Poor gas mileage

Tiny
ALEX HORN
  • MEMBER
  • 2012 MAZDA CX7
  • 2.5L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 95,000 MILES
I have been experiencing poor gas mileage after having the following service done on my car; throttle service, new spark plugs, fixed a valve leak, replaced AC relay. Does anyone know what could be causing this decline in MPG?

Thanks,

Alex
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Tuesday, July 24th, 2018 AT 11:34 AM

2 Replies

Tiny
ROL*S.
  • CERTIFIED MECHANIC
Hi Alex,

Right of the bat I will tell you that air conditioning use decreases mpg. It takes a little power from your engine and to make up for it, people tend to give it a bit more gas pedal. Want better mpg? Turn off that A/C. The transmission shifts okay? Goes into overdrive on the freeway normally? It does not make the engine rev too much? And what about that valve leak? What valve was that?
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Wednesday, July 25th, 2018 AT 7:32 PM
Tiny
ALEX HORN
  • MEMBER
Thanks for the quick reply. The transmission is shifting normally, I am going on a road trip tomorrow and will let you know how the car handles extended highway miles. I will also get back to you regarding the valve leak after speaking with my mechanic.

Regards, Alex
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Wednesday, July 25th, 2018 AT 8:12 PM

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