Changed plugs, added sheilded short ram intake (with k+n cone), and cleaned out the throttle body. Still seem to only be getting 17mpg average. 2004 Mazda 3 hatchback 2.3 5 speed.
I get 12 on-track, 22-24 in city (stopping every quarter to half mile), and over 35 on the highway.
Something is not right with your car.
What spark plugs are you using?
And yes, what are your tires inflated to along with when was the last time you got an alignment?
Brand new Perellis. Fresh alignment (according to the guy I bought it from). Made a slight miscalculation. Turns out my average for 1 tank of premium was 20-21mpg. Not 17. I do feel it should be much higher though compared to all of you. Only thing I can think of is that sometimes I eat lunch in my car with it idle.
I get about 27, for a combination like John^
Mostly stop and go and when traffic allows, 80, with a coupe of...ummm...fun passes here and there. When I start having too much fun it goes to 25.
That flywheel must really help you XCNuse. I assuming the less weight the engine has to spin, the better.
OP unless you are tuned for 93, it will only lower the number of dollars in your wallet and maybe even your car's mpg. I've had the best mileage with chevron and bp.
you may have just convinced me to go a lot slower on highway...
i knew the difference was big, but wow that is huge. i still figure a lighter flywheel can only help though.
Fuelly is amazing, highly recommended to everyone. My average is lower than 27.8 in reality, because I once supposedly got 44 mpg according to Fuelly, which is impossible. The pump didn't fill my tank all the way, so the app thought I used less fuel than I actually used.
I average around 24 mpg, with mostly city driving. I hit 33 mpg driving from Seattle to Columbus doing 85 mph.
I went to Colorado for Thanksgiving. It was about 900 miles each way and I averaged 36 mpg for the highway driving. On the trip up I was doing 75 most of the way but on the way back it was 60-65. Definitely saw a difference between 60 and 75 mph.
All is well now after oil change, motor mounts, and manual trans fluid change. 2 fill ups at about $35 each (13-14 gals) for regular octane. Both tanks gave up 320-330 miles before light came on. May still be low at only 23-24 mpg, but much better than before.
I'm getting about 21mpg, all city stop and go traffic. Glad to know that I'm getting pretty average mileage. I was really concerned because there was a pretty noticeable difference between my 05' 3 2.3L compared to my old 03' Protege5.
I have a 2004 Mazda3 2.3 5-speed and I average about 25 mpg between fill ups, with 80% suburban, 10% urban, 10% freeway.
That being said, I recently did a 600+ mile road trip from Michigan to Minnesota and only averaged 28 mpg. Pretty disappointing, though the air temp was low, the car was packed with 3 passengers and gear, and I was not necessarily driving in "eco-mode."
I wonder if there is Carbon build up issues with the gen 1 NA 2.3 l motors. I know they are fuel injected but not direct injection. So I don't know what that means for carbon buildup.
No, not on the valves at least. That's an effect of DI.
Carbon buildup is still something that can occur in all engines, but you don't really see it on port injection motors on the valves as fuel is always flushing through.
I'm getting average 29/31 60/40 city/hwy. Mostly in warmer weather.
Still running 5w20 oil in the engine and most highway driving is at 60mph or under. Lots of coasting up to stop signs and lights. I usually get 360/380 miles out of a filled tank.
I did recently change the plugs, coolant, T-stat, and oil. Running stock air intake.
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