Hi guys, I’m new to the forum. As the title suggests, my cars mpg has suddenly dropped and I don’t know why. I was getting 49 mpg for the first 3 months or so, 670 miles to a full tank, but now it’s gone down to 37 ish, 530 or so miles to the full tank. I know the weather is a lot colder now but surely that wouldn’t reduce the mpg by 24%? Anything spring to mind I could check if you guys think there’s something amiss. Driving style and commute hasn’t changed. I’ve just had it serviced too so the oil and filter are brand new. thanks in advance!