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Old 05-04-2012, 02:02 PM
ftg ftg is online now
Join Date: Feb 2001
Location: Not the PNW :-(
Posts: 16,292
Originally Posted by Baracus View Post
But the EPA standards are based on emissions in grams/mile, so mileage is, in fact, taken into account.
Thanks for the info. The EPA in doing it's own cert. testing does appear to take miles into account for new models (and does "age testing" of those models).

I was going on the once a year emissions testing we go thru in some regions which are intended to make sure our vehicles stay without limits. Here, it's just a test on a roller at two speeds, both of which have the same spec. set.

These annual emission tests are mandated (in many cases) by the Feds and implemented by the states, in those counties that exceed pollution limits. So they are "Fed" rules that are trickled down.