OK so now we have more honest MPG Gov, data. When will they

[heidler1]

begin to include tail pipe volume in smog testing? Vehicles are and have been tested by the percentage of pollutants in the tailpipe output so a large engine vehicle that passes the test might put out 4 or 5 times on a quantity basis compared to a smaller engine. Those that have poor MPG ratings are also creating more than their share of the pollution.

[Kolesar]

1. Do you think that EPA efficiency tests account for aerodynamics at highway speeds?

I have been wondering if companies who do a lot of aerodynamic engineering on cars like the Toyota Camry or the Dodge Caravan get any credit for the development that they do.

(Sorry to sidetrack your thread)

[heidler1]

2. It would be strange indeed to find out the Gov, did anything in a total investigative way.

One thing I'm pretty sure of is that any total truth would come in second to sales bias. Look at the drug Companies, they lie about everything they think they can get by with. Those with aerodynamic slick cars would still benefit by getting better MPG. IMO it would cause trouble to give them a license to drive faster that others.

Back to the OP if you include the cubic inches of the engine in the smog test and set the fees by total volume of exhaust gases large engines whether for speed or for loads hauled this would discourage large engines and improve our dependence on foreign oil, help prevent global warming and the dangerous trade balance.