What Mazda said doesn't surprise me at all. If a fuel economy feature doesn't show up in EPA tests, how is it relevant to the consumer? It adds to the price of the car, but the consumer doesn't have any information that says it will increase fuel economy by a significant amount. That's a loser for business, and Mazda is a business.
Car companies are not trying to build cars that get good MPG, they are building cars that will sell.
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