CVFI Cheat Sheet 2026: One-Page Review of Must-Know Facts

What This Cheat Sheet Covers (and What It Doesn't)

This page is a one-screen-at-a-time review for the Certified Vehicle Fire Investigator credential issued by the National Association of Fire Investigators (NAFI). It does not describe any other certification that happens to share the same four-letter acronym. If you are still orienting yourself, start with What Is CVFI? or What Does CVFI Stand For?, then return here for the facts worth memorizing.

One honest caveat up front: NAFI has not published an official exam blueprint with percentage weights in the issuer material reviewed for this article. The twenty topic headings below come from the preparation curriculum of NAFI's qualifying vehicle fire investigation course. They are illustrative preparation topics, not a guaranteed map of exam questions, so treat them as a study scaffold rather than a scoring formula. For a deeper walk through each area, see the CVFI Exam Domains guide.

The Exam Format in One Glance

Two practical implications follow. First, because questions are drawn at random, you cannot predict which preparation topics will dominate your particular form, so avoid skipping any area. Second, the two-hour window against 75 questions leaves a little under two minutes per item, which is comfortable for recall questions but tight if you are re-deriving concepts from scratch. For the arithmetic on the cutoff, see CVFI Passing Score; for a candid read on difficulty, see How Hard Is the CVFI Exam?

Eligibility Gates You Must Clear First

The CVFI is not a walk-up exam. NAFI's program guidelines list a stack of prerequisites that must all be satisfied before testing:

• Age 18 or older
• High-school diploma, GED, or equivalent
• Good moral character and ethical conduct
• NAFI membership in good standing
• CFEI certification (Certified Fire and Explosion Investigator)
• Board-accepted practical vehicle-fire investigation experience
• An approved application
• Attendance at a qualifying course

The experience guideline is usually 25 or more actual vehicle-fire investigations, subject to Board review. That number is a guideline, not a guarantee; the Board evaluates what you actually did on those cases. If you do not yet hold the CFEI, you cannot sit for the CVFI on its own, although NAFI notes that registrants may take the CFEI and CVFI at the same training event, subject to eligibility. The full checklist lives in CVFI Requirements.

Fees and Deadlines at a Glance

The 2027 national program is listed for September 13-16, 2027, which is the course referenced for this review. A source check on October 5, 2026 was used to confirm these figures, but fees and dates can change, so verify against NAFI before you budget. Travel, meals, lodging, and NAFI dues are on top of the table above. A fuller accounting is in CVFI Certification Cost, and scheduling details are in CVFI Exam Dates.

The 20 Preparation Topics, Grouped for Recall

Twenty headings is a lot to hold in your head. Grouping them into functional clusters makes the list easier to recall under exam pressure. These clusters are a memory aid of my own, not NAFI's official structure.

The wording in Cluster C, including “Electrical Vehicles” and “Case Evaluation of Stage Vehicles,” reproduces the issuer's own heading text, so do not be surprised by the unusual phrasing in course materials.

Topics Worth Extra Memory Space

Because NAFI publishes no weights, no topic can be called “heavier” on authority. What we can say is that some topics demand specific vocabulary and distinctions that trip candidates up on closed-book items. Prioritize understanding over rote lists in each case.

Electrical Systems and Electrical Vehicles

Know the difference between a conventional 12-volt system's behavior in a fire and the added hazards of high-voltage architectures. NAFI has historically warned that a narrower EV-focused training program did not cover every CVFI exam topic, which is a useful reminder that EV knowledge supplements, rather than replaces, the broader vehicle fire curriculum. That warning comes from a page that no longer loads in full, so it is cited here only as context, not as a statement of current exam coverage.

Fuel Systems, Vehicle Fuels, and Post-crash Fuel Fed Fires

Expect questions that ask you to connect a fuel type or delivery component to a plausible fire behavior. Be ready to reason about where fuel could be released, what ignition sources are realistic, and how post-crash fires differ from fires that start in an undisturbed parked vehicle.

Staged Vehicles, Live Burns, and Case Evaluation

These are the investigative-judgment topics. Practice articulating the indicators that make an investigator suspect a staged loss, and the cautions against over-reading any single indicator. NFPA 921's emphasis on a systematic, evidence-based method is the lens to apply.

Black Box Crash Data Retrieval

Understand what electronic data can contribute to a fire investigation, why it must be preserved before further handling, and what its limits are. Questions here often test sequencing: what do you document or download first, and why.

FMVSS, SAE, Recalls, and Products Liability

These four headings are easy to under-study because they feel administrative. Learn what each source is and what it governs: federal safety standards, industry engineering standards, manufacturer or regulator-driven recall and bulletin processes, and the legal theories around defective products.

Sequencing Your Review Around the Course

Because testing happens only alongside approved training, your timeline is driven by the course date rather than by an open testing window. Here is one way to sequence preparation, built around the CVFI topic clusters rather than generic habits. For a fuller plan, see the CVFI Study Guide.

Tune this to your experience. Investigators with heavy field time may move faster through Cluster B, while those newer to electrical or EV topics should lengthen Cluster A. To test yourself under time pressure, use the CVFI practice test and review every miss against NFPA 921 rather than just memorizing the answer.

After You Pass: Keeping the Credential Current

The CVFI remains current through NAFI membership in good standing and CFEI recertification every five years. CFEI renewal requires 40 qualifying credits during that five-year period. Credits are not necessarily classroom hours, because qualifying NAFI training and instruction can earn enhanced credit. There is no separate recertification fee for the CVFI while membership dues remain payable.

If your goal is a career move, the credential's value depends on your employer type and jurisdiction; it is commonly relevant to public-sector fire investigators, insurance and private investigators, and those who support litigation. Compare the evidence in CVFI Jobs, weigh the return in Is the CVFI Certification Worth It?, and consult the CVFI Salary Guide for earnings context. No current overall pass rate was found in NAFI's reviewed materials, so treat any figure you see elsewhere with caution; the CVFI Pass Rate article explains what is and is not known.

Ready to check your recall against realistic question styles? Take a timed set on the main practice test site before your course date.

Frequently Asked Questions

For the broader picture of the credential, the overview pages CVFI Certification and What Is CVFI Certification? are good companions to this cheat sheet.