Insurance adjusters evaluate claims based on cost control, not complete repairs. Their evaluation of a body shop insurance claim reflects what the insurer is prepared to pay, not what a proper repair requires. They focus on visible damage, labor hours, and parts selection, and may push for aftermarket parts over OEM. At Royal Collision in Riverside, CA, we review your adjuster’s estimate, document what was missed, and manage insurer negotiations on your behalf.

What Does an Insurance Adjuster Actually Review?
An adjuster’s job is to quantify the claim cost, not advocate for your vehicle. When evaluating your claim for collision repair insurance, adjusters focus on four areas:
- Damage Scope: Does documented damage match the accident report and photos?
- Labor Hours: Do billed hours align with standard labor guides such as CCC or Mitchell?
- Parts Selection: Can aftermarket or salvage parts replace OEM (Original Equipment Manufacturer) components?
- Repair vs. Replace: Can a damaged panel be repaired rather than replaced?
What Adjusters Miss in a Desk Estimate
The most costly damage on later-model vehicles is often hidden: bent structural components, triggered airbag modules, or fault codes stored after impact.
Hidden structural damage and diagnostic trouble codes are rarely captured in a desk estimate. We perform a full disassembly and pre-scan with Autel diagnostic tools first.
Why Is Our Estimate Often Higher Than the Insurer’s?
Parts selection is where the cost gap appears most often. Insurers frequently specify aftermarket crash parts to cut costs. A 2018 study by the Insurance Institute for Highway Safety (IIHS) found that some aftermarket structural crash parts can fit poorly and may not meet the same structural and crashworthiness standards as original manufacturer parts (IIHS Advisory 42). On later-model vehicles with engineered crumple zones and integrated safety systems, that matters more than on older cars.
| Factor | Insurer’s Initial Estimate | OEM-Based Repair |
| Parts source | Aftermarket or salvage parts | Original Equipment Manufacturer (OEM) |
| Repair procedures | General industry practice | Manufacturer-published procedures |
| Warranty coverage | None — insurers do not warranty repairs | Royal Collision Limited Lifetime Warranty |
What Happens When Our Estimate Doesn’t Match the Adjuster’s?
When our documented estimate exceeds the adjuster’s figure, we submit a supplement. We submit that revised claim as part of the auto insurance claim repair process, supported by photos, Autel pre-scan results, and the applicable OEM repair procedures. The insurer is required to respond.
A supplement covers damage the adjuster did not see. We handle the submission and keep you updated throughout.
Your Right to Choose Your Repair Shop
California Insurance Code Section 758.5 gives you the legal right to choose your own repair shop. Royal Collision carries no Direct Repair Program (DRP) agreements, so no insurance company influences how we repair your vehicle. Roughly 95% of our customers pay only their deductible, even when OEM parts are required.

What Should You Ask Before Authorizing Any Repair?
Three questions to ask before signing off on any collision repair in Riverside, CA:
- What parts will be used?
OEM parts match original specifications for fit, function, and crash safety. Aftermarket alternatives often do not.
- Who handles the insurance communication?
We manage that process at Royal Collision. You are not expected to negotiate yourself.
- Does the shop warranty the work?
Insurers do not warranty repairs. We do. Our Limited Lifetime Warranty covers all repairs and paint for the full period of your vehicle ownership.
Frequently Asked Questions
Can an adjuster require my shop to use aftermarket parts?
No. An adjuster can list them in the estimate, but California law does not require your shop to accept non-OEM parts. We document the dispute and push back directly.
What if my insurer says I must use one of their preferred shops?
You are not required to. California Insurance Code Section 758.5 gives you the right to choose any insurance claim body shop in California.
How long does a supplement take to resolve?
Most supplements receive a response within a few business days. When we manage the auto insurance claim process, things move faster than when you handle it alone.
Get a Collision Repair Estimate You Can Trust From Royal Collision
Contact us at (951) 276-4421 or ryan@royalcollisionriverside.com. We assess your vehicle damage, negotiate with your insurer, and provide a transparent estimate for your insurance claim at our body shop. Our team puts your vehicle’s integrity and safety first, not cost-cutting for insurers.