Two different clocks govern a lemon law claim, and confusing them is the most common reason people wrongly assume it is too late.
There are two separate time rules in California lemon law, and they do very different things. One is a filing deadline. The other is an evidentiary shortcut. People routinely mistake the second for the first and give up on claims that are still perfectly viable.
The short version: the four-year statute of limitations is the deadline. The 18 month / 18,000 mile figure is not a deadline at all.
A claim for breach of written warranty in California is generally subject to a four-year statute of limitations. That is the actual deadline for bringing a lemon law action.
When the four years start running is the part that requires care. The clock generally begins when the breach is discovered — broadly, when you knew or reasonably should have known the manufacturer would not repair the defect — rather than automatically on the day you bought the vehicle. Because that turns on the facts, two owners with identical purchase dates can face different deadlines.
There are also doctrines that can affect the timeline in either direction. This is precisely the sort of question worth asking early rather than assuming.
This is the single most common misunderstanding we encounter. California provides a presumption that a reasonable number of repair attempts has been made where, within 18 months or 18,000 miles, the vehicle had four or more repairs for the same defect, two or more for a serious safety defect, or spent more than 30 days out of service.
What that presumption does is shift the evidentiary burden in your favour. What it does not do is extinguish claims that fall outside it. A defect that first appeared at 25,000 miles can absolutely support a claim — it simply has to be proven on the facts rather than assumed.
If you were told your claim is dead because you passed 18,000 miles, that advice was probably wrong.
Even with four years available, delay costs you in practical ways:
If you think you may be near a deadline, the useful step is a review rather than a guess. We look at the purchase contract, the repair orders and the dates, and tell you where the timeline actually stands. That review costs nothing.
Related reading: lemon law qualifications, the lemon law for new cars, and used car coverage.
Generally four years for breach of a written warranty. When the clock starts depends on when the breach was or should have been discovered, so the practical deadline varies with the facts.
No. It defines when a legal presumption applies that makes a claim easier to prove. Claims outside 18 months or 18,000 miles remain viable and are brought successfully all the time.
Often yes. What generally matters is that the defect appeared and was reported while the warranty was in force, and that the claim is brought within the statute of limitations.
Generally on discovery of the breach rather than the purchase date — broadly, when you knew or should have known the manufacturer would not fix the defect. Because this is fact-dependent, have it reviewed rather than estimated.
It is usually worth it, particularly if you were told the 18,000 mile figure ended your claim. That is a presumption threshold, not a deadline, and the distinction changes the answer in many cases.
Send us the dates and the repair orders. We will tell you where your timeline actually stands, at no cost.