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How to tell if a car meets California emission standards?

To determine if a car meets California's strict emission standards, you'll need to check the vehicle's certification and documentation. California has some of the most stringent air pollution regulations in the United States, so it's important to ensure your vehicle complies with the state's emission requirements.


Understanding California Emission Standards


California's emission standards are set by the California Air Resources Board (CARB) and are often more stringent than the federal standards set by the Environmental Protection Agency (EPA). CARB's regulations aim to reduce the amount of harmful pollutants, such as nitrogen oxides, particulate matter, and greenhouse gases, emitted by vehicles.


The specific emission standards a vehicle must meet depend on the model year, vehicle type, and fuel type. Newer vehicles are generally subject to stricter emission limits, and vehicles that run on alternative fuels like electric or hybrid may have different requirements.


Checking a Vehicle's Emission Certification



  • Look for the vehicle's emission control information label, usually located under the hood or on the driver's side doorjamb. This label will indicate the vehicle's emission certification, including the specific CARB or EPA standards it meets.

  • Check the vehicle's owner's manual or manufacturer's documentation for information on the emission certification and any applicable CARB or EPA standards.

  • If the vehicle has been modified or has aftermarket parts installed, it may no longer meet the original emission certification. In this case, you'll need to have the vehicle inspected and recertified to ensure it complies with California's emission requirements.


By understanding the emission standards and properly checking your vehicle's certification, you can ensure that your car is in compliance with California's strict environmental regulations.

Do all cars meet California emissions?


Because California is such a huge market, many automakers choose to make just one version (the California emissions version) of a particular model and sell it nationwide. Even if you buy a brand-new vehicle in Ohio, there's a good chance it will come with California emissions equipment.



How to know if a car has California emissions?


All vehicles that comply with California regulations have a Vehicle Emissions Information label on a visible location on the vehicle. In addition to listing all equipment used on the vehicle to comply with California requirements, the label lists the vehicles test group or Engine family Number.



Can I register a non-California emissions car in California?


If your direct foreign import vehicle was not originally manufactured to meet California emissions standards and DOT FMVSS, the vehicle cannot be registered in California, unless the vehicle is modified and tested under CARB's direct import program.



What cars are exempt from emissions in CA?


Your vehicle does not need a smog inspection if your:
Diesel-powered vehicle is a 1997 and older year model OR with a Gross Vehicle Weight of more than 14,000 pounds. Powered by natural gas and weighs more than 14,000 pounds. An electric vehicle. Gasoline-powered and less than eight model-years old.



What year cars are exempt from emissions in California?


1975 year
Smog inspections are required when you register or renew registration for a vehicle in California, but there are some exceptions. Your vehicle does not need a smog inspection if your: Gasoline-powered vehicle is a 1975 year model or older (This includes motorcycles and trailers.)



How to check if your car is due for emissions?


When you need to renew your vehicle registration, part of that renewal notification will usually include a reminder that you're due for an emissions test.



Where is the emissions sticker in California?


California Air Resources Board
The Vehicle Emission Control Information label is located in the engine compartment in a clearly visible position, most often directly on the underside of the hood.



How do I check the emission level of my car?


Using data from the DVLA and emissions standards published by TfL, our ULEZ checker tool uses your vehicle's reg to check if your car meets the Euro emissions standards that qualify it as low-polluting. We can then confirm if your vehicle is compliant or non-compliant.



How can you determine if a vehicle is eligible for California emissions coverage?


You can identify a CA or Federal vehicle by the emissions system label. Try looking in the door jamb, on the front radiator support, strut tower plate, or under the engine hood. The label will say something along the lines of "This vehicle conforms to... regulations applicable to...".



Do old cars have to pass emissions in California?


All vehicles that are model-year 1975 and older do not require a Smog Check.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.