Mauro D Andrea
Are you looking for car appraisal in Los Angeles, a diminished value expert, or a licensed auto appraiser to provide an accurate market value on a vehicle you want to buy or sell? Whether you need a licensed appraiser for an auto total loss appraisal, diminished value calculation, or to act as an automotive expert witness or mediator, we can help. For an evaluation of an automobile for any reason. The Auto Mediator offers experience and skill.

No matter where you are in the United States, we can provide a total loss appraiser. With 25 years in the auto business, our expertise includes a variety of services.

In the case of car accidents or fraud cases, we provide appraisals for inherent diminished value and total loss.

Perhaps you need an auto appraisal for a divorce case or estate disbursement. If issues become too complicated between auto appraisers in your total loss case, we offer “Umpire  Services” and mediation provided by staff trained at The Straus Institute for Dispute Resolution Pepperdine School of Law. 

If required, we can act as expert witnesses for legal clients. Umpire services are specific to total loss cases only.

After more than two decades, we know exactly what to look for when assessing a vehicle. 

We keep up with industry best practices, and we have the specialized tools at our disposal to provide accurate and dependable evaluations. We work smart to give you the most accurate appraisal.


Auto Appraisals Services

Diminished Value

Diminished Value (DV) is the loss in a vehicle’s market value as a result of having been in an accident and repaired. The amount of a diminished value claim depends on the severity of the damages endured and the quality and preciseness of the repair.

Even if a vehicle is restored to its original condition, it will almost certainly lose value once it has been in a wreck. Buyers won’t pay full market value once they discover there’s an accident in its history.

Filing a diminished value claim with the at-fault driver’s insurance company can allow you to recover the difference between what a car was worth before an accident and what it’s worth after.

It’s up to you to present documentation about the wreck and make your case for diminished value. An accurate appraisal from Auto Mediator can help successfully prove your vehicle’s value.

Total Loss

After a car wreck, your insurance company will weigh the cost of estimated repairs against its value. If repairing it would be higher, the vehicle will be declared a total loss.

In a total loss case, the insurance company will determine your car’s pre-accident value and offer a settlement. They calculate the amount based on make, model, mileage, and the car’s condition.

If you feel the settlement you’ve been offered is too low, you don’t have to accept it. You have the right to contest it.

A fully customized documented report from a professional appraiser will create a rock solid foundation to prove your car is valued correctly. Insurance companies have a harder time disputing a vehicle valuation report from a non-biased licensed appraiser.

Expert Witness

Expert witnesses can be critical in cases where a car’s value is in question. Whether it’s a Lemon Law trial, a dispute with an insurance company over a diminished value or total loss settlement, dealer fraud, factory recall, warranty dispute, or prior accident detection, Auto Mediator can provide expert witness to prove your client’s case.

We have been able to provide the most amazing results – and for good reason – at the discovery stage we can ensure that your clients are able to document real damage or the bogus nature of fraudulent claims.

With more than two decades in the auto valuation business and experience in the auction side of the auto industry, we have the knowledge to evaluate vehicle value accurately and can explain the nuances of complex cases with clarity in a court of law.


Expert Witness

Most attorneys are unaware of the number of places that they can discover key documents and other critical information that are necessary to properly evaluate a claim.


Diminished Value


Anywhere in the United States


Diminished Value

If you had two of the same cars placed side by side, one had a prior accident, the other did not. Would they both worth the same?


Features & Benefits

  • 25 years of experience successfully operating in largest car market in U.S.
  • Trained at the best program in the U.S. for Mediation and Dispute Resolution.
  • Certified by IAAA, the nation’s only recognized auto appraisal organization.
  • Hired as “top-gun” expert witness by some of the largest U.S. Auto Manufacturers, Department of Justice, Auto Auctions.

We are the forefront of the automotive appraisal and total loss claims industry.


From Our Clients

The amazing comprehensive and detailed appraisal report he wrote, I was able to get reimbursed over $10,000 dollars for Loss of Use on top of what I received for my Diminished Value Claim.

Aivi P.


Our Tesla rear ended, Steve’s Report recovered $9,000…Steve provided guidance throughout and was key to our getting the settlement.

Mike M
– San Pablo, CA


Mr. Proto was called to testify in-front of a jury. Mr. Proto's testimony helped us secure a verdict of over $40,000 for the client. I would recommend his services to anyone dealing with diminished value or loss of use.

Michael H
– Hafif Stonehouse law group


Steve’s deposition testimony was instrumental in our Lemon Law case. He was detailed, backed up his assertions with data and confidently knew his facts which was very helpful.

Carey Wood
– Lemon Law Experts