he Motor Vehicle Safety Compliance Act of 1988 ended import of grey-market vehicles to the USA. No evidence was presented that grey-import vehicles’ safety performance differed significantly from that of US models.
Canada emissions have the 15-year-old rule and their emissions testing is not much different.
* Differences between U.S. vehicles safety standards and the rest of the world are shrinking all the time. Most 15-year-old cars coming from Canada, Europe, or Japan will not be significantly different in safety or emissions.
*There’s no reason why rules couldn’t be relaxed with no real detriment to safety or environment.