I have a 2008 Mitsubishi Outlander XLS V6 with 125,000 miles on 2WD mode I was usually able to get 24-28 MPG now I am lucky if I reach 20-22 MPG. What can I do to increase my miles per gallon? What could be the issue?
thebax2006
Favorite Answer
Did you replace the spark plugs and air filter yet?
Even if the vehicle came with Iridium spark plugs from the factory thy need changing between 90,000 and 100,000 miles.
Only NGK or Denso brand spark plugs can be used in a Mitsubishi.
Bort
Preventative Maintenance.
Have a tune up, coolant flush, and oil change done.
JetDoc
When was the last time you had a complete tune up done on your car? New spark plugs and cables, new fuel injectors, replace all filters, etc. Your 11-year-old car probably won't EVER get the same fuel mileage and performance as when it was brand new, but with proper care and maintenance, it can come close.
CB
First thing you do is make sure all maintenance is up to date. Plugs, ignition wires, air filter, all will have detrimental affects on MPG is not changed on the correct intervals. Tire pressure, change in tire size (bigger tires will make it seem like mpg is down because going farther on every revolution)
?
Try the universal fuel savers of removing unnecessary weight and making sure the tire pressures are correct, as well as driving carefully. Other than that a good service will doubtless help. I'd be looking at replacing air filter, spark plugs etc. if that isn't covered in the service.