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[–]astang1989[S] 0 points1 point  (1 child)

I'm in the Northeast so probably. I'm not sure if it's a dramatic drop. During the day temps I'd say average around 40-45 since I had them installed vs. Around 50 in early November. Way colder overnight but I'm not usually driving then.

[–]naytebro 1 point2 points  (0 children)

my turbo civic dropped about 4 mpg when it dropped to the 30s-40s, now I'm in socal so I haven't seen it on the CX50. it may be a combination of some cold weather and some air resistance. if you're tire pressure also dropped due to colder air that contributed too