Huge Sunroofs Can Burn You At The Pump

That huge sunroof on top of you greenhouse could cost you more than just a few extra $$$$. It could ruin the car's mileage, says a new report. "Automakers may be obsessed with cutting vehicle weight," writes Automotive News [sub], "but they are happily packing on pounds in one place." Those added lbs will mean increased gals, and not the female kind. Cars like the 2013 Lincoln MKZ, or the Cadillac's SRX crossover sport sunroofs that come close to the size of a Japanese starter home. "The glass can add several more pounds than steel, depending on the size of the opening," says the report. "And an open sunroof interrupts airflow over a vehicle, increasing drag and reducing fuel economy." Automakers already carefully monitor the take rates of those skylights: "If the heavier sunroofs make up more than a third of a vehicle's production mix, the vehicle's fuel-economy testing must include the feature."   from The Truth About Cars http://www.thetruthaboutcars.com

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