Auto Repair Estimate Template
An auto repair estimate should identify the vehicle, describe the diagnosis, and break the work into parts and labour with a total. Note that additional authorisation will be sought if the final cost would exceed the estimate, and record how the customer wants to be contacted. In many states a written estimate and re-authorisation above a threshold are legal requirements. Build one free below.
Repair estimates carry more legal weight than most trade documents. A large number of states require a written estimate before work begins and fresh customer authorisation before the final bill can exceed it by more than a set percentage or dollar amount. The exact figures vary, so check the rule where you operate, but the underlying habit is the same everywhere: get the number in writing, and go back before you pass it.
What an auto repair estimate should include
| Section | What it sets out |
|---|---|
| Vehicle | Year, make, model, VIN and odometer at intake |
| Complaint & diagnosis | What the customer reported and what you found |
| Parts | Each part with grade, new, remanufactured or used |
| Labour | Book time or hours per operation at the shop rate |
| Diagnostic fee | Whether it is credited if the repair proceeds |
| Authorisation | Signature, contact method, and the overage threshold |
The authorisation line
This is the part that protects the shop. An estimate that ends with a total and nothing else leaves the question of what happens when a seized bolt turns two hours into five. An estimate that says how contact will be made, and what the customer agreed to, answers it before it happens.
In practice that means recording a phone number or email, the customer’s signature or recorded verbal approval, and a plain sentence: work exceeding the estimated total will not proceed without further authorisation. Where your state sets a specific threshold, state it.
A worked example
- Vehicle: 2018 Honda Accord · VIN on file · odometer 78,430 mi
- Complaint: grinding noise on braking, front
- Diagnosis: front pads worn to backing plate, rotors scored beyond service limit
- Front brake pads, new OE-equivalent: $120.00
- Front rotors ×2, new: $180.00
- Labour, 2.5 hrs @ $110.00/hr: $275.00
- Shop supplies and disposal: $23.00
- Estimated total $598.00 plus tax
- Diagnostic fee $95.00, credited against this repair if approved
- Authorisation: customer to be contacted on file number before any work exceeding the estimated total
What gets shops into trouble
- Verbal estimates only. If a dispute reaches a regulator, the written document is the whole case.
- Additional work done without re-authorisation. The most common complaint against repair shops, and often a statutory violation.
- Diagnostic fee terms unclear. Say whether it is credited if the customer proceeds, and whether it is payable if they decline.
- Part grade unstated. A customer expecting new parts who receives used ones has a legitimate grievance even if the price was fair.
Create an auto repair estimate free
Enter the vehicle, diagnosis, parts, labour and authorisation terms, then download a clean PDF for the customer to sign. No account, no watermark.
Work approved and completed? Bill it with the auto repair invoice template, which carries the same vehicle and part-number detail through to the final document.
Related templates
- Auto repair invoice template
- Towing invoice template
- Moving estimate template
- All templates · Quote vs estimate vs invoice
Frequently asked questions
Is a written auto repair estimate legally required?
In many states, yes. Shops must provide a written estimate before beginning work above a certain value, and must obtain fresh authorisation before exceeding it by more than a defined percentage or amount. The thresholds differ by jurisdiction, so confirm the rule that applies to your shop rather than assuming a common standard.
What happens if the repair costs more than the estimate?
You should stop and contact the customer for authorisation before continuing. Recording on the estimate how the customer wants to be reached, and noting the approval when it is given, is what turns a difficult final invoice into a documented and agreed one.
Should the diagnostic fee be credited if the customer approves the repair?
Many shops credit it, and it is a reasonable goodwill position, but either approach is fine as long as the estimate says which applies. Ambiguity here is a frequent source of complaints, particularly when a customer declines the repair and still receives a bill.