The California Lemon Law

What the California Lemon Law Is

The California Lemon Law is the popular name for the Song-Beverly Consumer Warranty Act, enacted in 1970 and substantially expanded by the Tanner Consumer Protection Act in 1982. It is one of the strongest consumer-protection statutes in the United States. Where most state lemon laws cover only new cars within tight mileage limits, Song-Beverly reaches new vehicles, most used vehicles still under warranty, leased vehicles, motorcycles, RVs, and vehicles purchased out of state but registered in California.

The statute imposes an obligation on the manufacturer — not the selling dealer — to repurchase or replace a vehicle that cannot be conformed to its warranty after a reasonable number of repair attempts. It also creates a private right of action for consumers, with mandatory fee-shifting that makes legal representation accessible regardless of the consumer’s resources.

What the law does not cover

• Damage caused by accidents, abuse, neglect, or unauthorized modifications
• Normal wear and tear (brake pads, tires, wiper blades)
• Vehicles purchased primarily for resale or off-road use
• Vehicles with no manufacturer’s written warranty (rare on new cars; common on as-is private-party sales)

See the full statutory framework of the Song-Beverly Act for the complete scope and definitions.

Vehicles Covered Under the California Lemon Law

The statute applies to most consumer motor vehicles sold or leased in California with a manufacturer’s express written warranty. Coverage includes:

• Used vehicles sold with a remaining portion of the original manufacturer’s warranty
• Certified pre-owned (CPO) vehicles covered by a manufacturer-issued CPO warranty
• Leased vehicles under Civil Code § 1793.22
• Electric vehicles, including software- and battery-related defects
• Motorcycles
• RVs and motorhomes (the chassis and many living-quarters components)
• Commercial trucks with a gross vehicle weight under 10,000 lbs purchased by businesses with five or fewer vehicles

Out-of-state purchases registered and primarily used in California are covered when the manufacturer’s warranty is honored in California.

The Lemon Law Presumption: “Reasonable Number of Repair Attempts”

The Tanner Consumer Protection Act (Civil Code § 1793.22) creates a rebuttable presumption that a manufacturer has had a reasonable number of repair attempts when any of the following occurs within 18 months of delivery or 18,000 miles, whichever comes first:

1. Four or more repair attempts for the same nonconformity, or
2. Two or more repair attempts for a defect likely to cause death or serious bodily injury, or
3. The vehicle has been out of service for 30 or more cumulative days for warranty repairs.

The presumption is powerful but not the only path to a claim. The underlying statute (§ 1793.2) requires the manufacturer to repair within a “reasonable number of attempts” — a fact-based standard that can apply outside the 18/18,000 window. Many successful claims involve vehicles past the presumption window with documented repeat repair attempts.

For the detailed mechanics, see the lemon law presumption explained.

What Counts as a Qualifying Defect

To qualify under the California Lemon Law, a defect must substantially impair the use, value, or safety of the vehicle to the buyer. Courts read this standard broadly. Cosmetic flaws and minor inconveniences generally do not qualify; intermittent but recurring failures usually do, even when the dealer cannot reproduce the problem on a given visit.

Common qualifying defects by system:

• Engine defects: stalling, misfires, oil consumption, premature failure
• Transmission defects: hard shifts, slipping, shudder, premature failure
• Electrical defects: parasitic drains, module failures, intermittent shorts
• Brake defects: pulsation, premature wear, ABS faults, brake-by-wire failures
• Steering and suspension defects: pulling, vibration, electric power steering failures
• Safety system defects: airbags, ADAS, lane-keeping, automatic emergency braking
• Infotainment and software defects: connectivity loss, OTA-update failures, screen freezes

How the California Lemon Law Claim Process Works

A lemon law claim moves through five practical stages:

1. Document every repair attempt. Keep every repair order, work order, and warranty claim. Repair-order language is the single most important evidence in a lemon law case.
2. Final repair opportunity and written notice. Under § 1793.2(d)(2), the manufacturer must be given the opportunity to repair the defect. Written notice triggers the manufacturer’s obligation to repurchase or replace.
3. Manufacturer-sponsored arbitration. Some OEMs require or offer arbitration through programs like BBB Auto Line. Arbitration is non-binding on the consumer.
4. Pre-litigation demand and negotiation. Most claims settle here once the consumer is represented by an attorney with a documented record.
5. Civil litigation. If negotiation fails, the consumer files suit in superior court. Few cases reach trial because the fee-shifting statute makes prolonged defense expensive for manufacturers.

For a step-by-step guide, see how to file a California lemon law claim. For a realistic schedule, see the lemon law case timeline.

Remedies Available Under the California Lemon Law

Successful claimants choose among three primary remedies under Civil Code § 1793.2(d)(2), in addition to penalties and fees:

Buyback (repurchase)

The manufacturer refunds the purchase price, registration, sales tax, finance charges, and incidental damages, less a statutory mileage offset for use before the first repair attempt.

Replacement vehicle

The manufacturer provides a substantially identical new vehicle, paying registration, taxes, and transfer fees. The consumer chooses between buyback and replacement.

Cash-and-keep settlement

A negotiated lump sum the consumer accepts while retaining the vehicle. Common for defects that are documented but no longer impair daily use.

Civil penalty (§ 1794(c))

Up to two times actual damages if the manufacturer’s failure to comply was willful. Strong leverage in negotiation.

Attorney’s fees and costs (§ 1794(d))

The manufacturer pays the prevailing consumer’s reasonable attorney’s fees, expert costs, and litigation expenses. This is why a California lemon law attorney costs you nothing out of pocket.

The exact buyback math is governed by the statutory mileage offset formula in § 1793.2(d)(2)(C).

Statute of Limitations

California applies a four-year statute of limitations for breach of warranty claims under Commercial Code § 2725, running from delivery of the vehicle. The clock can be paused (tolled) by the manufacturer’s repair attempts under the “repair doctrine” — each attempt arguably restarts the limitations period for that defect.

Practical advice: do not wait. Repair orders are scanned and stored, but service writers turn over, dealer franchises change hands, and recollections fade. The strongest cases are filed within a year of the last repair attempt. See statute of limitations for California lemon law claims for a deeper analysis.

California Lemon Law vs. Federal Magnuson-Moss Warranty Act

The federal Magnuson-Moss Warranty Act (15 U.S.C. §§ 2301–2312) creates a parallel federal cause of action for breach of written and implied warranties. Experienced California lemon law attorneys typically plead both statutes because:

• Magnuson-Moss provides federal jurisdiction as an alternative to state court
• It has its own fee-shifting provision (15 U.S.C. § 2310(d)(2))
• Its definition of “implied warranty” is incorporated into state law for written-warranty disclaimers

Song-Beverly is the stronger consumer statute and the primary claim in nearly every California case; Magnuson-Moss serves as backstop and as a basis for federal venue when desirable.

Manufacturer-Specific Lemon Law Patterns

Certain defects recur by manufacturer and platform. Knowing the pattern accelerates the claim:

• Tesla — autopilot, software regressions, build-quality and panel-gap defects, HV battery degradation
• Honda & Toyota — CVT shudder, transmission programming, hybrid battery
• Ford — PowerShift dual-clutch transmission, EcoBoost coolant intrusion, F-150 cam phaser
• Hyundai & Kia — Theta II engine seizures, oil consumption, anti-theft software
• BMW & Mercedes-Benz — electrical gremlins, emissions software, timing chain
• Chevrolet / GM — 8L90 transmission shudder, lifter failures, Bolt EV battery
• Stellantis (Ram, Jeep, Chrysler, Dodge) — eTorque, ZF transmission, electrical
• Audi / VW, Nissan, Subaru

How a California Lemon Law Attorney Helps

The California Lemon Law was written to be enforceable without legal expertise — but in practice, manufacturers settle for substantially more when the consumer is represented. A California lemon law attorney:

• Builds the repair-order chain of evidence that establishes “reasonable number of attempts”
• Serves the § 1793.2(d)(2) notice that triggers the manufacturer’s repurchase obligation
• Negotiates buyback math, including which mileage figure governs the offset
• Pleads Magnuson-Moss alongside Song-Beverly to maximize jurisdictional and damages options
• Litigates the civil penalty under § 1794(c) when the manufacturer’s conduct is willful

Because § 1794(d) shifts attorney’s fees onto the manufacturer, McMillan Law Group represents California lemon law clients on a contingency basis. You pay nothing unless we win.

Learn more about our California lemon law representation or request a free case review.