Which vehicles are smog exempt in California? A model-year guide
Gasoline cars 1975 and older, diesels 1997 and older, electric vehicles and newer gas cars. See who skips the smog check.
By the Blaze Smog team · September 25, 2026 · 5 min read
Exempt because of age or fuel type
California smog checks are built around the emissions equipment on a vehicle, so some vehicles are left out entirely. According to the California Bureau of Automotive Repair (BAR) and the DMV, these are exempt:
- Gasoline, hybrid and alternative-fuel vehicles from model year 1975 and older
- Diesel vehicles from model year 1997 and older
- Diesel vehicles over 14,000 lbs gross vehicle weight rating (GVWR)
- Fully electric vehicles
- Motorcycles and trailers
Newer gasoline vehicles: the 8-year rule
Gasoline, hybrid and alternative-fuel vehicles that are 8 model years old or newer do not need a smog check when you renew your registration. Instead, the state charges a smog abatement fee. To find when your first renewal smog check is due, add eight to the model year. A 2020 model-year vehicle, for example, is first due in 2028.
Newer vehicles and change of ownership: the 4-year rule
A separate, shorter rule covers selling a vehicle. A gasoline vehicle that is less than 4 model years old does not need a smog check when it changes owners. The buyer pays a smog transfer fee to the DMV instead.
Diesels are different
The newer-vehicle exemption applies to gasoline, hybrid and alternative-fuel vehicles. Diesel vehicles from 1998 and newer that weigh 14,000 lbs GVWR or less need a smog check and do not get a newer-model-year exemption. Read our diesel smog check page for details.
Are hybrids exempt?
No. A hybrid follows the same rules as a gasoline vehicle: the same 8-year and 4-year exemptions for newer models, and a smog check once it ages out. Only fully electric vehicles are exempt.
Family transfers
Moving a vehicle between close family members does not require a smog check. There is a catch. The DMV says that if a family member gave you a car they bought for you without first putting it in their own name, a smog inspection is required. Confirm your situation with the DMV before you transfer.
Does where I live matter?
Yes. The DMV requires smog checks at registration renewal in 33 California counties, including Los Angeles County, where Redondo Beach, Lawndale and Hawthorne are located. A few rural counties are outside that renewal program. Ownership transfers and first-time California registrations have their own rules.
The safest way to check
Your DMV registration renewal notice states whether a smog check is required for your vehicle this year. If it says smog check required, it is required, and you can drive in to Blaze Smog without an appointment. If you are unsure, call us at 424-354-6111 and we will help you sort it out.
See also our California smog check guide for the full list.
Sources: the California Bureau of Automotive Repair and the DMV smog check pages. Rules and fees can change, so always check your DMV renewal notice for what applies to your vehicle. This article is general information, not legal advice.
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Read articleNeed a smog check? Just drive in.
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