why low MPG

Asked by Mar 14, 2017 at 01:20 PM about the 2005 Pontiac Bonneville SLE

Question type: Maintenance & Repair

getting 10 MPG. was getting 28 MPG

2 Answers

76,775

That is a major drop in mileage. I would start with a tune up and filter change. Have the catalytic converter inspected and make sure they check the plugs for carbon fouling in case you have a leaking fuel injector.

1 of 1 people found this helpful.
254,435

Is the vehicle running poorly? Check engine light on? Any new noises?

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