I used to get a consistent 19-21 around town and some highway. The last month it's a struggle to get 18. I'm assuming winter fuel and using heated seats and heater/blower is the cause.
using sport mode on highway. Truck has 980 miles and 285/70/17 Falken Wildpeak AT4W tires.
Tried eco mode - ok ok mpg. Normal mode not too bad. Sport mode big difference.