When Is a Car a 'Lemon' in California?

The short answer: a vehicle becomes a “lemon” under California’s Song-Beverly Act when the manufacturer has had a reasonable number of attempts to repair a substantial defect and has failed to do so. The longer answer requires unpacking what each of those phrases means in practice.

The legal test

Under California Civil Code § 1793.2(d)(2), a vehicle qualifies for buyback or replacement when:

• The manufacturer or its authorized dealer is unable to service or repair the vehicle to conform to the applicable express warranties after a reasonable number of attempts.
• The defect substantially impairs the vehicle’s use, value, or safety.
• The buyer purchased the vehicle for personal, family, or household use (with some commercial-use exceptions under § 1795.92).

If those conditions are met, the buyer can elect a buyback (restitution) or replacement vehicle.

What counts as a “substantial” defect

The substantial-impairment test is satisfied when the defect affects:

• Use — the vehicle won’t reliably start, drive, brake, accelerate, or perform its normal functions.
• Value — the market value is materially diminished by the defect.
• Safety — the defect creates a risk of injury or loss of control.

Any one prong is enough. Common qualifying defects:

• Transmission failures — hesitation, hard shifting, slipping.
• Engine problems — stalling, misfires, oil consumption.
• Brake issues — ABS failures, parking-brake actuator issues.
• Electrical and software defects affecting safety systems.
• Steering and suspension issues affecting control.
• EV-specific issues like range loss, charging failures.

Cosmetic flaws, normal wear, and damage caused by the buyer typically don’t qualify.

What counts as a “reasonable number of attempts”

There’s no rigid number. California Civil Code § 1793.22 provides a presumption-based safe harbor when, within the first 18 months or 18,000 miles:

• Four or more repair attempts for the same defect, OR
• Two or more repair attempts for a defect “likely to cause death or serious bodily injury”, OR
• 30 or more cumulative days out of service for repairs.

Meeting the presumption shifts the burden to the manufacturer. But buyers can — and often do — prevail on fewer repair attempts when the facts support it. The presumption is a floor, not a ceiling.

What about the buyer’s mistakes?

California’s Song-Beverly Act only protects buyers when the underlying defect was the manufacturer’s responsibility — not the buyer’s. Defects caused by:

• Accidents.
• Unauthorized modifications.
• Neglect (e.g., ignoring warning lights, running the vehicle without oil).
• Misuse.

…do not qualify. Manufacturers’ defense teams routinely raise these issues, particularly for modifications and accidents. Maintain clean documentation showing the defect emerged independently of buyer action.

Does the vehicle have to still be in warranty?

The defect must have manifested during the warranty period. The buyer doesn’t have to file the lawsuit during the warranty period — but the defect must have appeared while the warranty was in effect. The four-year statute of limitations from delivery generally controls when the lawsuit must be filed.

How do I know if my car qualifies?

The clearest indicators that your vehicle may be a California lemon:

• You’ve taken it in for repair multiple times for the same defect, and the defect persists.
• The vehicle has been out of service for 30+ days during the warranty period.
• You have a safety-critical defect with two or more repair attempts.
• The manufacturer has been offering “goodwill” payments suggesting they recognize a problem.

If any of these apply, a free case review with a California lemon-law attorney will give you a definitive answer based on your specific facts.

What if you’re uncertain?

Borderline cases happen. The honest answer often depends on:

• The severity of the defect.
• How the manufacturer documented its repair attempts.
• The number of repair visits and out-of-service days.
• Whether your defect aligns with documented manufacturer TSBs.

Getting an attorney’s free assessment is the fastest way to clarity. Most California lemon-law attorneys work on contingency — you pay nothing for the case if it’s not viable. See our free case review guide for context.

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