Actual Mileage and EPA Fuel Economy Estimates Comparison.
Fuel Economy Factors
Improving Fuel Economy
DTC 21-1x ("x" can be 0 thru 9 or A thru F):
Open or Increased Resistance in Driver's Seat
Belt Tensioner
DTC 32-8x ("x" can be 0 thru 9 or A thru F):
Short to Power in Front Passenger's Side
Airbag Inflator