Repair advice you can check.
Every guide is built from California law and official agency guidance, and links to the sources it used so you can verify it yourself.
All guides
- Theft & SecurityTheft & Security5 min
Catalytic Converter Theft: What California Law Does and How to Protect Your Car
California's SB 1087 and AB 1740 restrict who can sell and buy used catalytic converters. What the laws require, what they don't, and practical steps San Diego drivers can take.
- Smog & EmissionsSmog & Emissions4 min
Clean Cars 4 All in San Diego: Up to $12,000 to Replace an Old Car
San Diego County's Clean Cars 4 All program offers up to $12,000 toward a cleaner vehicle, or up to $7,500 for transit and e-bikes, when you scrap an older car. Eligibility explained.
Diagnostics6 minCheck Engine Light On? What to Do Before You Pay a Shop
A check engine light means a stored diagnostic trouble code, not a diagnosis. How to read the code, what it can and can't tell you, and how to get a fair diagnostic estimate in California.
- Buying a CarBuying a Car5 min
California Lemon Law Basics: The 18-Month Presumption
When a new car qualifies as a lemon in California: 4 repair attempts, 2 for safety defects or 30 days in the shop within 18 months or 18,000 miles, plus what changed in 2025.
- Buying a CarBuying a Car6 min
California's CARS Act: The New 3-Day Used Car Return Right
Since Oct. 1, 2026, California dealers must let you return a used car priced at $50,000 or less within 3 days. The mileage cap, restocking fee and other CARS Act rules explained.
- Smog & EmissionsSmog & Emissions7 min
Smog Check in San Diego: Who Needs One and When
Which vehicles need a California Smog Check, the 8-year and 4-year exemptions, what sellers owe buyers, STAR stations and when to call the Smog Check Referee.
- Smog & EmissionsSmog & Emissions6 min
California CAP: Help Paying for Smog Repairs or Retiring Your Car
California's Consumer Assistance Program pays up to $1,450 toward smog repairs or up to $2,000 to retire a car that failed. Amounts, income limits and the step people skip.
- Your RightsYour Rights5 min
How to Check a California Auto Repair Shop's License
Look up any California repair shop's BAR registration in two minutes, spot accusations or probation, and know how to file a complaint if a repair goes wrong.