A Shop Can Keep the Car Until It's Paid. How the California Mechanic's Lien Works
By Anthony Limpert, ASE Business Built With Master Automotive Technicians
One shop hands back the keys and chases the bill. The other keeps the car and starts a 30 day clock. Only the second shop still has a hold on the money next month.
Quick answer. Yes, in California a shop can hold a car until the bill is paid. The law gives anyone who repairs, supplies parts for or stores a car a lien for what they are legally owed. That lien depends on keeping the car (Civil Code 3068). But it does not last. Within 30 days of the lien starting, the shop must apply for a lien sale or file in court. Miss that and the lien is gone.
- The lien covers money legally owed. Work the customer never approved is not part of it.
- It starts when you hand over a written bill, or 15 days after the work is done, whichever comes first.
- You have 30 days from then to start a lien sale or file a lawsuit.
- Cars worth $4,000 or less and cars worth more follow two different DMV paths.
- Hand back the keys and the lien goes with the car. Then you are a creditor, not a lienholder.
The Lien Is Real, but It Runs on a Clock
Most pages on this question are written for the driver. They say yes, the shop can keep it, and stop there. That answer is right. It is also only half of what a shop needs.
California Civil Code 3068 gives a lien to every person who repairs or services a car, supplies parts for it, or stores it. The code calls it a lien dependent upon possession. In plain words, you hold the car, you hold the lien (Civil Code 3068).
The lien starts at the earlier of two points. One is when you give the registered owner a written statement of charges. The other is 15 days after the work is done. Once the job is finished, you also cannot strip the parts you installed back off the car (same section).
Then the clock that matters. The lien is wiped out unless, within 30 days of it starting, you apply for a lien sale or file a court action (Civil Code 3068). The DMV says the same thing in its own guide. Miss the 30 days and the lien is no longer valid (DMV).
So a car sitting in the back lot for two months is not pressure. It is a storage bill you may never collect.
The Numbers on a California Repair Lien
- 15 daysLien startsAfter the work is done, unless you hand over a written bill sooner.
- 30 daysStart a lien sale or sueFrom the day the lien starts, or the lien is gone.
- 10 daysOwner can objectFrom the day the DMV notice is mailed.
- $4,000Value lineDecides which DMV lien sale path the car takes.
- 60 daysStorage limitStorage past this is not valid without the Vehicle Code reports.
What You Can Hold the Car For
The lien covers what the customer legally owes you. In California, that starts with the estimate.
Under Business and Professions Code 9884.9, a shop gives a written estimate for parts and labor before work starts. You cannot charge more than that estimate without the customer's consent. That consent has to come after you learn the estimate is short, and before you do the extra work (B&P 9884.9).
Consent by phone counts, if you write it down. The work order has to show the date, the time, the name of the person who said yes, and the number you called. It also lists the added parts and labor and the new total. Then you put the same facts on the invoice, or get the customer to sign or initial the change when the job is done (same section).
This is where most lien fights start. A customer says they never okayed the extra $900. If your paper cannot prove they did, that $900 is not owed. You can hold the car for the approved amount. Holding it for the rest is how a shop ends up on the wrong side of a complaint.

Under or Over $4,000 Changes the Paperwork
Once the 30 day clock starts, the car's value picks the route. The line is $4,000, based on what similar cars sell for (DMV).
| Step | Car worth $4,000 or less | Car worth more than $4,000 |
|---|---|---|
| Code section | Civil Code 3072 | Civil Code 3071 |
| First filing | Ask the DMV for the owners' names with form INF 1126 | Apply for lien sale authorization on form REG 656, with the fee |
| Who mails the owners | You do, right away, by certified mail or certificate of mailing, on form REG 668 | The DMV does, by certified mail |
| Owner's window to object | 10 days from mailing | 10 days from mailing |
| If they object | You must file in court within 30 days of the DMV's notice | You must file in court within 30 days of the DMV's notice |
| When the sale can happen | 31 to 41 days after you mail the notice | After DMV approval, with a newspaper notice 5 to 20 days before and a certified notice 20 days before |
| Notice posted at your shop | At least 10 days in a row before the sale | Posting only if no local newspaper exists |
| Sale day | Car shown 1 hour before, no sealed bids | Car shown 1 hour before, no sealed bids |
From Civil Code 3071 and 3072 and the DMV lien sale page. Read the full code or ask the DMV Lien Sale Unit before you file.
A few rules apply on both paths. Every notice is signed under penalty of perjury. The sale has to be commercially reasonable. After the sale, you remove and destroy the plates and send the DMV a Notice of Release of Liability within 5 days (Civil Code 3071, Civil Code 3072).
On a car worth more than $4,000, the owner can still buy the car back for 10 days after the sale. They pay the sale price, the costs, and interest at 12 percent a year (Civil Code 3071). Skip a step on either path and the sale is void.
The DMV's Lien Sale Unit answers at (916) 657-7617, per its lien sale page (DMV). Call before the first filing if the car is out of state, has no VIN, or has more than one owner on the title.
Five Ways a Shop Loses Its Lien
Each of these comes straight out of Civil Code 3068 (Civil Code 3068).
- You let 30 days pass after the lien starts without a lien sale filing or a lawsuit.
- The legal owner or lessor sends a written demand to inspect the car, and you do not let them in within 24 to 72 hours, during business hours.
- The legal owner asks in writing for the work order or invoice and the customer's approval, and you do not send copies within 10 days.
- The person who asked for the work is not the legal owner, and the bill tops $1,500 for repairs or $1,025 for storage. Past those amounts, the lien only holds if the legal owner got written notice and said yes in writing before you started.
- You keep charging storage past 60 days without filing the Vehicle Code reports the section names.
The fourth one bites shops more than they know. A son drops off his mom's car. A driver brings in a leased truck. If someone other than the person who asked holds the title, look at the registration before a big job.
When the lien dies, the law tells you what happens next. You release the car to the legal owner or lessor at your shop when they pay the storage charges, in cash or by cashier's check. The repair bill becomes a plain debt. And if a court later finds you held a car wrongly, the winning side can recover attorney fees and costs, up to $1,750 (same section).

Hold the Car or Release It and Sue
Sometimes keeping the car is the wrong move. A clunker with a $3,000 bill can cost more in time and storage than the sale will bring. Releasing it is a choice. Just make it on purpose.
| Path | What you keep | What it costs you |
|---|---|---|
| Hold the car and start a lien sale | The car as security, and a legal way to sell it | DMV forms, certified mail, notices, and a bay or a lot spot for a month or more |
| Hold and file in court | The car while the case runs | Court time. The 30 day deadline still applies |
| Release on a signed payment plan | A signed promise and a customer who may come back | The lien. If they stop paying, you are a creditor |
| Release and go to small claims | Your claim | The lien. A business can sue for up to $6,250 in small claims |
A worked example of the trade offs for a shop. The small claims limit is from the California Courts self help site.
That last number matters. California small claims cases top out at $12,500 for a person and $6,250 for a business (California Courts). Picture a $9,000 engine job that walks out the door unpaid. That is a bigger fight than small claims can hold.
Our take, as a shop that turns wrenches every day. Most unpaid bills are not crooks. They are customers who got surprised. The cheapest lien sale is the one you never file, because the customer saw the photos and the price and said yes before the work started.
What to Say at the Counter
Keep it short, calm, and about paper. Something like this.
- We finished the work you approved on the estimate. The total is on this invoice.
- The car stays here until that's paid. That's the law in California for repair work.
- If you need a few days, tell me now and I'll write down the date we agreed on.
- Storage starts after that date. I'll put the daily rate in writing so there are no surprises.
- If we can't sort it out, we'll start the lien process with the DMV. I'd rather not.
Write the date you handed over the invoice on your copy. That date can start your 30 day clock, so put a reminder at day 20.
The Next Step
Every rule above comes back to one record. What the customer approved, when, and how. Shop Desk is the software our own shop runs on. The customer sees the photos and the price before work starts, and the approval sits on the job. It is free to start with no card. See Shop Desk for auto repair, look at the free plan, or read our guide on money back when a repair does not fix the car.
Questions We Get on the Phone
Is it legal for a mechanic to keep your car?
In California, yes, for money legally owed on repairs, parts or storage. Civil Code 3068 gives the shop a lien that lasts as long as it keeps the car. The shop has to start a lien sale or file in court within 30 days of the lien starting, or the lien ends.
What is the legal term for when a mechanic takes your vehicle for not paying?
It is a possessory lien, often called a mechanic's lien or a garage keeper's lien. California's code calls it a lien dependent upon possession. If the bill stays unpaid, the shop can sell the car through a lien sale run under DMV rules.
How long can you leave a car at the mechanic?
There is no single number for a paid job. For an unpaid one, the shop has 30 days from the lien starting to file for a lien sale or sue. Storage charges past 60 days are not valid unless the shop files the Vehicle Code reports, so most shops act well before then.
Can a shop charge storage while it holds a car?
Yes. Storage gives a lien too. If the car is picked up within 24 hours, only one day can be charged. After that it is charged by the full calendar day. Put the daily rate in writing before you start charging it.
What can a shop do when a customer can't pay for repairs?
Hold the car, put any payment plan in writing with dates, and start the DMV lien process before the 30 day deadline if nothing is paid. If you release the car first, you give up the lien and the bill becomes a debt you collect like any other.
Fact Sources
| What we cited | Where it came from |
|---|---|
| California Civil Code 3068, liens for vehicle repair, parts and storage | codes.findlaw.com, opened October 2026 |
| California Civil Code 3071, lien sales of vehicles worth more than $4,000 | codes.findlaw.com, opened October 2026 |
| California Civil Code 3072, lien sales of vehicles worth $4,000 or less | codes.findlaw.com, opened October 2026 |
| California DMV, Lien Sales for Vehicles | dmv.ca.gov, opened October 2026 |
| California Business and Professions Code 9884.9, written estimates and consent | codes.findlaw.com, opened October 2026 |
| California Courts Self-Help Guide, Small Claims in California | selfhelp.courts.ca.gov, opened October 2026 |
Anthony Limpert is the co-founder and lead technician at Supercanic. Shop Desk is the software our own shop runs on, and he built it.
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