Mileage can vary considerably with speed limits, lifestyle changes as well as temperature. In my case, before COVID lockdowns, my lifestyle and auto usage was unusually regular. 12 miles trip every morning, 40 and 50 mph roads, cruise control, 7 days a week to the mall for mall walking, 12 mile return. Fill-up every Saturday on a return trip from the mall at the same gas station and fuel type. A couple local trips each week for shopping and occasional longer trip to doctor/dentist. It's great to be retired!
I rarely use the AC, even during hot summer days, preferring, open windows and fresh air.
Summer maximum: 28 US mpg , temps around 80s-90s F
Winter Minimum: 22 US mpg, temps down to single digits (8-9 F)
~ 21% mileage loss in the winter.
After COVID lockdowns, malls closed, etc, my fuel mileage became very irregular, mostly infrequent local trips, filing up about once a month instead of once a week.
I'm not showing it here, but at the end of March, this year, I made a drive to Chicago suburbs from western NJ. Route 80 all the way. I had very strong headwinds (30-40 mph and gusty), temp was high 20s to low 30s (F), and I average about 23-24 mpg, 65-70 mph highway. I was expecting to get about 30 mpg.
On the the return drive, multiple wind snow squalls from the north (from my left as I was driving east), and I averaged about 26-28 mpg, slowing to as little as 40-45 mph during the heaviest snow squalls (visibility zero! I never want to be in that situation again!).
That one outlier at 05/17/17 was a mix of 40, 50 and 65 mph roads. I just went cruising that day to see what max mileage I could expect from my 6 month old car. 31.0 mpg on a 270 mile drive.
The '17 has the newer 2.0L engine and twin scroll turbo charger.
EPA mileage ratings (City/Highway/Combined)
2014 2.0L AWD: 21/28/24
2017 2.0L AWD: 20/27/23