Pre-Purchase Inspection
The pre-purchase inspector's certification.
Pre-Purchase Inspection is the credential for mechanics who evaluate used vehicles before customers buy. Covers structural, mechanical, electrical, and documentation checks, plus how to write a clean, professional report a buyer can act on. Everything below is free, no login, no paywall. Work through the skill areas, drill them in Study Mode, and when you're ready, prove it with the certification exam.
Your readiness to certify
Drill all 60 concepts in Study Mode. Mark each one "Got it" once you know it cold. When every concept is cleared, you're ready for the PPI exam.
What you'll be able to do
- VIN decoding and title/history verification
- Frame and structural damage inspection
- Corrosion patterns and hidden rust
- Powertrain evaluation without teardown
- Fluid analysis: color, smell, contamination
- Suspension, steering, and tire wear reading
- Brake system inspection and pad-life estimation
- Interior, electrical, and HVAC function checks
- Test-drive protocol and diagnostic scan procedure
- Report writing: what to include, what to escalate, what to skip
Skill areas
15 lessons, each one short enough to finish in a break. Every lesson teaches the system from the ground up, ends with a call to work, and tracks which concepts you have cleared.
VIN & History
Every pre-purchase inspection starts with identity: is this vehicle actually what the seller says it is, and does the paper trail match the metal?
Frame & Structure
Structural damage is the finding that changes everything about a deal.
Powertrain
The engine is the most expensive assembly on most vehicles, and the majority of its problems announce themselves through sound, smoke.
Fluids
Fluids are the vehicle's blood work.
Suspension
Suspension wear rarely strands anyone, which is exactly why sellers ignore it and buyers underestimate it.
Brakes
Brakes are the one system where a finding is never optional information; it is a safety call.
Electrical
The charging system and the diagnostic data stream are where a PPI gets objective fast.
Interior & HVAC
The cabin is where the buyer will live with this vehicle, and it is also where flood damage, water leaks, and swapped interiors leave their evidence.
Body & Paint
Body and paint inspection is repair archaeology.
Test Drive
The road test is where problems that hide at rest come out.
Diesel Specifics
Diesel trucks carry repair bills that dwarf their gasoline counterparts, and their emissions systems add a legal dimension most buyers never consider.
EV Specifics
Electric vehicles flip the PPI priority list.
Documentation
Your inspection is only as good as the report that survives it.
Business & Legal
A PPI provider signs their name to an opinion about a vehicle someone is about to spend real money on.
Reading Wear
Every used vehicle is a record of how it was maintained, driven, and repaired, written in tire tread, rubber, and missing parts.
Studied the material? Get PPI certified.
The Pre-Purchase Inspection exam turns what you just learned into a verifiable credential drivers and shops can look up. 45 questions · 60 minutes · 75% to pass · Free.
Studying on MechanicRank is free forever. There's no obligation to take the exam.
The work these lessons teach.
Real jobs from Supercanic trucks — the systems above, out in the field.
Standards and further reading
Primary sources behind this page. Federal safety, emissions and consumer-protection references, worth reading before you authorize any repair.
- NHTSA recall & complaint lookup Check any symptom against open recalls and technical service bulletins before paying for a repair.
- FTC auto repair basics Your rights on estimates, authorization and disputed repair bills.
- ASE certification The national standard for automotive technician testing and certification.
- California Bureau of Automotive Repair Licensing, consumer complaints and shop regulation in California.