• Daisy Castillo

Do hybrids and diesels need smog checks?

All hybrid vehicles are now subjected to a smog check, after basically being exempted since their release dates in 2000. When Hybrids were first put on the market, a smog test could not be conducted due to the inadequacy of the equipment for the hybrid vehicles. The vehicles could not be tested with the traditional tailpipe test due to the hybrid changing over to it's electric motor when traveling in low speeds. Now with the Biennial Smog Test, Hybrid Vehicles are being tested and checked. According to,


"All hybrid vehicles will be subject to a Smog Check. Just like traditional gasoline-powered vehicles, hybrid vehicles six model-years and newer are exempt from the biennial Smog Check requirement. Hybrid vehicles four model-years and newer are also exempt from the change-of-ownership Smog Check requirement." In regards to diesel vehicles, those models that were manufactured prior to 1998 or with a GVWR of 14 thousand pounds, electric, natural gas powered vehicles over 14 thousand pounds, motorcycles, trailers, and gas powered vehicles 1975 and older, will be exempted from smog checks. Beside that, all other vehicles are subjected to a smog check, or will be charged until a smog check has been conducted on the motor vehicle.



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