Free Auto Repair Invoice & Mechanic Estimate Generator
Generate professional mechanic work orders and repair bills with VIN number, vehicle mileage, parts markup, and labor hours.
Clients can scan the QR code with their mobile phone camera or click the payment link to pay immediately with Apple Pay, Google Pay, or Credit Card.
INVOICE
Ref: #INV-AUTO-001
Apex Mobile Auto Care LLC
service@apexmobileauto.com
(317) 555-9201
4800 Speedway Blvd, Indianapolis, IN 46222
ASE Certified Master Tech | EIN: 35-9821049
David Miller (2021 Ford F-150)
david.miller@gmail.com
712 Oak Ridge Ct, Carmel, IN 46032
2026-10-29
2026-11-12
| Description | Qty | Unit Rate | Amount |
|---|---|---|---|
| On-site OBD2 Diagnostic & charging system load test | 1 | $110.00 | $110.00 |
| Motorcraft OEM Alternator (200A heavy-duty) | 1 | $320.00 | $320.00 |
| Labor: Remove & replace alternator, tensioner belt check (1.8 hrs) | 1.8 | $125.00 | $225.00 |
| Interstate AGM Battery (Group 48 - 760 CCA) | 1 | $215.00 | $215.00 |
https://pay.apexmobileauto.com/workorder
2026 US Auto Repair Labor & Diagnostic Benchmarks
Aggregated trade data for itemized contractor billing.
| Service / Work Category | Typical Rate | Billing Practice |
|---|---|---|
| Independent Garage Labor Rate | $95 – $160 / hr | Dealerships average $175-$250/hr |
| Mobile Mechanic Diagnostic Fee | $95 – $150 | On-site OBD2 scan and visual inspection |
| Front Brake Pads & Rotors (per Axle) | $350 – $650 | Includes ceramic pads, new rotors, and brake bleed |
| Alternator / Starter Replacement | $450 – $900 | Includes remanufactured OEM alternator and labor |
Field-Tested Invoicing Clauses
Click any clause to append directly into your invoice terms.
“New OEM & aftermarket parts backed by 12-month / 12,000-mile limited warranty. Labor warranted for 90 days.”
“Completed vehicles not picked up within 48 hours of notice subject to $45/day outdoor storage fee.”
“Vehicles released only upon settlement of invoice in full. Mechanics lien retained per state vehicle code.”
Auto Repair Invoicing Best Practices
Always Record VIN & Mileage
State automotive repair bureau regulations require Vehicle Identification Number (VIN) and current odometer reading on every invoice.
Separate Parts from Book Time
List standard Mitchell or AllData book time hours multiplied by your shop labor rate so customers see industry-standard calculations.
Get Written Authorization First
Never exceed estimated cost by more than 10% without documented phone/text approval from the vehicle owner.
Frequently Asked Questions
What is legally required on an auto repair invoice?
Shop license / BAR number, customer name, vehicle year/make/model, VIN, odometer reading, parts brand/grade, and written customer authorization.
How to handle core charges?
List the core deposit fee (e.g. $40 battery/alternator core) as a separate line, then show a matching credit when returned.
Can mobile mechanics use this?
Yes! Mobile mechanics can input on-site service fees, travel mileage, and parts directly from their phone and email the PDF instantly.
Is sales tax charged on auto labor?
In most states (like California, Florida), labor is non-taxable on auto repairs, while physical parts and shop supplies are taxable.