical evaluation. Examines the engine, transmission, brakes, steering, suspension and exhaust systems for wear or damage. Includes checking for leaks and missing parts. 

☐ Diagnostic testing. Uses specialized tools to detect error codes or issues within the vehicle’s computer systems.

☐ Test drive. Evaluates the car’s performance, including acceleration, braking and handling.

☐ EV inspections. Includes assessing battery health and whether degradation is normal for the car’s age. 

Where to get a pre-purchase inspection

When deciding where to take a car for a pre-purchase inspection, it’s important to choose the provider yourself. For example, if you’re buying a car from a private seller, don’t rely on a pre-purchase inspection report they provide.

These people and places typically offer pre-purchase inspections.

• Local mechanics. You may already have a relationship with a trusted mechanic who will provide an unbiased assessment. This could be someone who works independently or for a body shop.

• Specialized technicians. For specific makes or models, a technician familiar with that brand can provide more detailed insights.

• Mobile inspection services. These services come to the vehicle’s location, offering convenience, especially for private sales. This is also a good option if you’re buying a car in another state.

• Dealerships. Some dealerships offer PPIs, but it’s not recommended to have the inspection done at the same dealership where you’re buying the car. If you’re buying from a used car lot, you might get an inspection at the service center of the new car dealership for that brand.

• National retailer. Some chains, such as tire and oil change businesses, provide car inspections at a lower cost.

How much does a pre-purchase inspection cost?

The typical cost of a pre-purchase inspection is about $100 to $300. Prices vary based on where you live, the depth of the inspection and where it’s done. Even though this is an added expense, it can prevent you from buying a damaged car and save you from costly repairs in the future.

Members of AAA and Auto Club may have access to discounts on pre-purchase inspections^[0].

When to schedule a pre-purchase inspection

The best time to arrange a PPI is after you’ve narrowed down your vehicle choices but before you finalize a purchase. This timing ensures that any issues discovered can influence your decision-making process or negotiation strategy. Taking a car for an inspection when you test drive it can save you time.