Check Used Car Frame Stress After Accident Repairs

Spot hidden frame damage to avoid unsafe cars and costly structural repairs

Difficulty: Moderate-AdvancedTime Needed: 1–2 hoursRecommended Season: Any

Prevent $1,500–$5,000 in structural repairs and lost resale value.

Tags:frame inspectionaccident repairused carstructural integrityhidden damage

Inspect door, hood, and trunk gaps for uneven spacing as signs of misalignment.
Check for paint overspray or rough textures underbody that reveal hidden repairs.
Use a magnet on panels to detect body filler masking frame distortion.
Examine undercarriage welds for odd patterns or grinding from straightening.
Measure diagonals between suspension mounts for hidden frame twists.
Look for new or missing underbody fasteners indicating recent frame repairs.
Inspect for paint cracks near windshield corners and pillars from frame flex.
Check wheel alignment by comparing tire positions for unresolved frame issues.
Assess underbody seam sealer for fresh or uneven lines indicating repair.
Tap frame rails with a rubber mallet to hear hollow spots suggesting hidden rust.
Review airbag areas for uneven dashboard or wheel fitment after collisions.
Request a digital frame measurement printout to confirm repair before purchase.

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Frame damage is often hidden by cosmetic repairs but impacts long-term safety.
Thorough inspection helps avoid buying unsafe vehicles with concealed frame flaws.

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