Which Cars Are Exempt from Smog Checks in California? (2026 Update)

Not every vehicle on California roads is required to undergo a biennial smog check. The state provides several exemptions based on the vehicle's age, fuel type, and registration status. Here's a comprehensive breakdown of who's exempt—and who isn't—as of 2026.

Vehicles Model Year 1975 or Older (Gasoline)

Gasoline-powered vehicles that are model year 1975 or older are completely exempt from smog check requirements. This exemption covers classic cars, hot rods, and vintage vehicles. These cars predate modern emission control systems, so California does not require them to pass an emissions inspection. (Note: pending legislation could extend a collector-car exemption to newer classics—see our explainer on SB 1392, “Jay Leno's Law”.)

New Vehicles (First 8 Model Years)

Vehicles that are less than eight model years old are generally exempt from the biennial smog check. For example, in 2026, vehicles from model year 2019 and newer are exempt. However, new vehicle owners typically pay a smog abatement fee at registration instead of getting a smog check.

Important exception: the eight-model-year exemption applies to registration renewal only. A change of ownership and an out-of-state registration follow their own rules. For a change of ownership, vehicles that are four model years and newer are exempt (a smog transfer fee is paid to the DMV instead); once a vehicle is older than that, a smog check is required to transfer it—even if it's still inside its first eight model years. Transfers between immediate family members generally don't require one.

Electric Vehicles (EVs)

Fully electric vehicles—including popular models like the Tesla Model 3, Chevy Bolt, Nissan Leaf, and Rivian R1T—are exempt from smog checks. Since they produce zero tailpipe emissions, there is nothing to test.

Plug-In Hybrids (PHEVs)

Plug-in hybrid vehicles are not exempt. Because they have a gasoline engine that produces emissions, PHEVs are subject to the same smog check requirements as conventional gasoline vehicles. Models like the Toyota Prius Prime and Chevy Volt plug-in still need regular testing.

Standard Hybrids

Regular hybrids (non-plug-in) such as the Toyota Prius, Honda Insight, and Ford Escape Hybrid are subject to smog checks. They have gasoline engines and produce emissions, so they must comply with California's testing requirements.

Diesel Vehicles

• Diesel vehicles model year 1997 or older are exempt
• Diesel vehicles with a GVWR over 14,000 lbs (heavy-duty) are exempt from the BAR smog check program but may be subject to CARB's Periodic Smoke Inspection Program (PSIP)
• Light-duty diesel vehicles 1998 and newer are required to pass a smog check

Motorcycles

Motorcycles are exempt from the California Smog Check Program regardless of their age or engine type.

Natural Gas & Propane Vehicles

This one is commonly misunderstood. Natural gas vehicles are exempt only when they have a gross vehicle weight rating over 14,000 pounds. A light-duty natural gas or propane vehicle is treated as an alternative-fuel vehicle and follows the same smog check rules as a gasoline car, including the same model-year exceptions.

Hybrid and Electric Vehicles: The Questions We Get Most

Hybrids and EVs come up more than any other category at our Pasadena station, and the confusion is understandable—they get grouped together in conversation even though California treats them very differently. Here's the short version.

Do hybrid cars need a smog check in California?

Yes. Both standard hybrids and plug-in hybrids have a gasoline engine, so the state treats them like any other gasoline vehicle. That means the same timeline as a conventional car: no smog check at registration renewal while the vehicle is eight model-years and newer, then a check at renewal (every other year) once it's older than that. Being a hybrid doesn't shorten or extend that schedule. Note that this eight-year window covers renewal only. Selling the car follows the four-model-year rule above, and registering a vehicle in California for the first time—including one purchased or previously registered in another state—requires a smog check regardless of those model-year windows.

Are electric cars exempt from smog checks?

Yes. The DMV lists “an electric vehicle” among the vehicles that do not need a smog inspection. A battery-electric car has no gasoline engine and no tailpipe emissions, so there is nothing for the inspection to measure. This is a genuine exemption, not a deferral—it doesn't expire as the car ages.

What about a plug-in hybrid—doesn't it count as electric?

Not for smog purposes. A plug-in hybrid can drive on battery power alone, but it still carries a gasoline engine and the emissions equipment that goes with it, so it follows the gasoline rules. This is the single most common mix-up we see: owners assume “plugs in” means “exempt,” and it doesn't.

Is a hybrid inspected differently than a regular gas car?

No—a hybrid is inspected under the same California standards that apply to any other gasoline vehicle of the same model year. Bring it in the same way you would any car.

My hybrid is brand new. Do I need anything?

Not for renewal. While the vehicle is eight model-years and newer, you pay a state smog abatement fee with your DMV registration renewal instead of getting tested—that fee goes to the DMV, not to a smog station. Selling it is the case to watch: once it's older than four model years, a change of ownership needs a smog check even though renewal doesn't. For the full picture on timing, see how often you need a smog check in California.

One more special case: if your vehicle is modified or running aftermarket parts, being non-exempt comes with an extra wrinkle—emissions-related parts need a CARB exemption to pass the visual inspection. Our guide to what “CARB compliant” means for your smog check explains EO numbers and how modified cars are inspected.

Not Sure If Your Vehicle Needs a Check?

Bringing a car back after a long layoff? See our guide to smog checks for non-op (PNO) vehicles, which covers the permit you need to move it legally.

The easiest way to confirm is to check your DMV renewal notice—it will clearly state whether a smog check is required. You can also call us at (626) 798-0049—we're happy to talk through what your renewal notice requires.

And if your vehicle does need its check, our STAR certified station is minutes away for drivers across the area—see our smog check services in Pasadena, or your local page for Altadena, Arcadia, San Marino, Alhambra, or La Cañada Flintridge.