Dealers were surprised this Cadillac wasn’t totaled — and its nearly 40% value loss reflects just how seriously frame damage gets treated at trade-in. A Cadillac CTS Luxury V-6 RWD Sedan with 34,089 miles was involved in a right side collision that caused $14,618.27 in damage in Maricopa County, Arizona. The vehicle stayed drivable and the air bags never deployed, but the impact left structural damage that changed how dealers valued it going forward. After the owner hired an independent auto appraiser serving Maricopa County and filed a third-party inherent diminished value claim, The St. Lucie Appraisal Company was retained to quantify exactly how much that repair history cost.
The result: an average diminished value deduction of 39.17%, or $9,792.50 off the vehicle’s pre-loss Fair Market Value of approximately $25,000.00.
How the Diminished Value Was Determined
To reach that figure, St. Lucie Appraisal contacted six Cadillac dealerships across Arizona and asked their sales professionals to weigh in on the vehicle’s specific repair history. The opinions of six unbiased professional sales representatives at recognized Cadillac dealerships were based on the same case file: year, make, model, mileage, pre-accident condition, color, factory options, date of loss, the nature of the repaired damage, and how the repairs were carried out. Dealers were told the vehicle had been properly repaired and were asked to base their opinions on personal knowledge of the Cadillac market and access to auction results.
The estimates were blunt about what frame damage means for a car like this. One sales representative said the vehicle would most definitely have to go to auction, estimating close to a 50% loss in trade because of the frame damage. Another representative agreed it would have to go to auction, noting the exact outcome depends on what the market is doing that day, but put the loss at around 50% as well — adding that he was surprised the vehicle hadn’t been totaled given the extent of the damage. Averaged across all six dealerships, the deduction came out to 39.17%.
These opinions reflect what actual Cadillac dealerships indicated they would deduct from the vehicle’s trade-in value after reviewing its repair history.
No LKQ (used) or aftermarket parts were used in the repair, so none were factored into the diminished value calculation — a detail that matters, since aftermarket parts can sometimes deepen a diminished value deduction beyond what collision history alone would cause.
Why Repaired Vehicles Lose Value
This case illustrates a pattern St. Lucie Appraisal sees consistently, especially when frame or structural damage is involved: once a vehicle has been in a collision and repaired, buyers generally pay less for it than they would for an identical vehicle with a clean history — regardless of how well the repair was performed. Presenting a diminished value claim and following it through to a satisfactory conclusion is a daunting task for the average person, which is why a comprehensive, independently prepared Diminished Value Report is central to a successful claim.
As part of this appraisal, The St. Lucie Appraisal Company contacted Cadillac dealerships serving Arizona and neighboring markets to determine how this specific repaired vehicle would be valued in the wholesale marketplace, comparing its condition before and after the collision.
Description of damage: Non-disabling collision damage to the right side, including damage to structural components and no air bag deployment. Repair cost: $14,618.27.
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Questions & Answers About Automobile Diminished Value
What is diminished value?
Diminished value is the difference between what a vehicle was worth before an accident and what it’s worth after being repaired. Even a flawless repair typically doesn’t restore a vehicle to its pre-accident market value, because the collision now shows up in its history.
Why would a vehicle with this much damage not be declared a total loss?
A total loss determination depends on whether the repair cost exceeds a set percentage of the vehicle’s value, not on whether the damage is structural. This Cadillac’s $14,618.27 in repairs was well under its $25,000 Fair Market Value, so it was repaired rather than totaled, even though a dealer noted he was surprised it wasn’t.
Does auction pricing vary day to day?
Yes. One dealer in this case specifically noted that a frame-damaged vehicle’s auction value depends heavily on what the market is doing on the day it’s sold, which is part of why appraisers average multiple independent dealer opinions rather than relying on a single estimate.
How is diminished value calculated in an appraisal like this one?
St. Lucie Appraisal doesn’t use formulas or online valuation shortcuts. Instead, appraisers gather independent opinions from multiple dealerships familiar with the vehicle’s make and local market, then average those figures to arrive at a supportable number.
What does a Diminished Value Report cost, and how do I order one?
An Automobile Diminished Value Report is $275.00. You can pay by credit card or PayPal using the payment button below, or by calling 772-359-4300. Before making your payment, email the body shop estimate or insurance company appraisal to contact@stlucieappraisal.net.
I drive a Tesla or another exotic vehicle — does this process still apply?
The general approach is similar, but rates differ. Tesla and other exotic car owners should call for specific rates.
Is this only for Maricopa County vehicles?
This case was based in Maricopa County, Arizona, and St. Lucie Appraisal serves Phoenix, Tucson, Mesa, Chandler, Glendale, Gilbert, Scottsdale, Tempe, Peoria, Surprise, San Tan Valley, Yuma, Avondale, Goodyear, Casa Adobes, Flagstaff, Buckeye, Lake Havasu City, Catalina Foothills, Casa Grande, Maricopa, Sierra Vista, and the rest of Arizona.
Click on the payment button above to pay by Credit Card or Paypal. The fee for an Automobile Diminished Value Report is
$275.00. You may also make your Credit Card Payment by telephone, call 772-359-4300.
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