If your car has been totaled and your insurance company sent you a CCC One Market Valuation Report, I want you to know something upfront: there is a very good chance that report has errors in it. Not small, insignificant errors either. I’m talking about mistakes that can cost you thousands of dollars.

I review these reports every single day. I’ve seen the same errors show up across every major insurance company, including State Farm, Allstate, Geico, Progressive, USAA, Nationwide, you name it. The errors are so consistent that at some point you have to stop calling them mistakes and start asking whether the system is designed this way.

Here are the most common errors I see, how to spot them in your own report, and what you can do about them.

Error #1: Wrong Trim Level or Missing Options

This is probably the most common error I encounter, and it’s one of the most costly. Your vehicle’s trim level determines its value more than almost any other factor. A base model and a fully loaded version of the same car can be $5,000 to $15,000 apart in value, and CCC reports get the trim wrong more often than you’d think.

I had a client with a 2006 Acura RSX Type S. The CCC report used comps that were base model RSXs instead of the Type S and mixed in options from different trim levels. It read like someone selected vehicles based on the model name without verifying whether they were actually comparable. The insurance company’s initial offer reflected this mismatch and was thousands below what the Type S was actually worth.

Another case involved a 2018 Tesla Model 3 Performance. The insurance company’s report used Long Range AWD models as comps instead of the Performance trim. Those are very different vehicles with very different values. On top of that, the report completely missed features like Full Self-Driving and lifetime Premium Connectivity that added significant value to my client’s car.

Error #2: Ghost Comps That Don’t Actually Exist

This one should make your blood boil. CCC reports list comparable vehicles that were supposedly for sale or recently sold at specific dealerships. But when you try to verify those listings by Googling the dealership, searching the VIN, and looking for the actual ad, some of them simply don’t exist.

I’ve seen reports list a dealership in a small town that doesn’t have a single car dealer in it. I’ve seen comps where the VIN traces back to a vehicle that was owned by the same person for years. It was never for sale at the price listed in the report. These aren’t comparables. They’re phantom data points being used to justify a lower valuation.

One of my clients contacted the actual owner of a vehicle that was listed as a “comparable” in their CCC report. The owner confirmed they had owned the car since long before the date the report claimed it was sold at a dealership. The comp was fabricated, or at the very least, the data was so stale and inaccurate that it had no business being used to determine anyone’s settlement.

Error #3: Condition Ratings That Don’t Match Reality

This is the one that gets personal for me because I’ve seen it devastate people who took exceptional care of their vehicles.

I had a client, a widow who had recently lost one of her daughters, whose 2012 Toyota Corolla LE was totaled in a snowstorm. This car was babied. Clean title, no accidents, non-smoking, non-pet, regularly serviced, new AC compressor, new alternator, new tires with 26,000 miles of warranty remaining. The interior was near-excellent. She had receipts for everything.

State Farm’s CCC report rated the car’s condition as “Average.”

Average.

A pristine, meticulously maintained car with complete service records was rated the same as any random 2012 Corolla on the road. That single word, “Average” instead of “Above Average” or “Excellent,” could have cost her hundreds or even thousands of dollars in value adjustments.

She went and personally visited two of the comps listed in the report. One had a cracked bumper repaired with dealer putty and spray paint, a broken dash compartment, and a clunking engine. The other had mismatched paint, a replacement hood rusting underneath, and was suspected of being a title-washed vehicle transported cross-country to avoid a salvage designation. These cars in clearly inferior condition were rated as more valuable than hers.

Error #4: Inconsistent Mileage Adjustments

CCC reports adjust comparable vehicles’ values based on mileage differences between the comps and your car. In theory, this makes sense because a car with fewer miles is worth more. But the per-mile adjustment rates CCC uses are often inconsistent and almost always below industry standards.

I’ve seen reports where the mileage adjustment varies by 30% or more between different comparables in the same report. If the market data supports different adjustment rates, that’s one thing. But when there is no explanation for why one comparable is adjusted at one rate and another at a completely different rate, it’s worth asking questions. The adjustment methodology should be consistent and supported by the market, not arbitrary.

Error #5: Geographic Outliers and Salt Belt Comps

Where a comparable vehicle comes from matters a lot. A truck from Arizona and an identical truck from Massachusetts are not the same vehicle when it comes to condition, because one has spent winters dealing with road salt and the other hasn’t.

I had a case with Allstate involving a 2011 Lexus GX 460. The insurance company’s appraiser used a comp from Massachusetts. I had the dealer where that comp was listed send me photos of the underside. It was rustier than an old shipwreck. This vehicle was in objectively worse condition than my client’s rust-free Lexus, but it was being used to drag down the valuation.

Once I presented the photographic evidence of the rust damage, the opposing appraiser agreed to throw that comp out. That single change bumped the valuation up significantly.

CCC reports are supposed to use local comparables, but “local” can be stretched pretty far. And sometimes they’ll tell you that you can only use comps within a 50-mile radius while they pull comps from across the country. Pay attention to where the comparables are located.

Error #6: Unexplained Condition Adjustments

Beyond the condition rating on your vehicle, CCC reports also apply “condition adjustments” to the comparable vehicles. These are dollar-amount deductions that are supposed to account for differences in condition between the comps and your car. The problem is that these adjustments are often identical across all comps and are never explained.

One of my clients had a negative condition adjustment of $1,934 applied to their valuation with no explanation whatsoever. When they asked the adjuster to justify the number, they got nowhere. After weeks of the adjuster stalling, which I believe was a deliberate attempt to delay until my client gave up, they found me. We invoked the appraisal clause and settled for $26,766 versus the original offer of $21,166.

If every comparable in your report has the exact same condition adjustment applied to it, that’s a red flag. Real vehicles in different locations and conditions would not all require the identical dollar adjustment. It suggests the number is algorithmic, not based on any actual assessment of the individual vehicles.

Error #7: Dealer Preparation Deductions

Some CCC reports include a flat “dealer preparation” or “dealer reconditioning” deduction across all comparable vehicles. The logic is that a dealer would need to spend money preparing a vehicle for sale, so the retail price should be reduced by that amount.

There are two problems with this. First, the deduction is often a flat amount applied uniformly, with the same dollar figure for every comp regardless of condition, location, or dealer. Second, the amount is never documented with actual receipts or invoices. It’s a made-up number designed to bring the overall valuation down.

Your insurance policy says they owe you the actual cash value of your vehicle, meaning what it would cost to replace it on the open market. That means retail prices, not some hypothetical wholesale-minus-reconditioning figure.

What to Do When You Find Errors

First, document everything. Write down every error you find, with specific page numbers and details from the report. Take screenshots. If you can visit comps in person, take photos. If you find that a comp doesn’t exist, document your search process.

Second, present your findings to your adjuster in writing. Don’t call. Get everything in email so there’s a paper trail. Be specific and factual. “Comp #3 is listed as a base model but my vehicle is the Sport trim” is much more effective than “your report is wrong.”

Sometimes the adjuster will make corrections and bump the offer. But in my experience, more often than not, the response is some version of “the valuation has been reviewed and is accurate.” If that happens, you’ve documented everything you need to support an appraisal clause dispute.

If you’re not sure what to do next, I recommend reading my guide on how to dispute a CCC One market valuation report, where I walk through the entire process from reviewing the report to gathering evidence and challenging the insurance company’s valuation.

Frequently Asked Questions