For serious buyers and sellers, verifying engine health means going beyond what you can see. Our Compression and Leak-Down Testing Add-On provides a true mechanical assessment of your vehicle’s internal condition—helping you prove engine integrity and performance with measurable data.

Performed by a certified, independent PPI Verified partner technician, this add-on includes both compression testing (which measures the pressure each cylinder can hold) and leak-down testing (which identifies how well those cylinders maintain pressure). Together, they reveal early signs of valve wear, piston ring issues, head gasket leaks, or uneven performance long before they become major problems.

For sellers, this is your opportunity to demonstrate transparency, back up your asking price, and show buyers that your car’s powerplant is as strong as it looks. Add Compression & Leak-Down Testing to your PPI Verified inspection to give buyers complete confidence—from the inside out.

*Note: Prices starting at $399.00. Depending on your engine displacement, year, make and model of your vehicle, additional costs may be incurred. You will be contacted with a quote specific to your vehicle prior to performing the tests.