Insurance Estimate Too Low? How to Dispute a Car Repair Estimate | Otto
Otto Claims Guide · 2026

Insurance Estimate Too Low?
How to Push Back

Upload a photo for a free repair estimate in about 30 seconds — a second number that doesn't come from the insurer. How to use it is below.

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So why is the insurance estimate so low? Usually because it was written before anyone looked behind the panels. First estimates price what's visible; the rest gets added later through a process called a supplement. Sometimes the number really is short — on labor, parts or paint. Below: how to tell which it is, the rights you have, and the escalation steps if the insurer won't move.

Otto Research Team
·
October 2026
·
Updated Quarterly
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General Information — Check Your Own Policy
The short answer
  • A low first estimate is normal. Hidden damage gets added later as a supplement once the shop takes it apart.
  • You choose the shop, and the shop negotiates the supplement with the insurer directly.
  • Get an independent number so you can see where the gap is: labor, parts, paint or missed damage.
  • Stuck on your own policy? Most policies have an appraisal clause that settles disputed amounts.
01
Why the First
Estimate Comes In Low
Four usual reasons. The first is normal; the other three are worth challenging.
1
Hidden damage not counted yet
The normal one
Adjusters estimate what they can see. Brackets, absorbers and sensors behind the panels show up at teardown.
2
Labor rate below local shops
Common in disputes
The estimate uses a rate your shop doesn't charge. Ask what rate it assumes and compare.
3
Aftermarket or used parts
Instead of factory parts
Cheaper parts lower the number. Check the estimate's parts list — many states require insurers to identify non-original parts.
4
Missing steps
Paint, blending, calibration
Blending paint into the next panel or recalibrating sensors left off. These add real money.

Get a second number.

Upload a photo of the damage. Otto returns a free repair cost range in about 30 seconds — independent of any insurer.

Get My Free Estimate →
02
How Supplements
Work
A supplement is the shop's request for more money once it finds damage the first estimate missed. It's routine.
1
The shop takes the damaged area apart
That's when hidden damage shows up. Expect it on almost any hit harder than a scrape.
2
The shop documents it and sends the supplement
Photos, parts and labor. The insurer may re-inspect before approving.
3
The insurer pays the difference
Usually straight to the shop. You shouldn't be handed the gap for covered damage.
4
The timeline stretches
Approval can add days. Ask the insurer about extending your rental if one is involved.
⚠️ A check that's too small isn't the final word
If the insurer paid you directly and the shop's price is higher, send the insurer the shop's itemized estimate and ask them to adjust. Don't sign anything calling the claim settled until the repair price is agreed.
03
Your Rights
in the Process
Four things insurers rarely volunteer.
The shop
You choose who repairs it
In California and most states you can use any licensed shop. An insurer's preferred network is a recommendation, not a requirement.
The parts
Know what's on the estimate
Your policy decides whether factory parts are covered. Ask in writing which parts are aftermarket, used or factory.
The paper trail
Get it all in writing
The estimate, the rate, the parts list, every denial. Disputes are won on documents, not phone calls.
Someone else caused it
Their insurer owes the repair
A third-party claim covers a proper repair. See accidents that weren't your fault.
04
If the Insurer
Won't Move
Escalate in order. Most disputes end at the first or second step.
1
Put the gap in writing
Line by line: the rate, the parts, the missed steps. Attach the shop's estimate and photos.
2
Ask for a supervisor or re-inspection
A second adjuster often resolves it. Ask the shop to be there when they look at the car.
3
Invoke the appraisal clause
On your own policy, most allow each side to hire an appraiser, with an umpire breaking ties. Check your policy for the exact terms and costs.
4
File a complaint with your state insurance department
Free, and insurers must respond. In California, that's the Department of Insurance.

Car totaled instead? Disputes over the car's value work differently — see our total loss guide. And once it's repaired, the drop in resale value may be claimable too: see diminished value.

05
Car Not Fixed Properly
After the Claim?
Paint that doesn't match, panel gaps, warning lights, a door that sticks. You have options.
First
Go back to the shop
Most shops warranty their work. Photograph the problem and ask for it in writing.
If the insurer chose the shop
Tell the insurer
Many insurers stand behind repairs at their network shops. Ask whether yours does.
For proof
Get an independent inspection
Another shop's written opinion. Structural concerns especially — see signs of structural damage.
If it's not resolved
State complaint
Your state insurance department, and in some states an auto repair bureau. Keep every invoice.
06
Common
Questions
Why is my insurance repair estimate so low?
Usually because the first estimate only prices damage that's visible before the car is taken apart. It can also be short because it assumes a lower labor rate than local shops charge, uses aftermarket or used parts, or leaves out steps like paint blending and sensor calibration.
What is a supplement in auto body repair?
A supplement is a request the shop sends the insurer for additional money once it finds damage the first estimate missed, usually after taking the damaged area apart. It's a routine part of most collision repairs.
What can I do if the insurance estimate is too low?
Get an independent repair estimate, let your chosen shop submit a supplement with photos, put the specific gaps in writing, ask for a supervisor or re-inspection, and if it's your own policy, consider the appraisal clause. A complaint to your state insurance department is the next step.
Can I choose my own body shop?
Yes. In California and most states you can take the car to any licensed repair shop. An insurer's preferred network is a recommendation, not a requirement.
What is the appraisal clause in auto insurance?
A provision in many auto policies for settling disputes over the amount of a loss. Each side hires an appraiser, and if they disagree an umpire decides. It applies to claims on your own policy; check your policy for the exact terms and how costs are split.
Does insurance have to pay for OEM parts?
It depends on your policy and state. Many policies allow aftermarket or used parts, and many states require the insurer to identify non-original parts on the estimate. Ask the insurer in writing which parts are being used.
What if my car wasn't fixed properly after an insurance claim?
Go back to the shop first, since most warranty their work. If the insurer chose the shop, tell the insurer — many stand behind repairs at their network shops. An independent inspection and a complaint to your state insurance department are the next steps.
Should I accept the insurance check if it's less than the shop's estimate?
Send the insurer the shop's itemized estimate and ask for an adjustment before you treat the claim as settled. Hidden damage found during the repair is normally handled through a supplement.