Gas/MPG's - What Can We Do?

Ilya

Member
As we know, the M (35 or 45) isn't exactly known for it's gas mileage.

Here are some things that you can do to help yourself achieve better gas milage:

*** Note: Some of these may be minimal, but added together as a whole it will help - at least it has on past cars I've owned ***

  • Clean all engine bay ground points
  • Clean throttle body (when you remove the rubber/plastic intake pieces and you get to the butterfly plate in the throttle body...clean that area. This did wonders on the VQ30DE in the Maxima that I owned previously.)
  • Run a fuel system cleaner every 10k or so (such as Gumout, Chevron Techron, Seafoam, etc.). Running them more often is usually a waste of money says Consumer Reports.
  • Change your PCV valve from time to time. I usually do it every 15k. It's not a terribly difficult job and I might make a HowTo thread on how to do it next time I do it. It's also a really cheap part.
  • Keep your oil clean
  • Keep your air filters clean
  • Keep your tires properly inflated (should be around 33psi on the M if I recall)
  • Make sure your spark plugs are in good health and properly spaced at .044mm I believe (example; if you have 80kmi on your car you should probably think about changing them)
  • Don't drive with a heavy foot

If anyone finds any discrepancies in my suggestions above or wants to add something, post in here. This might be a good resource for our members as gas gets more expensive by the month.
 
The best suggestion is to trade in the M and get a Prius.

If you insist on keeping the M and remain cheap with gas, use cruise control on the highway and set it to 65-70 mph. That should do wonders on MPG
 
Well, not only will some of these improve MPG, but it'll improve the overall reliability/performance of the car.

I can afford the gas no problem, but if I can spend $10 less a month on gas, why wouldn't I want to do that?
 
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