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Contra Costa County

Concord Lemon Law

Drivers in Concord 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 Concord cases are filed

Contra Costa County Superior Court — Wakefield Taylor Courthouse

725 Court Street, Martinez, CA 94553

https://www.cc-courts.org/ →

Why local conditions matter

How Concord's driving environment affects vehicle reliability

Concord has a hot-summer Mediterranean climate, with inland Diablo Valley summer highs frequently exceeding 95 degrees and a long fire-season smoke window each fall. Hot summers stress thermal-management systems on hybrid and EV powertrains.

Major routes:  I-680 · CA-242 · CA-4

EV and hybrid battery thermal management complaints

Hot Diablo Valley summers regularly exceed 95 degrees, and heat-soak in uncovered driveways and surface lots stresses high-voltage battery cooling loops, producing recurring thermal-derate codes and capacity-loss complaints on the area's growing BEV and PHEV fleet.

Cooling system and AC failures

Sustained summer heat through the Diablo Valley accelerates radiator, water pump, and AC compressor wear; chronic AC weak-cooling complaints and engine overheating codes are common Song-Beverly fact patterns on vehicles regularly parked outdoors in Concord.

ADAS and infotainment glitches in wildfire smoke

Annual wildfire-smoke episodes saturate cabin air filters and load forward-facing camera and radar housings with particulate, triggering recurring lane-departure, automatic-emergency-braking, and adaptive-cruise faults that consumers report repeatedly to dealers without permanent fix.

Dealership clusters

Concord is the East Bay's principal auto-row city, with franchise dealerships concentrated along Concord Avenue and the I-680 corridor between the Diamond Boulevard and Willow Pass Road exits — collectively known locally as the Concord Auto Row. Additional rooftops sit in neighboring Walnut Creek along Mt. Diablo Boulevard and in Pleasant Hill, both within a short drive for Concord owners.

Brands we see most

Concord's vehicle mix is heavily mainstream Japanese (Toyota, Honda, Subaru, Nissan), with strong domestic truck representation (Ford, Chevrolet, Ram) for Tri-Valley and Delta-region contractors, plus rapidly growing Tesla and other BEV registrations driven by the I-680 commute to Silicon Valley.

Areas served around Concord

  • Clayton Valley
  • Dana Estates
  • Holbrook Heights
  • Monument Corridor
  • Crossings
  • Ygnacio 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 Concord, CA

Where do Concord residents file a California lemon law lawsuit?

Most Concord Song-Beverly cases are filed in the Contra Costa County Superior Court at the Wakefield Taylor Courthouse in Martinez (725 Court Street), the county's main civil unlimited courthouse. Venue is also potentially proper where the contract was signed or where the defendant manufacturer does business in California, so depending on facts an attorney may choose a different Bay Area county to file.

My Tesla has had multiple drive-unit or battery-cooling repairs — does that qualify?

Recurring drive-unit replacements, HV-battery cooling fault codes, suspension control-arm complaints, and infotainment reboots are among the most common Tesla Song-Beverly patterns reported by East Bay owners. The Tanner Act presumption applies if there are four or more repair attempts for the same defect within 18 months or 18,000 miles, or 30 cumulative days out of service. Tesla service-center 'invoices' and mobile-service work orders both count as repair attempts; bring all of them to your consultation.

I bought my car in Walnut Creek or Pleasant Hill — can I still file in Contra Costa?

Yes. Walnut Creek and Pleasant Hill are both in Contra Costa County, so the Wakefield Taylor Courthouse in Martinez remains the natural venue. If you purchased in Alameda County (e.g., Fremont, Oakland, Dublin), venue is also proper there, and an attorney may file in either county depending on case-management timelines and judge assignments.

Does my used certified pre-owned (CPO) car qualify under California lemon law?

In many cases, yes. Cal. Civ. Code 1795.5 extends Song-Beverly's repair-or-replace obligations to used vehicles sold with a written warranty, including most manufacturer CPO programs. A used vehicle still within the original new-car warranty period is also covered against the original manufacturer. The duration of the implied warranty for used vehicles is the same as the written warranty's duration but cannot exceed three months.

How does the mileage offset work in California?

Cal. Civ. Code 1793.2(d)(2)(C) reduces your refund by a 'use offset' calculated as (purchase price x miles driven before first repair attempt for the nonconformity) / 120,000. So if you bought a $50,000 vehicle and brought it in at 5,000 miles for the first complaint about the defect, the offset would be roughly $2,083. The offset is anchored to the FIRST repair attempt — not the current odometer — which is why early documentation matters.

What if my Concord-area dealer keeps telling me there's 'no problem found'?

Each documented visit for the same complaint counts as a repair attempt under Song-Beverly even if the repair order says 'no problem found' or 'unable to duplicate.' Keep every repair order, request a copy at each visit, and document symptoms in writing (photos, video, dashcam clips). If you have four documented visits for the same complaint within 18 months or 18,000 miles, the Tanner Act presumption may apply regardless of what the technician wrote.

Do I have to use BBB AUTO LINE or arbitration before suing in California?

Only if the manufacturer maintains a qualified third-party dispute resolution program that substantially complies with Cal. Civ. Code 1793.22 and FTC Rule 703, AND you want to invoke the Tanner Act presumption. Even then, arbitration is not a prerequisite to filing a Song-Beverly lawsuit — you can sue directly under the Act. Many California manufacturers no longer participate in BBB AUTO LINE, so for most Concord owners arbitration is not a required first step.

Stuck with a lemon in Concord?

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