
In the wild world of used car buying, a pre-purchase inspection (PPI) can be the ultimate truth-teller. It’s the moment when you find out if that sweet ride is a diamond in the rough or a soon-to-be driveway ornament. In this guide to PPIs, we’ll show you how to ace the car inspection process, find a trustworthy mechanic, and make the best decision possible.
What is a pre-purchase inspection (PPI)?
TL;DR – A pre-purchase inspection is a critical step in the used car buying process. It provides valuable information about the condition of the vehicle, helps you avoid costly repairs, and gives you the confidence to make an informed purchase decision.
A PPI is a comprehensive evaluation of a used car by a qualified mechanic or technician before you make the final decision to purchase it. The purpose of this inspection is to identify any hidden problems or potential safety issues that could impact the car’s reliability or safety—which save you money.
The benefits of a pre-purchase inspection are numerous. First and foremost, it can give you peace of mind knowing that you’re buying a car that’s safe and reliable. It can also help you avoid costly repairs down the road by identifying potential issues before they become major problems. As a bonus, the inspection results can be used to negotiate a better deal with the seller, especially if any issues are discovered during the inspection.
It’s important to note that not all pre-purchase inspections are created equal. Some mechanics will cut corners and won’t be as comprehensive or objective as others, so it’s a good idea to bring your vehicle into a certified service center—preferably one that specializes in the make and model of the car you’re interested in.

What does a pre-purchase inspection entail?
TL;DR – PPIs vary by technician and mechanic, but usually they involve visual exams of the vehicle’s major components, a test drive and diagnostics.
A vehicle pre-purchase inspection is typically performed by a qualified tech or mechanic. It includes a visual examination of the car’s exterior and interior, a test drive, and a more detailed inspection of the car’s mechanical systems. The mechanic may use specialized equipment to check for problems with the engine, transmission, brakes, suspension, and other important components.
Again, not every technician will follow the same PPI checklist—there’s no industry standard set—but the list of items usually includes the following:
Exterior:
- Inspect the car’s body and paint for signs of damage, rust, or other issues.
- Look for large paint scratches that may eventually lead to rust or corrosion.
- Check the tires and wheels for wear and tear.
Interior:
- Examine the car’s seats, dashboard, and other interior components for signs of damage or wear.
- Test the car’s electrical systems, including the air conditioning, radio, and other features.
Engine:
- Perform a detailed inspection of the car’s engine, checking for signs of premature wear.
- Examine the oil, coolant, and other fluids to ensure they’re at the correct levels.
Transmission:
- Inspect the car’s transmission, checking for any issues with shifting, noise, or fluid levels.
Brakes:
- Test the car’s brakes to ensure they’re working properly and don’t need replacement.
- Look for signs of brake rotor damage, which could be indicative of poor vehicle maintenance.
Suspension:
- Inspect the car’s suspension system, checking for signs of wear or damage that could affect the car’s handling or ride comfort.
Exhaust system:
- Examine the car’s exhaust system, checking for leaks or other issues that could affect emissions or performance.
- Look for signs of catalytic converter theft.
Electronics:
- Assess the car’s electronic systems, including battery, alternator, and starter.
Undercarriage:
- Inspect the car’s undercarriage, looking for signs of rust, corrosion, or other issues that could affect the car’s structural integrity.
Odometer:
- Check for signs of mileage rollback fraud, comparing odometer readings to vehicle history reports.
Vehicle history:
- Identify any past problems from its vehicle history report, including any flood damage or salvage titles
When should you get a used car inspection?
TL;DR – Try to have the inspection done before you agree to purchase the car, but if that’s not possible, make sure your offer is contingent on the results of the inspection. Getting a PPI is recommended for any used car purchase, even if the car appears to be in good condition.
Getting a mechanic inspection is a wise decision in most situations when you’re considering buying a used car. However, there are certain circumstances where it’s particularly important to pay for a PPI. For example, if you’re considering buying a car from a private seller, it’s an excellent idea; private sellers may not be as forthcoming about the car’s history or issues as a dealer would be. In this instance, an inspection can help you avoid buying a lemon.
Similarly, if you’re considering buying a car that’s out of warranty or has high mileage, an PPI car inspection can give you a better idea of the vehicle’s condition and potential repair costs.
In terms of timing, it’s best to have a car inspection before buying. This way, if any issues are discovered during the inspection, you can either negotiate with the seller to have the issues fixed or decide not to buy the car altogether.
In some cases, it may not be possible to have the inspection done before making an offer on the car. If you’re buying a car that’s located away in another state, for example, you may need to make an offer before you can have the car inspected. In this case, make sure that your offer is contingent on the results of the inspection.
How much does a PPI cost?
TL:DR – The cost of a pre-purchase inspection can vary by location, the type of car, and the mechanic or shop. Always request a quote and schedule a time before bringing the vehicle in for your PPI.
On average, however, expect a used car vehicle inspection to cost anywhere from $100 to $500.
While the cost of paying a mechanic to look at a used car may seem high, it can save you money in the long run by identifying potential issues with the car before you buy it.
Keep in mind that the cost of the inspection may be negotiable. If you’re buying from a private seller, you may be able to negotiate the cost of the inspection into the final sale price. Additionally, most sellers should accept a lower price if issues are found during the inspection.
How to find a pre-purchase inspection near you
TL;DR – Look for a professional who has a good reputation in the industry, with a proven track record of performing high-quality inspections. When in doubt, go to a dealership near you.
The cost of the inspection should not be the primary factor in choosing a mechanic or shop. Look for a reputable mechanic with experience working on the type of car you’re considering buying. A qualified mechanic can provide you with a detailed report of the car’s condition, allowing you to make an informed decision about whether or not to buy the car.
Don’t just pick the first place upon searching “pre purchase inspection near me.” Here are some tips to ensure you’re picking the best used car inspection service:
- Certifications: Look for mechanics who are certified by organizations such as the National Institute for Automotive Service Excellence (ASE). Mechanics who are certified have passed rigorous testing and have demonstrated their knowledge and experience in the field.
- Recommendations: Ask friends, family, and colleagues for recommendations on a reputable mechanic. Personal recommendations can be valuable in finding a mechanic who is trustworthy and reliable.
- Online reviews: Look for reviews of local mechanics online. Websites such as Yelp and Google reviews can provide insight into the quality of service provided by local mechanics.
- Local car clubs: Local car clubs are a great resource for finding a mechanic who specializes in the type of car you’re interested in. They can provide recommendations for a mechanic who is knowledgeable and experienced with the specific make and model of the car you’re considering.
- Better Business Bureau: The Better Business Bureau (BBB) can provide information on local mechanics and their reputation. You can also check for complaints or issues filed against a mechanic with the BBB.
- Dealerships: It can sometimes be difficult to trust an independent mechanic to inspect used cars. If this sounds like your situation, you might want to consider getting a PPI performed by a car dealer near you. They may charge a little more, but they’ll likely be more thorough.
What about mobile used car inspections from businesses like Lemon Squad? While they may be more convenient for both buyer and seller, these PPI services are pretty hit-or-miss in terms of quality, as you can read about here.
Buying a used car can be an exciting and budget-friendly way to get behind the wheel of a reliable vehicle. But it can also be a daunting task full of hidden pitfalls and potential headaches. A pre-purchase inspection can be your secret weapon to help you separate the dream cars from the lemons.
Godspeed!


