Quote:
Originally Posted by cfg83
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You're graph quotes grams per kWh which is a different way of measuring engine power, just like hp. So if you wthink about it, typically a u.s. car has alot more horsepower than a typical u.k or japanese car. So lets say you have a u.s. car with 150hp and puts out 2g/hp. It would put out 300g correct(not saying constantly, but just keep reading.) a u.k. car with 70hp and 3g/hp would put out 210g. So on your graph the us car would apear 2/3 cleaner than the uk car, when infact the uk car would be the one putting out about 2/3 the emissions of the us car. Yes the us has stricter per kWh standards, but that's because we have these crazy big cars that have to have tons of horsepower as well as the fact that we have so many freaking cars on the road the per kWh standard has to be tighter to even come close to the uk or japan. That graph is a horrible example and just looks good to people who don't understand what it really means. A g/km or g/mile representation would show better how dirty our cars are in comparison.