Auto Repair Warranty Policy: Template and Terms
A copy-ready auto repair warranty policy, the terms repair networks publish, what the FTC says about written warranties, and a comeback process.
An auto repair warranty policy tells customers what happens if a repair fails: what you'll fix, for how long, and how they ask. Most shops have one in their heads. Fewer have it written on every invoice, and that's where disputes come from: the customer remembers "lifetime", the service writer remembers "12 months on labor", and nobody can show what was promised.
More on this topic: Running an auto repair shop, every guide in one place.
This guide covers the terms repair networks publish, how to choose yours, a template you can edit, what federal law says about written warranties, and how to handle and measure the comebacks your warranty covers.
The short answer
An auto repair warranty policy, in short, states what you cover (parts and labor on the repair), for how long, what's excluded and how to claim. Published network terms run from 24 months or 24,000 miles (TechNet, AAA Approved Auto Repair) to 3 years or 36,000 miles (Christian Brothers Automotive). Print it on every invoice.
Key takeaways
- Write the warranty down and print it on every invoice; an unwritten warranty is whatever the customer remembers.
- Your parts suppliers' warranty terms set the floor of what you can afford to offer on labor.
- Matching a known network term (24 months/24,000 miles is common) is easier to explain than an unusual one.
- The FTC says federal warranty law applies when your warranty covers the parts you install, not only your labor.
- Treat every comeback as data: log the cause, the technician and the cost, and track your comeback rate monthly.
Disclosure: we make BayRobin, an AI receptionist and front office for independent repair shops, and show where it fits. Everything here works without it. Figures from other companies come from their public pages, checked in October 2026 and linked at the end.
Why does a written warranty policy matter?
Three reasons. It settles disputes, because the terms are on paper. It sells work: price shoppers often ask "what's the warranty?", and a clear answer beats a vague one (our price shopper guide has the script). And it protects you legally, because a written warranty that covers parts falls under federal warranty law, which has rules about how it's presented (covered below).
What warranty terms do repair shops offer?
These are terms published by repair networks and programs on their own pages, checked in October 2026:
| Program | Published term | Notes |
|---|---|---|
| TechNet Professional (a network of independent shops) | 24 months or 24,000 miles, whichever comes first | Honored at 15,000+ locations; excludes abuse, misuse, neglect, accidents and normal wear |
| AAA Approved Auto Repair | 24 months or 24,000 miles, whichever occurs first | Repairs guaranteed by the approved facility |
| Christian Brothers Automotive | 3 years or 36,000 miles, whichever occurs last | Honored at any CBAC location |
| Midas | Limited lifetime guarantee on certain parts (such as brake pads, mufflers and shocks) | For as long as you own the car; labor is charged on replacement |
Note the difference between "whichever comes first" and "whichever occurs last". Christian Brothers' wording means a low-mileage driver is covered for three years and a high-mileage driver for 36,000 miles, even past three years. It's generous, and it's a marketing choice; most independents use "whichever comes first".
How long should your warranty be?
Work it out from four things, in this order:
- Your parts suppliers' warranties. If a part fails inside its supplier warranty, you get the part back, sometimes with a labor allowance. If your warranty runs longer than the supplier's, the parts and labor on a late failure are on you.
- What local competitors advertise. If the networks around you advertise 24 months/24,000 miles, offering 12/12 is a visible disadvantage; offering 36/36 is a selling point if you can afford it.
- Your comeback history. If you know your comeback rate and average comeback cost (below), you can estimate what a longer warranty costs per repair order.
- Which parts you use. Some shops offer a longer warranty on premium parts lines and a shorter one on economy parts. If you do, make the tier visible on the estimate.
Whatever term you pick, use the same one on every job type unless there's a clear reason not to. A single term is easy for service writers to say and for customers to remember.
What should an auto repair warranty policy include?
- What's covered: parts you supplied and installed, and the labor to install them.
- Length, in months and miles, with "whichever comes first" or "whichever occurs last".
- Where it's honored: your shop only, or a network, and what happens if the customer is far away.
- Exclusions: customer-supplied parts, normal wear, abuse, accidents, other shops' work, and consequential costs such as towing or rentals (or say what you do cover).
- How to claim: call first, bring the invoice, let you inspect before anyone else works on it.
- Transferability: whether it follows the car or the customer.
- Whether it's a "full" or "limited" warranty (see the federal law section).
Is there a warranty policy template you can copy?
Edit the bracketed parts, have your lawyer or state association look at it once, then print it on every invoice and post it at the counter:
[Shop name] Limited Warranty. We warrant the parts we supply and install, and our workmanship in installing them, against defects for [24 months or 24,000 miles], whichever comes first, from the date and mileage on your invoice. If a covered part fails or our workmanship is faulty during that time, we will repair or replace it at no charge for parts or labor.
What's not covered: parts supplied by the customer; normal wear items after normal wear (such as brake pads and wiper blades); damage from accident, abuse, neglect, racing, overheating or lack of maintenance; repairs or alterations by anyone else; towing, rental cars and lost time unless we agree in writing; and other parts damaged by an unrelated failure.
How to make a claim: call us at [phone] and keep your invoice. Bring the vehicle to us for inspection before any other shop works on it. If you're more than [50] miles away, call first and we'll arrange the repair. This warranty is [not] transferable to a new owner.
Your rights: this warranty gives you specific legal rights, and you may have other rights that vary from state to state.
What does federal law say about repair warranties?
The Magnuson-Moss Warranty Act covers written warranties on consumer products. The FTC's guide for businesses says "the Act does not apply to warranties on services", but adds that "if your warranty covers both the parts provided for a repair and the workmanship in making that repair, the Act does apply to you." Most repair-shop warranties cover both, so assume it applies.
In practice that means, per the FTC guide: for products costing more than $10, a written warranty must be labeled "full" or "limited" (most shop warranties are "limited", which is why the template says so); for products over $15, the terms must be disclosed clearly and made available to customers before the sale. Read the FTC guide (linked below) or ask counsel; this isn't legal advice, and your state may add requirements.
How should you handle a comeback under warranty?
A comeback is a car that returns with the same problem after you fixed it. How you handle the first five minutes decides whether you keep the customer. On the phone, apologize, book the earliest slot and note that it's a recheck (our phone script has the words). Then:
- Inspect before deciding anything. Confirm the symptom and find the cause.
- Classify it: wrong diagnosis, failed part, workmanship, or a new, unrelated problem.
- If it's covered, fix it, at no charge, and say so plainly. If it's unrelated, show the customer why (photos help) and write a separate estimate.
- Claim the part under your supplier's warranty if it failed.
- Log it: date, original repair order, technician, cause, parts and labor cost, and how long the car was out.
Don't ask a comeback customer for a review until it's resolved, and consider a goodwill gesture if they lost a day of work.
How do you track your comeback rate?
Comeback rate = comeback repair orders ÷ total repair orders, per month. Track the cost too: parts and labor you absorbed. There's no reliable public benchmark for independents, so the trend in your own shop matters more than any number from elsewhere.
Worked example (illustrative numbers)
A shop closes 300 repair orders in a month and has 6 comebacks: a 2% rate. The six cost $1,140 in absorbed parts and labor, $3.80 per repair order across the month. If four of the six trace to one category (say, intermittent electrical diagnoses), that's where training or a second check pays off. Compared with Tekmetric's national average repair order of $704.25 through June 2026, $3.80 is small, and knowing it makes a longer warranty an informed decision rather than a guess.
Frequently asked questions
What is a standard warranty for auto repair?
There's no single standard, but published network terms are a useful guide: TechNet and AAA Approved Auto Repair facilities offer 24 months or 24,000 miles, whichever comes first, and Christian Brothers Automotive offers 3 years or 36,000 miles, whichever occurs last. Many independents pick a term in that range.
Does a repair shop warranty cover labor?
Usually, if the warranty says so. Most shop warranties cover the parts the shop supplied and the labor to install them. Labor on customer-supplied parts is commonly excluded or covered only briefly. Write your policy so it states exactly what's covered.
Do auto repair shops have to offer a warranty?
Federal law doesn't require one, but if you give a written warranty that covers the parts you install, the FTC says the Magnuson-Moss Warranty Act applies, including the "full" or "limited" label for products over $10. Some states have their own rules, so check yours.
What counts as a comeback in auto repair?
A vehicle that returns with the same complaint after a repair, usually within the warranty period. Inspect it first: it may be a failed part, a misdiagnosis, a workmanship issue, or a new and unrelated problem that should be estimated separately.
Should I warranty customer-supplied parts?
Most shops don't warranty the part itself and limit or exclude labor, because they can't vouch for its quality or claim it from a supplier. Whatever you decide, put it in the written policy and on the estimate before you install the part.
Where BayRobin fits
BayRobin keeps every visit on the customer's record with the vehicle, its mileage on each job and the invoice, so a warranty call starts with the original repair in front of you; calls the AI receptionist answers carry a recording, transcript and summary on the job. It doesn't run warranty claims with your parts suppliers; you do that as today. BayRobin is free until your first 10 booked jobs, no card up front. Start free or see pricing.
Related: diagnostic fees and how to present them, how to get more Google reviews, the KPIs to track each month, inspections, estimates and invoices.
Sources
Competitor details in this post were checked against these public pages in October 2026. Products and prices change, so confirm with each vendor before you decide.
