After a collision, the visible damage — dents, broken lights, paint scrapes — is obvious. What's less obvious is what happened to the vehicle's structure underneath. Frame and unibody damage is one of the most serious consequences of a collision, and it can exist even when the car looks fine on the outside.
Here are five warning signs that your vehicle's frame may have been compromised — and why it matters.
Sign 1: The Car Pulls to One Side
Drive on a straight, flat, empty road and briefly release the steering wheel. If the car drifts noticeably left or right, something is wrong with the alignment — and after a collision, that often means frame damage.
Normal alignment issues (from potholes or wear) cause gradual drift. Post-collision pulling tends to be more pronounced and immediate. If this appeared after your accident, have the frame inspected before assuming it's a simple alignment adjustment.
Sign 2: Uneven or Rapid Tire Wear
Check your tires after any significant collision. If one tire is wearing faster than the others, or if the wear pattern is abnormal — heavier on the inside or outside edge — the vehicle's geometry may be off.
Wheels that aren't properly aligned with each other scrub the tire rubber with every rotation. Beyond the cost of replacing tires sooner, this is a symptom of a structural problem that won't fix itself.
Sign 3: Doors, Hood, or Trunk That Won't Align Properly
Try opening and closing all your doors, the hood, and the trunk lid. They should open and close smoothly, fit flush with the body, and latch without extra force.
If a door suddenly requires more effort to close, if there's a gap where there wasn't one before, or if a panel no longer sits flush — the vehicle's body may have shifted. This is particularly common after side impacts and front-end collisions where structural pillars absorb force.
Don't dismiss this: Doors that don't close properly indicate structural misalignment that affects how your vehicle's safety cage performs in a future collision.
Sign 4: Visible Damage Under the Vehicle
Get down and look at the underside of your vehicle — especially the frame rails that run along the length of the vehicle. Look for:
- Bending or crumpling in the frame rails
- New cracks in the paint or undercoating
- Components that appear shifted from their normal position
- New fluid leaks originating from an impacted area
On unibody vehicles (most modern cars and crossovers), there isn't a traditional separate frame — the body structure itself provides rigidity. Damage to the floor pan, firewall, or strut towers is structurally equivalent to frame damage on a truck.
Sign 5: Vibration or Shaking at Highway Speeds
If your vehicle shakes at highway speeds after a collision — especially if it didn't before — something is out of alignment or balance. This could be as minor as a bent wheel rim, but it can also indicate frame damage that has thrown the vehicle's geometry off.
New vibrations after an accident tend to worsen over time and accelerate wear on suspension components, tires, and drivetrain parts.
What to Do If You Notice These Signs
Bring your vehicle in for a frame inspection. At Marquis Auto Body, we use laser dimensioning equipment to measure your vehicle's actual dimensions against factory specifications — detecting even subtle deviations that aren't visible to the naked eye.
A frame inspection is free. If we find damage, we'll show you the measurement results and explain exactly what the repair involves. If we don't find damage, you'll have peace of mind.
Don't drive a vehicle you suspect has frame damage. The engineered crumple zones and safety cage your vehicle was designed with may not work as intended if the structure has been compromised.
Already had your vehicle repaired elsewhere? If you're not confident the frame was properly assessed and corrected, bring it in for a second inspection. It costs you nothing and could reveal something important.