Jalopnik reported that General Motors had to stop sales on 60,000 crossovers because the labeled fuel economy ratings were wrong by one or two miles per gallon. And just last month, Mitsubishi got in trouble for messing with tire pressures to get better MPG ratings, a few years ago overstated fuel economy numbers cost Hyundai a ton of money. All these guys cheated or made mistakes for 1 or 2 MPG because our current rating system is stupid.
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Earthgarage – Greener Car. Fatter Wallet