Can the vehicle pass the inspection after replacing the engine with a different model?
3 Answers
Replacing the engine with a different model can pass the inspection, provided that the engine replacement is registered with the vehicle management office. Relevant regulations: Article 10 of the "Motor Vehicle Registration Regulations": If a registered motor vehicle falls under any of the following circumstances, the owner of the motor vehicle shall apply for registration of changes to the local vehicle management office: changing the body color, replacing the engine, or replacing the body or frame. Change procedures: The original and copy of the owner's ID card (for non-local residents, the original and copy of the temporary residence permit are required), proof of engine replacement, engine number rubbing, vehicle information change application form, vehicle license, and driver's license.
I'm the cautious type, and to be honest, swapping an engine is quite a hassle. Vehicle annual inspections mainly check if the engine number matches the one registered on the vehicle license. Installing a different engine model will definitely fail the inspection. I know quite a few friends who modified their cars and got stuck at the inspection station because the engine numbers didn't match. Nowadays, inspections are extremely strict—they even scan the anti-counterfeit codes on the engine block, let alone issues with mismatched model numbers. If you're really set on modifying, it's best to first consult the DMV about the modification procedures. But honestly, such major modifications come with high risks. You might even need to redo the entire vehicle safety certification, which is time-consuming, costly, and not guaranteed to succeed.
As someone who frequently helps friends with their cars, I've noticed that many people are unaware of the rules regarding engine replacement. In practice, the vehicle management office will cross-check the information on the engine nameplate with the chassis number. Different engine models may have varying power outputs and emission standards that don't match the original vehicle parameters. I've personally handled cases where, despite installing a more advanced engine, the vehicle failed inspection because the exhaust emission data didn't align with the original standards. This issue can be particularly hidden during the first six years when new cars are exempt from on-site inspections, only to surface during mandatory annual checks. My advice is to prioritize using the same model of used parts if you must replace an engine.
