How to use the Auto Repair Invoice Generator
- Enter your business name and address, and add your company logo if you have one.
- Add your client's details, an invoice number, and the date.
- Edit the pre-filled parts & labor: adjust descriptions, quantities, and prices, and add or remove rows to match the job.
- Set any tax or discount, choose your currency, then click Download to save a professional PDF.
Who it's for
Mechanics, garages, and mobile auto technicians billing diagnostics, parts, and labor, who need to record the vehicle registration and mileage for warranty and service history.
What an auto repair invoice is
An auto repair invoice is the document a garage or mechanic gives a customer to set out the work done on their vehicle and what is owed. It lists the diagnostic time, the labor, and every part supplied, tied to a specific vehicle. Beyond getting you paid, it is the record both sides rely on for warranty claims and it forms part of the vehicle's service history, so a clear, itemized invoice protects you and adds value for the customer at resale.
What an auto repair invoice typically includes
It depends on the job, but a clear auto repair invoice usually includes:
- Your garage name, contact details, and any registration number your region requires
- The customer's name and the vehicle details: registration, make, model, and mileage at the time of service
- A unique invoice number and the date
- The diagnostic or inspection fee, if you charge one
- Labor as hours times your shop rate
- Each part supplied, ideally on its own line for larger jobs
- Consumables, shop supplies, and any waste disposal or sundries
- The subtotal, any tax, the total due, your payment terms, and the parts and labor warranty
Common line items on an auto repair invoice
The exact wording should match the work you actually did. Common examples that may appear on an auto repair invoice include:
- Diagnostic or inspection fee
- Labor (hours at your shop rate)
- Parts supplied, such as pads, discs, filters, belts, or a battery
- Consumables and fluids, such as oil, coolant, and cleaner
- Shop supplies or sundries
- Waste disposal or environmental charge
- Sublet work, such as specialist machining sent out to another shop
- A deposit already received, shown as a line that reduces the balance, for special-order parts
List each part and charge separately so the total is easy to follow. This generator comes pre-set with diagnostic, labor, parts, and disposal lines that you can rename, duplicate, or remove to match the job.
Recording the vehicle details
The one thing that sets an auto repair invoice apart from any other is the vehicle. Record the registration, make, model, and the mileage at the time of service on every invoice, and add the VIN for larger jobs. Mileage establishes when the work was carried out, which matters if a customer later says a repair failed sooner than it did, and it feeds the vehicle's service history that supports its value at resale. Keeping your copy of the invoice with the job card means you can answer a warranty query months later without asking the customer to prove anything.
Keeping your records organized
Save a dated PDF of every invoice, organized by customer or registration and by year, with the parts and mileage recorded. It makes your bookkeeping and tax return easier, it lets you honor a warranty without argument, and it means a returning customer's history is at your fingertips. A simple folder per year is usually enough.
Create a professional auto repair invoice →
Frequently asked questions
What should a mechanic put on an invoice?
A repair invoice should list the diagnostic fee, labor hours at your shop rate, each part supplied, and any sundries or disposal charges. Include the vehicle registration, make, model, and mileage at the time of service, because that record matters for warranty claims and for the owner's service history.
Should I itemize parts separately from labor?
Always. Customers are far more accepting of a large total when they can see that most of it was the part rather than your time. It is also required for warranty purposes, since parts and workmanship are usually guaranteed for different periods, which you should state on the invoice.
Do I need to record the vehicle mileage?
It is worth doing on every invoice. Mileage at the time of service establishes when the work was carried out for warranty purposes, supports the vehicle's service history at resale, and protects you if a customer later claims a repair failed earlier than it did.
Should I give a written estimate before starting work?
Yes, and in many places it is a legal requirement above a certain value, with rules about how much the final bill may exceed the estimate without fresh authorisation. Even where it is not mandated, a written estimate is your best protection against a disputed invoice. Record the customer's approval, ideally in writing, and go back to them if the job grows beyond what was authorised. Customers accept additional work they were consulted about and resist additional work they discover on the bill, which is the entire difference between a repeat customer and a complaint.
How do I explain a large repair bill?
Itemize it. A total of two thousand looks arbitrary; the same total broken into diagnostics, a specific part, labor hours at a stated rate, and disposal reads as a considered piece of work. Note the vehicle registration and mileage, describe the fault and what was done to fix it, and list parts individually where several were replaced. Customers are far more accepting of a large number they can decompose, and an itemized invoice also gives them something concrete to check rather than a figure they can only accept or dispute wholesale.
What should I do with old parts?
Offer to return them, and note on the invoice when they have been returned or declined. Some jurisdictions require the customer to be offered the replaced parts, and even where they do not, offering demonstrates that the work was genuinely carried out. This matters more than it sounds, because suspicion about unnecessary repairs is the most common source of distrust in the trade. Where parts are retained for disposal or core return, record that too, and bill disposal separately so the customer can see what the charge covers rather than encountering an unexplained sundry line.
How should I record warranty information?
State the parts warranty and the labor warranty separately on the invoice, since they usually run for different periods, and record the mileage at the time of service. Mileage establishes when the work was done for warranty purposes and supports the vehicle's service history at resale, which customers value. Keep your copy of the invoice with the job card, because warranty claims frequently arrive months later from a customer who has lost their copy, and being able to produce the record immediately resolves the question and looks considerably better than asking them to prove it.
Should I charge a diagnostic or inspection fee?
Yes, and list it separately from the repair. Finding a fault can take real time and equipment even when the fix itself is quick, and without a diagnostic fee you end up doing the hard part for free. Tell the customer the fee up front, and say whether it is deducted from the total if they go ahead with the repair, which many shops offer. A clearly stated diagnostic charge is accepted far more readily than one that appears unexplained on the final bill.
Should I take a deposit for special-order or expensive parts?
For parts you have to order in or that are costly, a deposit is reasonable and protects you if the customer changes their mind after you have bought the part. Agree it when the work is authorized, show it on the invoice as an amount already received, and make the remaining balance clear. It is especially worth doing for non-returnable or vehicle-specific parts.
What is a shop supplies or sundries charge?
It covers the small consumables a job uses that are not worth itemizing one by one, such as cleaner, rags, lubricant, and fasteners. Charging a modest shop-supplies line is common, but it should be disclosed rather than hidden: show it as its own line so the customer can see what it is. Where you can, itemize larger consumables like oil and coolant separately, and keep the sundries line for genuinely minor items.
Related tools and guides
Garages that also handle wider work may want the contractor invoice generator, while the electrician invoice generator and plumber invoice generator share the same parts-and-labor format. For a refresher on the basics, see what to include on an invoice and how to invoice a client.
How your invoice data is handled
Everything in the Auto Repair Invoice Generator happens on your own device. The details you enter and the finished PDF are created in your browser and never sent to a server, so we cannot see or keep a copy of your invoices. No account is needed. Read our Privacy Policy to learn more.