Gas mileage spiking 2021 CX-9
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Junior Member
Joined: Feb 2023
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From: Mississauga
Gas mileage spiking 2021 CX-9
Have driven this vehicle for 2 years, 40,000 kms and the overall average has been 10.2 l/100km.
Recently it has been creeping up to 13 and now 14. Did a reset on trip B and it started off at 28 then settled back down to 14.5. Seems to be running normally, not rough, no hesitation. Starts fine. Any likely causes/solutions?
Recently it has been creeping up to 13 and now 14. Did a reset on trip B and it started off at 28 then settled back down to 14.5. Seems to be running normally, not rough, no hesitation. Starts fine. Any likely causes/solutions?
Senior Member
Joined: Oct 2018
Posts: 10,664
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From: Northern California
When did you change:
Spark plugs
Air filter
Coils
coil boots and springs
engine oil and oil filter
basic first transmission pan fluid cand filter change
Checked coolant condition
When did you service:
Throttle body
MAP
IAT
Have you checked the condition of the tires and verified the correct COLD psi?
Have you changed where you get gas or different company then normal
Spark plugs
Air filter
Coils
coil boots and springs
engine oil and oil filter
basic first transmission pan fluid cand filter change
Checked coolant condition
When did you service:
Throttle body
MAP
IAT
Have you checked the condition of the tires and verified the correct COLD psi?
Have you changed where you get gas or different company then normal
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