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Santa Clara County

Cupertino Lemon Law

Drivers in Cupertino are covered by the Song-Beverly Consumer Warranty Act (with Tanner Consumer Protection Act presumption) (Cal. Civ. Code §§ 1790-1795.8 (Song-Beverly); § 1793.22 (Tanner Act)). If your new or used vehicle has a substantial defect the dealer can't fix, you may be entitled to a refund, replacement, or cash settlement. The manufacturer pays the legal fees — you pay nothing out of pocket.

Where Cupertino cases are filed

Santa Clara County Superior Court – Downtown Superior Court

191 N. First Street, San Jose, CA 95113

https://santaclara.courts.ca.gov/locations →

Why local conditions matter

How Cupertino's driving environment affects vehicle reliability

Cupertino's western Santa Clara Valley climate is mild Mediterranean — warm dry summers in the 80s, cool wet winters, and afternoon Bay-influenced breezes. Prolonged UV exposure bakes plastic and rubber components, while sustained tech-campus commute duty cycles produce heavy thermal cycling on vehicles parked outdoors at corporate campuses.

Major routes:  I-280 · CA-85 · US-101

EV battery thermal-management and charging faults

One of the highest per-capita EV adoption rates in the country combined with heavy use of workplace and DC fast-charging at tech-campus stations stresses battery thermal-management systems and onboard chargers, producing thermal-management faults, range degradation, and DC fast-charge errors that recur after dealer reflashes under warranty.

Infotainment, ADAS, and software-defined vehicle bugs

Cupertino's tech-savvy buyer base skews toward newer software-defined vehicles, where over-the-air updates frequently trigger persistent infotainment reboots, lane-keep-assist disengagements, parking-sensor faults, and self-driving-feature errors that dealers cannot resolve through repeated software updates.

Transmission shudder and hesitation

Sustained stop-and-go commutes between I-280, CA-85, and US-101 corridors during Silicon Valley rush hour stresses dual-clutch and CVT transmissions, producing low-speed shudder, harsh shifts, and torque-converter lockup complaints that recur after multiple dealer reflashes under warranty.

Luxury-vehicle electronics and HVAC faults

High concentration of luxury European and Asian brands operated in heavy stop-and-go duty cycles surfaces persistent electronic control unit failures, HVAC actuator defects, and ambient-lighting/seat-comfort module faults under prolonged warranty repair visits.

Dealership clusters

Cupertino itself hosts limited new-car franchise dealer presence within city limits, with most residents shopping along the Stevens Creek Boulevard auto-row corridor in adjacent San Jose, plus dealer clusters in Sunnyvale, Santa Clara, and Los Gatos. The Stevens Creek corridor between Winchester and Saratoga concentrates the bulk of luxury European, premium Asian, and EV showrooms serving Silicon Valley.

Brands we see most

Cupertino's affluent tech-worker buyer base skews dramatically toward EVs (Tesla, Lucid, Rivian, Polestar, Hyundai Ioniq, Kia EV6) and luxury European brands (BMW, Mercedes-Benz, Audi, Porsche), with a strong Lexus, Acura, Honda, and Toyota hybrid presence reflecting the large Asian-American population. Cupertino has among the highest EV adoption rates of any U.S. city.

Areas served around Cupertino

  • Monta Vista
  • Rancho Rinconada
  • Inspiration Heights
  • Garden Gate
  • Seven Springs
  • Oak Valley

Your rights under California law

Song-Beverly Consumer Warranty Act (with Tanner Consumer Protection Act presumption)

Song-Beverly Consumer Warranty Act (with Tanner Consumer Protection Act presumption) (Cal. Civ. Code §§ 1790-1795.8 (Song-Beverly); § 1793.22 (Tanner Act)) gives California drivers the right to a refund, replacement, or cash settlement when the manufacturer can't fix a substantial defect. The threshold is 4 repair attempts or 30 cumulative days out of service, within 18 months of delivery.

Full California lemon law guide →

Common questions

Lemon law in Cupertino, CA

Where do Cupertino lemon-law cases get filed?

Most Song-Beverly cases brought by Cupertino residents are filed in the Santa Clara County Superior Court — typically the Downtown Superior Court at 191 N. First Street in San Jose for unlimited civil cases over $35,000. Federal Magnuson-Moss claims may be filed in the U.S. District Court for the Northern District of California in San Jose. Venue choice depends on the manufacturer's residency, amount in controversy, and tactical considerations like jury composition and discovery rules. Your attorney will weigh these factors when filing.

My Tesla keeps getting OTA updates but the same problem returns — does that count as repair attempts?

Yes. Repeated software updates and over-the-air patches that fail to resolve a defect generally count as repair attempts under California law. Battery degradation outside normal parameters, persistent thermal-management faults, DC fast-charging failures, Autopilot disengagements, and high-voltage system warnings are common warranty complaints on newer EVs. The Tanner Act doesn't distinguish between mechanical and software repair attempts — if the same nonconformity persists after four or more attempts within 18 months/18,000 miles, the presumption applies. Document every service visit including OTA logs.

I bought my car at a dealership in Sunnyvale or San Jose — does that matter?

Not for your Song-Beverly claim. Under California law, the lemon-law action runs against the vehicle's manufacturer, not the selling dealer. Whether you bought in Sunnyvale, San Jose, Santa Clara, or anywhere else in the South Bay, the same repair-or-replace obligations apply to the OEM. The selling dealer is only a defendant if you're also pleading fraud, misrepresentation, or implied-warranty claims. Keep your purchase contract and every repair order from any dealership that worked on the vehicle.

Does Song-Beverly cover my leased BMW, Audi, or Mercedes?

Yes. Cal. Civ. Code 1791(g) expressly defines 'buyer' to include lessees under retail leases of consumer goods, and Tanner Act remedies apply to leases of new motor vehicles. If you qualify for a repurchase, the manufacturer must terminate the lease, refund your capitalized cost reduction, monthly payments, registration and license fees, and pay off the residual to the leasing company. The mileage offset under Cal. Civ. Code 1793.2(d)(2)(C) still applies, calculated from miles before the first repair attempt. Civil penalties of up to 2x actual damages are available for willful violations.

My EV's range dropped sharply — is that a Song-Beverly issue?

It can be. Battery degradation outside normal parameters, persistent thermal-management faults, DC fast-charging failures, and high-voltage system warnings are increasingly common warranty complaints on newer EVs. Manufacturers' battery warranties typically cover capacity loss below a specified threshold (often 70%) within 8 years/100,000 miles. If the dealer has attempted to repair or address the same problem four or more times within 18 months/18,000 miles, the Tanner Act presumption applies. Save your owner's-app screenshots showing degraded range and every service order.

How does the civil penalty work for willful violations?

Cal. Civ. Code 1794(c) and (e) authorize a civil penalty of up to 2x actual damages where the manufacturer's failure to comply with Song-Beverly was willful. 'Willful' generally means the manufacturer knew of its obligations, knew the vehicle qualified for repurchase or replacement, and refused to honor them. Internal documents, TSBs, recall history, and the manufacturer's response to your demand letter are all relevant. Combined with actual damages, this creates a treble-exposure ceiling, which is one reason California manufacturers often settle qualifying cases before trial.

How long do I have to file a Cupertino lemon-law claim?

California's Song-Beverly breach-of-warranty action runs four years from the date of breach under Cal. Com. Code 2725, with the clock typically starting when the manufacturer fails to repair within a reasonable number of attempts. AB 1755 (effective 2025) added an outer-limit deadline: new claims must be filed within one year after express warranty expiration and no later than six years from original delivery. Don't wait — once your warranty expires you have a hard one-year window. Talk to a lemon-law attorney as soon as your dealer has failed to fix the same problem multiple times.

Stuck with a lemon in Cupertino?

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