California's lemon law never says "three strikes" or any other fixed number. Its main rule, in Civil Code section 1793.2(d)(2), asks whether the manufacturer had a "reasonable number of attempts" to fix a warranty defect. That leaves room for argument, so the Legislature added a shortcut in Civil Code section 1793.22(b), often called the Tanner Act presumption. If your repair history fits one of its three patterns, the law presumes the manufacturer had enough chances.
The presumption is "rebuttable," which means it shifts the burden of proof rather than ending the argument. Once you show the facts, the manufacturer has to prove the number of attempts was not reasonable, for example by arguing the defect was fixed, came from an accident or misuse, or doesn't substantially affect the car's use, value or safety. Many valid claims never meet the presumption at all, and our California lemon law guide explains who is covered in the first place.
The three paths to the presumption
All three paths share one time limit. The events must happen within 18 months from delivery or 18,000 miles on the odometer, whichever comes first.
| Path | What has to happen inside the window | Direct notice to the manufacturer? |
|---|---|---|
| Serious safety defect | The same defect, one likely to cause death or serious bodily injury if the car is driven, was subject to repair 2 or more times | Yes, at least once, if the warranty or manual required it |
| Same defect, repeated | The same defect was subject to repair 4 or more times | Yes, at least once, if required |
| Days out of service | The car was out of service for warranty repairs more than 30 calendar days in total since delivery | No |
"Whichever comes first" trips people up. A commuter who drives 1,400 miles a month passes 18,000 miles before month 13, so that driver's presumption window closes around then, not at month 18. For someone who drives 600 miles a month, month 18 arrives first. Check the mileage printed on each repair order against its date before you start counting. A fourth repair that happens at 18,600 miles falls outside the window even if it is only month 14.
The first two paths count repairs of the same defect. Four visits for four unrelated problems don't meet the four-repair path, although time spent on qualifying warranty defects still counts toward days out of service and toward the general question of whether the manufacturer had a fair chance. The statute sets a lower number for defects likely to cause death or serious injury, so a car that may stall in traffic or lose braking is treated differently from one with a glitchy radio. It doesn't list which defects meet that description, so the label is argued case by case, and a repair order that records the safety symptom in plain words helps.
The direct-notice condition
Paths one and two have an extra step that is easy to miss. You must have notified the manufacturer directly at least once, but only if the manufacturer "clearly and conspicuously disclosed" that requirement, along with these lemon law rules, in the warranty or owner's manual. When it did, find the California lemon law section, send a short written notice describing the defect and the repair visits to the address listed there, and keep a copy with proof that it arrived.
When the manufacturer has a certified arbitration program
Section 1793.22(c) adds one more condition. If the manufacturer runs a state-certified dispute program and told you about it in writing in time, you have to try that program before you can rely on the presumption. That rule limits the presumption only. It doesn't stop you from hiring a lawyer, and arbitration is not a condition of suing (the lemon law process page explains the order of steps).
More than 30 days in the shop
The third path is the "30 days" rule most people have heard about. It is met when the car has been out of service for warranty repairs for a cumulative total of more than 30 calendar days since delivery, inside the 18-month or 18,000-mile window. Calendar days include weekends and holidays, and "more than 30" means day 31 crosses the line while day 30 does not.
The days don't need to come from one long visit. Three trips of 9, 12 and 11 days add up to 32, which clears the bar. As the statute is written, it counts days spent repairing "nonconformities," plural, so the total can include time for more than one qualifying warranty defect. There is no direct-notice step on this path. The 30 days can be stretched only when repairs couldn't be performed because of conditions beyond the manufacturer's control.
Your day count lives on paper. Under Civil Code section 1795.6(d), a shop doing warranty work must give you a work order or receipt showing the date you brought the car in and the date you were told it was repaired. Check both dates before you drive away, since a wrong date can quietly cost you days.
A second 30-day rule
Section 1793.2(b) sets a separate deadline for each warranty repair. Unless you agree otherwise in writing, the repair must be finished within 30 days. Delays caused by conditions beyond the manufacturer's control extend it. This rule governs how long one repair may take, while the presumption counts visits and total days. Read anything you're asked to sign at drop-off, because your written agreement is one of only two things that can change that 30-day limit.
When your history doesn't fit the presumption
Missing the presumption is common, and it doesn't end a claim. The core test is still a reasonable number of attempts, and the Department of Consumer Affairs says the lemon law applies throughout the manufacturer's original warranty period. A defect that first appears at 22,000 miles can never meet the presumption. It can still support a buyback if the manufacturer fails to fix it after a fair chance.
How many chances is fair? The Department of Consumer Affairs says there must be at least two repair attempts, and California courts have held that the manufacturer is entitled to more than one opportunity (Silvio v. Ford Motor Co., 2003). Past that floor, the answer depends on how serious the defect is, how long the car sat, whether each repair changed anything, and how much the defect affects the car's use, value or safety. One failed repair is generally too early. Waiting for a sixth attempt has its own cost, because the time to file keeps running.
Making every repair visit count
Repair orders are the evidence in a lemon law case. Each one should show the defect, the date, the mileage and what the shop did. These habits get that onto paper:
- Write the symptom down before you arrive. Note when it happens, at what speed or temperature, which warning lights come on, and what you hear or feel. Hand the note to the advisor and ask that your words go on the "customer concern" line. A vague entry like "customer states noise" makes it hard to prove later visits were for the same defect.
- Tie each visit to the last one. Ask the advisor to add a line such as "same concern as repair order #48213 dated March 14." That one line links the visits for the four-repair count and settles which visit came first, which also fixes the mileage used in the buyback offset.
- Get a copy every time, including when nothing was fixed. Civil Code section 1793.1(a)(2) requires the shop to give you a copy of the warranty work order. A visit marked "could not duplicate" or "no problem found" still shows you brought the car in for that defect on that date. Without the copy, you depend on the dealer's records later.
- Record the problem on video when it is safe. Have a passenger film the warning light or the noise, or film it while parked. Never record while you drive. Show the video to the advisor and ask that the order note it was reviewed.
- Keep a simple log. Date in, date out, mileage both times, the advisor's name, and any rental or tow receipts. The log makes the 30-day count easy and backs up the out-of-pocket costs a manufacturer can owe in a lemon law buyback.
- Stay current on scheduled maintenance. A manufacturer may point to skipped service to argue a problem came from neglect, and oil-change and tire-rotation receipts answer that.
Recalls and software updates
Recall work raises its own questions. Check your VIN on NHTSA's recall lookup to see which recalls are open on your car. Whether a recall repair counts as a repair attempt depends on the facts, mainly whether the recall targeted the defect you have been reporting. A recall by itself does not make a car a lemon. When you bring the car in for a recall, describe any ongoing symptom too, so the order shows the problem was still there. The same goes for software updates: if the dealer installs one for your complaint, ask that the order connect the update to the symptom you reported.
Count your visits
Lay your repair orders out in date order. Circle the visits for the same defect, add up the days between drop-off and pickup, and note the mileage on the first visit for each problem. If your totals land near 2, 4 or 30, or the defect keeps coming back after the 18-month mark, the lemon checker will walk through the rest. You can also send the orders for a free case review.
Updated October 2, 2026
Common questions
Does a "could not duplicate" visit count as a repair attempt?
It can still matter. The legal question is whether the manufacturer had a reasonable chance to fix the defect, and a repair order showing you brought the car in and described the problem is evidence that it did. How much weight a no-fix visit gets depends on the facts, so keep the order either way and ask the shop to write down what it checked.
Do repair visits for different problems add up?
Not for the two-repair and four-repair paths, which count repairs of the same defect. The days-out-of-service path works differently. The statute counts days spent repairing "nonconformities," plural, so time in the shop for more than one qualifying defect can add up toward the 30 days. Visits for each defect also matter in the broader question of whether the manufacturer had a fair chance.
Do days waiting for parts count toward the 30 days?
Generally the count runs while the car is out of service for warranty repair, weekends included. The statute extends the 30-day limit only when repairs can't be performed because of conditions beyond the manufacturer's control. Whether a parts backorder fits that exception depends on the facts, so keep any written explanation the dealer gives you for a delay.
Does telling the dealer count as notifying the manufacturer?
Generally, no. When the warranty booklet or owner's manual clearly requires it, the presumption calls for direct notice to the manufacturer at the address listed there. The dealer performs repairs for the manufacturer, but a conversation with a service advisor is not direct notice. Send it in writing and keep proof it arrived.
Can one failed repair be enough for a lemon law claim?
Usually not. The Department of Consumer Affairs says there must be at least two repair attempts, and California courts have held that a manufacturer is entitled to more than one chance to fix a defect. If a single repair failed, go back, document the problem again, and keep every piece of paperwork from both visits.