Template guide
Auction arbitration rebuttal letter: what to include (with template)
Once you've read the offer against your documents (see the step-by-step guide if you haven't), the next step is putting it in writing. Here's the structure that actually engages an arbitration department, and a template to adapt.
Why the letter has to cite the policy, not just the problem
An arbitration department gets a lot of claims that amount to "this seems unfair." Those go nowhere, because the reviewer isn't weighing fairness in the abstract. They're checking your claim against a specific written policy, and deciding whether it fits inside what that policy allows. A rebuttal that cites the actual clause, in the actual version that applies to your purchase, reads as a claim the reviewer has to answer on the merits rather than dismiss on a form response.
That means before you write a word, you need the auction's current arbitration policy for the date you bought the vehicle, not a policy you remember from a previous purchase or a general description someone gave you. Auctions revise these on their own schedule, sometimes more than once a year, and an outdated citation undercuts the whole letter.
The four parts of a strong rebuttal
1. Cite their own policy, by version
State the auction's arbitration policy, its effective date, and the specific section or clause that applies. If the policy establishes a document precedence, meaning it says which document governs when two conflict, name that hierarchy explicitly and show where your paperwork sits inside it. This does two things: it signals you've actually read the policy rather than sent a form complaint, and it removes the reviewer's easiest way to deflect, which is to say the claim was evaluated under the rules that actually apply and you're citing something else.
2. Their own estimate versus their own offer
Put their itemized estimate or offer breakdown next to the amount they actually paid or offered, line by line. If the offer is lower than their own priced-out estimate for the same repair, say so plainly and ask them to reconcile the two documents. This is often the single fastest way to move a stuck claim, because you're not asking them to trust a new number, you're asking them to explain a gap inside their own paperwork.
3. Scope: what the diagnosis requires versus what they priced
This is usually the real argument. A franchise (manufacturer) dealer's diagnosis describes a specific repair, sometimes because a partial fix can't rule out further internal damage without teardown, sometimes because the failure mode makes a component-level repair pointless. If the offer prices a smaller job than the one actually diagnosed, for example a repair kit priced instead of the full assembly the diagnosis calls for, state the mismatch directly: "the offer prices [X], but the diagnosis from [dealer] requires [Y], because [reason from the diagnostic]." Quote the diagnostic's own language where you can. Don't argue adjectives like "extensive" or "severe." Argue the specific repair named in the diagnosis against the specific repair priced in the offer.
4. Reimbursable costs, stated separately from the repair
Diagnostic fees, and in some cases reasonable transportation or towing costs tied directly to the claim, are commonly reimbursable under arbitration guidelines as "reasonable and documented expenses," separate from the repair line itself. Lost profit, reconditioning costs, and marketing costs are typically excluded outright and aren't worth asking for. List reimbursable costs as their own line, with a receipt or invoice attached to each one, rather than folding them into the repair total where they're easy to overlook or dispute.
Skip appeals to fairness, tone, or how the vehicle has affected your business. None of that maps to a policy clause, and it reads as padding around the parts of the letter that actually matter. Also skip arguing labor hours that already fall inside a published labor-time range for the job. If the hours are in range, that fight is not worth having; put the space toward the scope argument instead.
Fill-in-the-blank template
This is a starting structure, not a finished letter. Replace every bracketed section with your own facts, and delete anything that doesn't apply to your claim.
To: [Auction name] Arbitration Department Re: Arbitration Claim #[claim number] · VIN [vehicle VIN] · Sale date [MM/DD/YYYY] I am writing to request reconsideration of the arbitration offer dated [date of offer], in the amount of [$ offer amount], for the vehicle referenced above. 1. Policy cited This claim is governed by the [Auction name] Arbitration Policy, effective [effective date], Section [section number], which states: "[quote the exact clause language]." 2. Estimate versus offer Your own itemized estimate, dated [date], priced this repair at [$ amount]. The offer issued to me on [date] was for [$ amount], a difference of [$ gap]. I am requesting an explanation for this difference, or a revised offer consistent with your own estimate. 3. Scope of repair The diagnosis from [franchise dealer name], dated [date] (attached), states: "[quote the specific repair scope from the diagnostic]." Your offer prices [what was priced instead], which is a different repair than the one diagnosed. I am requesting the offer be revised to reflect the repair scope actually required, as documented above. 4. Reimbursable costs In addition to the repair itself, I am requesting reimbursement of the following documented expenses directly related to this claim: - Diagnostic fee: [$ amount], invoice attached - [Additional reimbursable line item, if any]: [$ amount], invoice attached Attached to this letter: - Bill of sale - Original condition report - Diagnostic report from [franchise dealer name] - Your itemized estimate/offer - Receipts for reimbursable expenses listed above I am filing this rebuttal within the arbitration window stated in your policy. Please confirm receipt and provide a timeline for review. [Your name] [Dealership name] [Contact information]
Attach the documents in the order the letter references them. A reviewer working through a stack of claims moves faster, and reads more carefully, through a letter where every claim in the text has a document sitting right behind it.
Want the specific clause language and citations pulled for you? The free checker reads your uploaded documents against the actual policy version for your purchase and shows you exactly what to cite, before you write a letter by hand.
Check your offer freeArbitration Desk is an informational and document-preparation tool, not a law firm. This guide and its template are not legal advice, and using them does not create an attorney-client relationship. You review and send everything yourself.