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BECAUSE THEY ARE HEAVIER, EPA ESTIMATES AWD VEHICLES LOSE 1 TO 2 MPG OVER 2WD VEHICLES
ALL- WHEEL DRIVE
FOUR - WHEEL DRIVEVS
AWD
4WD
AWD IS CONSTANTLY ON
COMPUTERS DETERMINE HOW MUCH POWER TO GENERATE ON EACH WHEEL
SENSORS MONITOR TRACTION, SPEED, AND OTHER DATA POINTS HUNDREDS OF TIMES A SECOND
4WD SYSTEMS ARE TYPICALLY USED BY OFF-ROAD VEHICLES
POWER GOES FROM THE TRANSMISSION TO A TRANSFER CASE WHERE IT IS DIVIDED BETWEEN FRONT AND REAR AXELS
ALL WHEELS are moving at the SAME SPEED
DRIVING UNDER NORMAL CONDITIONS IS MORE DIFFICULT
TO COMBAT, MODERN 4WD VEHICLES OPERATE IN 2WD IN NORMAL CONDITIONS
AWD VEHICLES DON’T PERFORM ASWELL IN EXTREME OFFROAD CONDITIONS
4WD VEHICLES CAN BE THE BEST VEHICLES FORSNOW COVERED ROADS
THE ABILITY TO OPERATE IN 2WD BOOSTS FUEL ECONOMY OF 4WD VEHICLESBOOSTS FUEL ECONOMY
AWD = ALLWEATHER DRIVINGALLWEATHER DRIVING
4WD = ALLTERRAIN DRIVINGALLTERRAIN DRIVING