I-CAR Cheat Sheet 2026

The 30 highest-yield I-CAR facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. What is the function of a base coat in paint refinishing? → It provides the color layer of the finish
2. Which weld defect appears as small holes or voids within the weld bead and is often caused by contamination or inadequate shielding gas? → Porosity
3. Why is documentation important in collision repair analysis? → To assist with insurance and repair accuracy
4. What tool is commonly used to measure structural alignment? → Three-dimensional measuring system
5. What is the purpose of OSHA regulations in auto body shops? → To ensure workplace safety and health standards
6. Why is proper mixing of paint important in refinishing? → To ensure uniform color and durability
7. What is the correct surface preparation before applying adhesives? → Cleaning, sanding, and removing contaminants
8. What is the primary purpose of structural adhesives in collision repair? → To provide structural strength and distribute stress
9. What is the typical curing method for two-part structural adhesives? → Chemical reaction and sometimes heat
10. What does 'wire feed speed' control in a MIG welding setup? → The rate at which filler wire is delivered to the weld pool, which determines amperage
11. Why is structural analysis critical in collision repair? → To ensure vehicle structural integrity is restored
12. Which personal protective equipment (PPE) is specifically required to protect a welder's eyes from UV and IR radiation? → A welding helmet with the appropriate shade lens
13. What is a common cause of color mismatch in refinishing? → Application method and environmental conditions
14. What does a spectrophotometer measure in auto refinishing? → Color and light reflectance properties
15. Which action helps reduce VOC emissions during painting? → Using low-VOC paints
16. Why is proper ventilation important in a spray booth? → To remove hazardous fumes and prevent fires
17. Which of the following repair events MOST commonly triggers the need for a forward-facing camera calibration? → Windshield replacement.
18. Which of the following measurements requires the Digital Volt-Ohm Meter (DVOM) to be connected in series with the circuit being tested? → Amperage (Current)
19. How should mixed adhesive cartridges be stored for reuse? → In cool, dry storage
20. What is the role of the clear coat in refinishing? → To protect and provide a glossy finish
21. Why is it important to follow manufacturer specifications when using adhesives? → It ensures proper bonding and safety
22. What is a primary failure cause in adhesive bonding? → Improper surface preparation or contamination
23. What does the term 'pulling' refer to in structural repairs? → Realigning damaged structural components
24. Which type of personal protective equipment (PPE) is essential during paint application? → Respirator mask
25. Which type of weld joint is most commonly used when installing a sectioned structural rail? → Butt weld joint with backing
26. What is the correct sequence for performing a MIG plug weld on a structural panel? → Weld around the perimeter of the hole, then fill the center
27. How does a technician confirm that structural repairs meet specifications? → Using post-repair measurements with certified equipment
28. When performing a Squeeze-Type Resistance Spot Weld (STRSW), which of the following is a critical step to ensure a quality weld? → Ensuring the total metal thickness does not exceed the welder's maximum capacity.
29. After completing a four-wheel alignment on a vehicle equipped with ADAS, which of the following is the MOST critical next step? → Check for and perform any required ADAS calibrations.
30. Why must spills of automotive chemicals be reported immediately? → To prevent legal penalties and hazards