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Damn you, cheap gas: Average US new-car fuel economy dips again

Recent dips in gas prices have sent buyers scrambling back to trucks and crossovers.

Andrew Krok Reviews Editor / Cars
Cars are Andrew's jam, as is strawberry. After spending years as a regular ol' car fanatic, he started working his way through the echelons of the automotive industry, starting out as social-media director of a small European-focused garage outside of Chicago. From there, he moved to the editorial side, penning several written features in Total 911 Magazine before becoming a full-time auto writer, first for a local Chicago outlet and then for CNET Cars.
Andrew Krok
Michele Sandberg, Corbis via Getty Images

Each month, the University of Michigan's Transportation Research Institute (UMTRI) tracks sales-weighted fuel economy ratings of new cars purchased in the US. Its data goes back to October 2007, and there have been solid gains since it began. Last month bucked that trend, though, and as a result we've seen the average fall once again.

Thankfully, it's not that big of a dip. May 2016's value was 25.4 miles per gallon, and June's is but 25.3. It's not necessarily surprising, either -- over the last year, we've seen the graph take a bit of a downturn as gas became cheaper and more Americans jumped on the crossover bandwagon. Sadly, that bandwagon contains no actual wagons, because we refuse to buy them for whatever silly reason.

The chart peaked in August 2014, when average economy was 25.8 mpg. That's also when gas was outrageously expensive, with the national average around $3.70 per gallon. As the price has gone down, buyers have moved away from more fuel-efficient vehicles.

We've been in a sort of holding pattern for about a year now, with average fuel economy rising and falling several times. It's likely that the 2016 model year average will hold steady, as it has done for the two model years before that. Unless gas prices shoot back into the ionosphere, we're likely to see stagnation until automakers start ramping up fleet fuel economy ahead of tightening Corporate Average Fuel Economy (CAFE) regulations, which is set to happen in the next decade.

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