Nothing new. They did that for my 20 yr old cars too. They rated the sedan and wagon the same mpg, even though the wagon is about 300-400 lbs more and every one of these wagons Ive seen has a roof rack. They also rated the Pontiac 1 mpg better than the Chevy, even though they are identical powertrains, electronics, and 99% identical sheetmetal.
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Winter daily driver, parked most days right now
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Summer daily driver
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