Why has my MPG suddenly dropped?
Why has my MPG suddenly dropped? Here are some the main causes for a sudden drop in gas mileage: Bad oxygen sensor and air filters-in all forms will affect the fuel mixture and your fuel efficiency. Dirty, Bad or leaking fuel injectors or fuel pump-will also affect the fuel mixture and lead to slow acceleration, loss of power and fuel inefficiency. Are car trip computers accurate? All new cars now have a way to zero out the MPG average. On some, it can be automatically reset when one fills up the car. On all the rest, one simply zeros it...