M52 + 6sp + 3.15 = 33mpg

[nrubenstein]

there was no "new test" for older cars.

So what? It's not reasonable to calculate an average equivalent change and apply it? Anyway, given that the tests are calculated based on tailpipe emissions, I don't know why anyone really cares, unless they have to pay gas guzzler.

Of course, if it's above 75, I do in fact run the A/C when my windows are open. :) The cooling breeze makes the fresh air more enjoyable.