Know your rights before you approve the repair.
Plain-English guides to the rules every California repair shop has to follow, plus smog, used-car and lemon-law basics. Every guide links to the official source it's built on.
- 01Written estimate before any workRequired by Bus. & Prof. Code 9884.9
- 02Your OK before the price goes upRecorded on the work order and invoice
- 03Your old parts backIf you ask when you authorize the job
- 04An itemized invoiceWith the shop's BAR registration number
Start here
- Your Rights
Your Rights at a California Auto Repair Shop
Written estimates, approval before the price goes up, your old parts and a real invoice. California's Automotive Repair Act spells all of it out.
- Your Rights
How to Check a California Auto Repair Shop's License
Two free state lookups tell you whether a shop is registered, whether its license is valid, and whether BAR has taken action against it.
- Smog & Emissions
Smog Check in San Diego: Who Needs One and When
Most San Diego drivers need a smog check every other year, plus when a car changes hands. The exemptions are narrower than people think.
Latest guides
- Theft & 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 & 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 min
Check 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 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 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 & 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.
Sources first. Opinions labeled.
Our guides are built from California statutes and agency guidance from BAR, the DMV, CARB and the Department of Consumer Affairs, and each one lists its sources and the month we last checked them.
Our guides don't recommend specific shops. Featured shop profiles are labeled as featured, and you can read how they work on our about and disclosures page.