What factors affect fuel economy?

There are many factors that may affect fuel economy. Some of them include:

  • Quick acceleration and heavy braking
  • Excessive idling
  • Operating in cold weather and on frequent short trips
  • Added weight of cargo or cargo racks
  • Towing
  • Running electrical accessories
  • Driving on steep terrain
  • Using 4-wheel drive (on equipped vehicles)
  • Improper maintenance
  • Improperly aligned or under inflated tires
  • Dirty air filter
  • Poor fuel quality
  • Use of Air Conditioning