Going in for fuel efficiency issue

[portugal2oo6]

Hey guys my car is going in for fuel efficiency problems next week. its and 04 mazda3 sport automatic and it only does 300km on a tank of gas (city driving). what should i make sure they look at?

[Wild Weasel]

They're the pros, right? They shouldn't need guidance from us... :)

Things to check when efficiency goes out the window are anything that would throw it into open loop mode (such as O2 sensor) and tire pressure. But they should already know this.

[super_vixen]

My 04 GT has horrible gas mileage also....I'm lucky to get 350-400 off a tank of all highway or mixed city/highway driving...its only gotten worse in the past year or so. Mazda doesn't seem to think its abnormal though, so I've never done anything about it. I know people who pull 500+ off their cars and I just don't get it.

[MPS]

same here 04 GT 300k

[super_vixen]

same here 04 GT 300k

wow...300K on it already!?

Perhaps I just don't drive that much :) Mine has 55K

[MPS]

thats my old car 2004 sport GT

[S.F.W.]

I also have an '04 GT, 55k on mine. I usually get between 500-550km, and I drive pretty aggresively. The one thing, is I avoid using Sunocco gas. Because of the higher ethanol content, I get about 50k less per tank than I do from Petro, Esso, etc..

[3GFX]

You should get anywhere 400km+ per tank.

Things to check:
- O2 sensor
- Tire pressure
- Air Filter cleanliness
- Injector cleanliess (not so much check but clean)
- Regular oil change
- Thinner oil
- No excess weight in the trunk
- No junk in the trunk ;)

[BLKOUT]

Hey guys my car is going in for fuel efficiency problems next week. its and 04 mazda3 sport automatic and it only does 300km on a tank of gas (city driving). what should i make sure they look at?

What dealership are you taking it to? I get on average 350km per tank and that is apprx 80% city driving.

[portugal2oo6]

I took it to Dufferin Mazda. This is what has been done so far. I had to keep a record of how many KM i would get on a tank of gas for about a month. I kept record for almost 2 months and brought in all receipts. they then proceeded to check the car for any error codes. Thats all they did on that day which i think is not enough. So the service guy called me and told me " from what we did on the car we see nothing wrong with it" (just a reminder that on mazda's site this car should be doing 597km) now i know that those #'s are not realistic but i would only expect my car to do 15-20% less than that and not 50% like its doing right now. So moving on with what Dufferin mazda is doing, they have faxed over all information to Mazda of Canada and got a response saying that i should do a engine flush and replace the air filter. They said that i have to pay for this because its maintenance(which will run up about $200) i dont think i should be paying for this. He then said after doing this maintenance on the car that i would have to keep record of how many KM i get on the next 3 tanks of gas. Honestly i dont like the way this dealer is taking care of my issue they way they talk to customers is like we dont have a right to get our car checked ou. They kept telling me im getting normal milage on my car. But from what ive seen ppl on this forum are getting 450-550km per tank. I dont know where this will go i just want this problem fixed or i will have to get rid of this car and get a HONDA lol.

[majic]

portugal,

i would do the service (filter and flush) IFF (if and only if, for the non-math geeks ;) heh) they are going to refund it or comnpensate you somehow (say 4 free oil changes or whatever) in case you mileage does not increase..

i'd hate to see you do the maintenance and get 350km per tank and then they say .. "umm it went up didn't it" :S

anyway.. i'm on one of my best tanks now.. normally hit 1/4 tank at 400 and light comes on at 480.. but i'm over 420 and not at 1/4 yet.. good luck with that dealership..

[portugal2oo6]

actually my tank does abour 300-340 the MAX and thats running on fumes lol. So i hope they make it up if no change takes place..

[majic]

actually my tank does abour 300-340 the MAX and thats running on fumes lol. So i hope they make it up if no change takes place..

i'd get it in writing if possible!

[Mazda3_06]

i had the same problem and they replaced my gas pump
and i've been getting 500 + ever since

[BLKOUT]

i had the same problem and they replaced my gas pump
and i've been getting 500 + ever since

Which dealer did you go to?

[Mazda3_06]

westowne
they do all the work on my mazda
just tell them that you are getting bad mileage on your car and you think that the fuel pump should be replaced and they would probably do it

[McGuyver_3]

its probably the way the computer recognizes it. What i mean by this is that the longer you have your car you computer adapts to how you drive. this either worsens or makes things better. Try what they call a battery reset disconect the battery for 15-20 minutes(if you are in no rush try 1 hour) This will reset your cars computer. The computer then addapts again to how you drive and this should help. Doesnt always work but it has worked for me.

[Coaster]

I also have an '04 GT, 55k on mine. I usually get between 500-550km, and I drive pretty aggresively. The one thing, is I avoid using Sunocco gas. Because of the higher ethanol content, I get about 50k less per tank than I do from Petro, Esso, etc..

I've noticed the same thing with Sunoco.
Check out the Ontario Gov't website below & notice that now all gasoline could have ethanol in it. They don't have to tell us which grade of gas contains ethanol or which station is selling it. They only have to prove that at the end of the year they've met the 5% average for the year.

http://www.ene.gov.on.ca/envision/ethanol/index.htm

[S.F.W.]

ya, I was aware of the new ethanol requirement. Sunoco is still higher than most. Most gas stations have a label on the pump to tell you the ethanol content.

[Kevin@nextmod]

Before i had my tranny replaced, i get about 320km a tank and now after the tranny replacement i'm getting close to 400km a tank. But maybe cause i have intake, no cat and exhaust.
But i do 90+% city driving.
BTW, i drive an 06 GT

[Flagrum_3]

Before i had my tranny replaced, i get about 320km a tank and now after the tranny replacement i'm getting close to 400km a tank. But maybe cause i have intake, no cat and exhaust.
But i do 90+% city driving.
BTW, i drive an 06 GT

That could have resulted from the fact that the battery would have been disconnected during the Re&Re for some time, therefore resetting your computer as 'my mazda 3' mentioned above.I've stated before many times on this board...if anyone is experiencing extremely bad gas miliage try disconnecting the battery and draining capacitors in the system.Mind you I'm not saying it will work but its a simple method of eliminating items that could cause the problem.


+3


.

[BLKOUT]

Hey portugal2oo6, have you had this issue fixed?

[xg3]

2005 2.0L
I can do 500km with a full tank of gas... with last block left.

I work everyday, so i drive the same distance, 60% highway 40% city.
Octane 87 = 440km, lasts me mon - thurs
Octane 94 = 500km, lasts me mon - fri...

been steady for 2-3 months now

[Wild Weasel]

I don't believe you actually get more mileage out of the higher octane gas. Higher octane does not increase fuel efficiency.

How do you moniter this? Just by general impression or do you actually calculate the consumption based on mileage and fuel purchases?

[BLKOUT]

My current tank I have 140km and it is 1/16 above half. I have been doing all city driving with this tank, but it should not be this bad!

[Wild Weasel]

My last tank was pretty bad as well. This weather will kill your mileage, especially if you mostly make short trips so the oil doesn't have the chance to fully warm up.

[EvilEric]

I keep on trying to coast more just to get more mileage of it but unless i've got some long HWY driving it always comes in at around 400 per tank

[Wild Weasel]

I hope you're not talking about coasting in neutral.

[EvilEric]

No, just trying to be light on the gas and break. There are too many stop lights on the way to work.

[Wild Weasel]

Remember... engine braking = ∞ mpg. :)

[xg3]

Yah i don't believe it either.. I reset the trip everytime i fill up..
I always fill up on a sunday before work and i only drive to work from monday to friday. Exactly the same distance, no detour what so ever.

[EvilEric]

Well how much time do you sit around idling? Like waiting for people or waiting for the car to warm up.

[Wild Weasel]

Yeah, that's just not an accurate measure.

Hell, psychologically you might just go easier on the throttle after putting the expensive gas in it. :D

You should keep recordings of your mileage and how much gas you put in at each fillup. Then you can properly calculate the mileage.

Then you'll see that you're wasting your money on the high octane gas. :) There's no reason or benefit to putting it in your car.

[xg3]

Yah definitely u can say that.

I warm my car 5mins, once before work and once after work.
I do not pick anyone up. Come on, none of you guys have a regular working week? Where you just go to work, and come home?

Hey, don't believe me. I never asked anyone to.

[majic]

2005 2.0L
I can do 500km with a full tank of gas... with last block left.

I work everyday, so i drive the same distance, 60% highway 40% city.
Octane 87 = 440km, lasts me mon - thurs
Octane 94 = 500km, lasts me mon - fri...

been steady for 2-3 months now

lets see some proof (spreadsheet or receipts) ;)

[majic]

This weather will kill your mileage, especially if you mostly make short trips so the oil doesn't have the chance to fully warm up.

actually, for me, (90% of the time trips are 50km+) the weather has NO impact on fuel economy.. i'll try to take a screen shot of the spreadsheet i use..

[majic]

Yah definitely u can say that.

I warm my car 5mins, once before work and once after work.
I do not pick anyone up. Come on, none of you guys have a regular working week? Where you just go to work, and come home?

Hey, don't believe me. I never asked anyone to.

5mins!??!?! damn.. wasting gas RIGHT there..

you mean you don't have any hobbies or grocery shopping to do, EVER?



Octane 87 = 440km, lasts me mon - thurs
Octane 94 = 500km, lasts me mon - fri...


lets assume that the above numbers are right and that you fill 42L (about how much i fill when the light comes on)


km L $/L fillup $/km $/1000km
440 42 0.84 $35.28 0.0802 80.18
500 42 0.96 $40.32 0.0806 80.64

84c/L is the average price of gas i paid over the 2+ years owning the car.. premium is about 10c more and the 94 octane EVEN more so i added 12c

IF you are getting better mileage out of the 94 octane, which i doubt, you're saving 50c every 1000km or $15/yr and 8 extra trips to the gas station ;)

[Wild Weasel]

Yah definitely u can say that.

I warm my car 5mins, once before work and once after work.
I do not pick anyone up. Come on, none of you guys have a regular working week? Where you just go to work, and come home?

Hey, don't believe me. I never asked anyone to.

The reason I argue it isn't to make you look dumb or anything. I bring it up because what you're posting is encouraging others to use high octane gas. I want to make it very clear that your numbers make no logical sense. You can do a search to find where we discuss all the technical issues for why this is so, but the bottom line is that higher octane gas will not give you better mileage so if you think it does, there is likely some other underlying reason for it.

I also drive to work every day, 70 km's in total, and I know full well that conditions from day to day can be drastically different. 1 day I'll be home in 45 mins and the next it will take an hour and a half, regardless of whether I'm using 91 octane or 93.

[Wild Weasel]

actually, for me, (90% of the time trips are 50km+) the weather has NO impact on fuel economy.. i'll try to take a screen shot of the spreadsheet i use..

Yeah, once you're in closed loop mode, all should be well. That's why I mentioned that it will have the biggest effect on those taking many short trips. They're spending much more time in open loop mode, churning thicker oil, and thus using more gas.

I have to check my numbers but I'm betting I've gone from 10.x L/100km average down to 11.x L/100km's over the past few weeks.

[EvilEric]

Yeah, once you're in closed loop mode, all should be well. That's why I mentioned that it will have the biggest effect on those taking many short trips. They're spending much more time in open loop mode, churning thicker oil, and thus using more gas.

I have to check my numbers but I'm betting I've gone from 10.x L/100km average down to 11.x L/100km's over the past few weeks.

I haven't gotten as high as 11.x L/100 at the end of each tank but it's pretty darn close for me. I keep trying to break back down to the factory specificed 9.4 for local driving.

[majic]

Wild Weasel has a sunflower ;) so his #s aren't indicative of what YOU should be getting ;)

[Wild Weasel]

Wild Weasel has a sunflower ;) so his #s aren't indicative of what YOU should be getting ;)

heh. Werd.

[portugal2oo6]

its not fixed yet ..they clean the injecters and put in a new air filter...its doing less on a tank now i think. its almost at empty ( light didnt come on yet) but its only at 270km and for sure the light will come on today when i go to the gym ...which will bring it up to 275km lol...Dufferin mazda is looking at this. What do you guys think i should do now? they made me waist that money on that service ( money i needed for other things) and now its not doing any better, worse i think.

[3GFX]

This may seem elementry but maybe you have faulty tank. How many litres of gas is going into the tank? I believe it should hold 55 litres.

[oasis100]

I avg usually around 9.8/100

[portugal2oo6]

i usually put gas in when the light goes on and its always around 47 liters

[portugal2oo6]

i usually put gas in when the light goes on. When i fill up the tank its usually 47 liters

[Mazda3_06]

see if you need to get your gas pump changed.. i had the same problem when i first got my car and i was only doing 300 kms to a tank. the very first thing they did was change my gas pump

[portugal2oo6]

and after they replaced the fuel pump did it fix the problem? How many Km did you get to the tank?

[PhantomPurple_07]

how hard are you guys driving your car? if i'm just doing pure city driving, b/t home, work, gym and what not i get about 450-500 and with hwy driving the best i got was almost 630, but that was a drive out to sarnia and back. that was my best tank so far.

[portugal2oo6]

i dont drive it hard at all. ( the od time ill push it a little more but nothing crazy)so this is really bothering me.

[sunset_orange]

i dont drive it hard at all. ( the od time ill push it a little more but nothing crazy)so this is really bothering me.

Hey portugal2006, I have experienced very bad fuel economy on my Mazda3 2004 GX sedan as well (around 48K now), I am only getting max. 400KM per tank before the light comes up. I don't know if the weather/snow tires have anything to do with it, but during the summer I usually gets about 480KM-500KM before light comes on.

This fuel efficiency is sooooo horrible compare to my 04 Civic, which is getting 500KM+ consistently on a full tank, even in winter time.... which really makes me want to get another civic next time...... =(

[sunset_orange]

see if you need to get your gas pump changed.. i had the same problem when i first got my car and i was only doing 300 kms to a tank. the very first thing they did was change my gas pump

is this covered as a warranty part? where exactly is the fuel pump?

[wtom]

You guys/gals checking your tire pressure at all four corners? Should be 32 to 34 PSI ... otherwise that will affect your fuel consumption SLIGHTLY.

[MZ3_GS]

Wow the 2.3 is horrible on gas. I have the 2.0 and its consistently over 600KM. Best was 6.6L/100KM

[Mazda3_06]

the fuel pump is under warranty
after i got it replaced i was doing about 500 - 600 kms to a tank

[sunset_orange]

Wow the 2.3 is horrible on gas. I have the 2.0 and its consistently over 600KM. Best was 6.6L/100KM

600?! OMG.... i hate my car... ;(

[EvilEric]

600?! that's nuts. Are you driving long distances all the time? i've got a 2.0 and never gotten near that level of efficency.

[Hazy]

The gas light turned on @ 318KM. I've been only getting around 300KM during the winter.

[3GFX]

:o

You should at least be getting 400km a tank, wow.

[wtom]

I'm curious those of you with the really bad mileage, what's the build date of your car?

[Hazy]

I pretty sure its Feb. 05. I will double check.

[b]

I bought my car in 2003. I will look tomorrow.

Wondering if I have the oldest mazda 3 on the forum? :( Maybe that would explain all the problems I've had lol.

[sunset_orange]

I'm curious those of you with the really bad mileage, what's the build date of your car?

I believe my is Apr. 04

[EvilEric]

If you scroll up, i think someone suggested air filter change. That would make sense since Older cars have been running longer?

[portugal2oo6]

i already replaced the air filter. but thanks

[PierreB]

I was able to do 650-680KM with my old GS 06 2.0L model with the 2.3L in winter I do around 500-525km city/highway and in the summer I do around 580-610km before the lights goes on. the highest amout of gas I took was 49L with a light on.

[Hazy]

That's really good. The most I ever did was 440KM before the light turned on which was during the summer.

[MZ3_GS]

600?! that's nuts. Are you driving long distances all the time? i've got a 2.0 and never gotten near that level of efficency.

Mostly Hi way I say 80%. Also it is 5 speed and only has 15" Rims.
Drove it down to the States once, and since the limit is 55 down there I was doing 700KM a tank.

[Skarbro]

Every tank I reset the fuel tracker and I am consistently getting about 9.8L/100km - so that's about 561 km's if I ran the tank dry.

[wtom]

What brand and octane of fuel are you guys with the piss-poor mileage using?

[PhantomPurple_07]

with this cold weather i've seen my mileage drop but not a whole lot, at a quarter take i've got around 360 km. but that might have to do with the fact that traffic to work in the morning has been mental this week b/c of the snow, so its taking longer to get here.

[faibs]

i get 400 and like 90 percent city driving on my 06 GT 5spd. but i also have a remote car starter which KILLS it, i am avg. 11.4L/100km (displayed on the dash, havent reset)

[BLKOUT]

I am back to getting 350-375km when the light comes on.

[MrJWU]

I've got an '05 2.3L Sedan, ATX and I get approx 375-400 before the light comes on... about 80% City....

I'm in the same boat as all of you.... Glad to hear i'm not the only one!

[Wild Weasel]

I got 8.something for my last tank. Woot! :)

[06Touring3]

I avg roughly 480Km's per tank...In the winter it shot down to about 400 - 450

The best milage I ever got out of my 3 was 787Km's (all hwy) on a trip to the states...LOVED it :)

[carsenault]

I've had my '05 GT (2.3l, AT) now for 5 days and we'd put on about 160kms. The dealer filled the tank before we picked it up. So after 160kms we are at 1notch over the half tank mark. I dont know if that is normal for my car as I dont know exactly how much gas was put in plus still getting used to the light and fun to press accelerator pedal. :chuckle

The car has been sitting on the lot since last summer, im sure that cant be good for cars computer. Also, I wonder how old the gas that was in the car before the fillup was. Ill use up as much of the reserve as possible before refilling and disconnecting the battery to reset the comp. Ifthat dont do much Ill call up the Mazda dealer here in town.

[vlad5434]

If you wanna save gas dont us ur fogs and lights as much, ac, dont open ur windows if u do it slows ur car down and as u speed up u lose more gas dont rev your engine when ur in park and all that. But i thin i get 500 km not to sure

[laksman91]

This is weird, but my AWD Turbo Lancer Ralliart is getting similar fuel efficiency as my Mazda3 05 2.3GT did.

[jaybird]

I've had my '05 GT (2.3l, AT) now for 5 days and we'd put on about 160kms. The dealer filled the tank before we picked it up. So after 160kms we are at 1notch over the half tank mark. I dont know if that is normal for my car as I dont know exactly how much gas was put in plus still getting used to the light and fun to press accelerator pedal. :chuckle
The car has been sitting on the lot since last summer, im sure that cant be good for cars computer. Also, I wonder how old the gas that was in the car before the fillup was. Ill use up as much of the reserve as possible before refilling and disconnecting the battery to reset the comp. Ifthat dont do much Ill call up the Mazda dealer here in town.


If you wanna save gas dont us ur fogs and lights as much, ac, dont open ur windows if u do it slows ur car down and as u speed up u lose more gas dont rev your engine when ur in park and all that. But i thin i get 500 km not to sure


This is weird, but my AWD Turbo Lancer Ralliart is getting similar fuel efficiency as my Mazda3 05 2.3GT did.

Just an FYI, this thread is almost 2 years old :)

[carsenault]

Just an FYI, this thread is almost 2 years old :)

Sorry, Im a new member that finds that info very useful.

[carsenault]

Here's an update. Filled the tank again Friday evening after driving aprox 20 kms with low fuel warning light on. 46 litres filled the tank. Stll getting similar mileage.

Waiting for the service adviser from Atlantic Mazda to get back to me.

[zeron]

Sorry to hi jack this thread but what does O2 sensor has to do with fuel economy? And what is consider ok? I am also experiencing poor fuel economy on my 2 months old 2009 gx sports.

[carsenault]

Ok, my second tank was pretty much the same as the first. I filled it after 308kms, needle was a couple of notches below 1/4 tank.

[gta_driver]

O2 sensor tells your engine how to mix fuel and air. Basically, it either dumps more or less fuel depending on the readings of the O2 sensor. If your O2 sensor is faulty, it can result in significantly worse fuel mileage. I once had a 4-cylinder car with bad O2 sensor that smoked out the back pipe and got about 27 L / 100 kms.

Anyway, usually if your O2 sensor is bad, you'll have a Check Engine Light.

There are many, many factors that affect your fuel mileage. There are some outliers here with 500+ km per tank pure city driving, but by no means is that representative of your average driving style and habits. It's one thing to drive in the city in Scarborough, and another thing in downtown Toronto. Traffic conditions just vary so greatly.

Another factor is tires. On winter tires the rubber is much softer, resulting in higher fuel consumption. Summer tires (the cheap ones anyway, and the ones that last a loooooong time) have harder compound, which means less rolling resistance and again, better mileage.

Weather plays a factor. Cold weather means more fuel consumption. Slippery road conditions mean more fuel consumption.

No matter how you look at it, a car with a 2.3L engine that weights 2900 lbs will NOT get the same fuel mileage as a 1.6L civic that weighs 2500 lbs.

I think the GT does well on the highway, it should take no more than 8 L / 100 km if driven 90 - 110 km/h. Drive it 120 km/h or more, and the fuel mileage suffers.

City driving differs. If you get less than 11, that's good. That's actually what US gov't rates our Mazda at (check out http://www.fueleconomy.gov and make sure to change the units to L/100 kms on the right).

I was getting 13 to 14 L/100 kms in the winter, purely downtown driving and lots of short trips. Mazda's open loop mapping sucks a$$ big time.

Right now, with summer tires and better weather, longer trips, I averaged 10.5 L / 100 kms.

So, at the end of the day, don't believe that our cars shoudl be getting 500 kms per tank in city driving, that just can't work. I find that my fuel consumption is generally 20 % higher than rated in Canada.

By the way, Canadian highway rating is rated at speed of 80 km/h. Which no one is driving by the way.

[slam525i]

Sorry to hi jack this thread but what does O2 sensor has to do with fuel economy? And what is consider ok? I am also experiencing poor fuel economy on my 2 months old 2009 gx sports.

Your 2 month old car probably won't reach peak fuel economy until you've broken it in some more. But even taking that into account, the difference is small. The best thing to do is adjust your driving style. I doubt there's an O2 sensor problem on a new car.

[DreamM3]

Got 634 km on my last tank. Filled up 48 L. Thats roughly 7.7 l/100k. 50/50 hishway/city

[carsenault]

Got 634 km on my last tank. Filled up 48 L. Thats roughly 7.7 l/100k. 50/50 hishway/city

Wow... nice.

That's it, Im calling Mazda. I can barely make it to 400km

[carsenault]

I finally heard back from Mazda, they say they wont cover the fuel pump under the bumper to bumper warranty, Im only at 75k kms but the car is 4 almost 4 years old. Since Shell has been adding nitrogen to thier gas, my mileage has improved a bit, getting close to 400km per (approx 45l) fill now.

Interestingly though, they want me to book an appointment for a couple of recalls. So much for the used dealer's comprehensive inspection. :flaming

[-cj-]

Keep in mind when people tell you they get 5-6XX km out of a tank that they might be on a 2.0 liter vs your 2.3...

[victor_t]

the fuel consumption of a car is highly dependant on the driver and the traffic, so comparing fuel consumption between different drivers and or different cities is meaningless.

on highways my 2.0L mazda3 gets anywhere from 5 to 7 L/100.
today I was coming home in stop and go traffic on the highway and the average for that was 11 L/100 and at the worst time it was 14 L/100.

over many tanks I've gotten anything between 8.2 L/100 to 9.5 L/100 averages, depending on the conditions and how I drove.

[dadinho_nfg]

how do u see the xx/100 l numbers from ur car?
i have a mazda 3 gt 2006 and im not getting great milage, about 400 kms a tank and would like to know those readings a little better

[Chester_Lampwick]

how do u see the xx/100 l numbers from ur car?
i have a mazda 3 gt 2006 and im not getting great milage, about 400 kms a tank and would like to know those readings a little better

Some of the higher end models like the GT have this info on the dash display. Most people just measure by recording the odometer and how much gas they pumped at each fill-up. Then use the old calculator.

For instance

I filled my car with 1616kms on the odometer (disregard the amount of fuel)
Then I drove until needing a refill, 2075kms I put 38.367 litres in to refill. So:

2075 - 1616 = 459kms driven

38.367 / 459 * 100 = 8.3l/100km

You probably should average 3 fill-ups to eliminate the chance that the pump may have short filled or whatever. You might get one one fill-up that seems like you get 12l/100(terrible), and one that indicates 6l/100km(fantastic), and another that has 8l/100(average), but when averaged out you get 8.7l/100km which is basically the EPA rating.

Hope this helps:)

[dadinho_nfg]

i just found out i have a 06 with the info button so i can see wat the car get!!! the only thing that concerns me is that im avging 14l/100 and in curr fuel consumption i get readings from 3l/100 to 50l/100 and thats driving normally, not shifting past 3500rpm////
ive never done more then 450km on teh tank, i do 100% city driving, should i be getting more or should i take teh car in bc it may have a problem?

[Chester_Lampwick]

i just found out i have a 06 with the info button so i can see wat the car get!!! the only thing that concerns me is that im avging 14l/100 and in curr fuel consumption i get readings from 3l/100 to 50l/100 and thats driving normally, not shifting past 3500rpm////
ive never done more then 450km on teh tank, i do 100% city driving, should i be getting more or should i take teh car in bc it may have a problem?


Depends. 450km and what do you normally put in? I fill at over 1/4 so the pump usually clicks off with 35 litres. As you can see, that is about 450kms for me, and that's what I'd expect for mixed driving 8.3l/100kms.

I don't trust this 14l/100 the display is showing you. Try to reset this display. Also just start saving your gas receipts and write the odometer readings on before you drive away from the pump. Then chart into excel.

[dadinho_nfg]

i filled up yesterday, the light had come on and i must have driven 20 kms on the light and it only allowed me to put 42.13 L kind of werid, where my dad has a p5 and he fills up as soon as the light goes on and he puts 47 L no problem!!!!

[rick10]

the average for a mazda is 10l/100 km so if you are doing between that its completely normal...

Unless you are doing pure city driving in rush hour i dont see how you are getting 300 a tank...

I also have the 2.3 gt and in the winter i average around 400-450 .. summer time gets a little better between 500-550...

Long trips i average around 600-650

Also keep in mind a lot of there people here are giving you their mileage after the fuel light comes on (so god knows how much they drove with their light on)...

[dadinho_nfg]

i reset my info button....
i went on the highway and was avg low 8
now im working in the city and my avg is going up to 9.4 is that normal? im about 1/4 of the tank in and ive done 115km ....???
normal??/

[Chester_Lampwick]

Sounds pretty normal. I'm sure if you have the info screen, you likely have a GT which are thirstier than the base models. I can't comment on your driving style or habits, but this is in the range of normal.

Keep hand calculations too.

[dadinho_nfg]

yea i have an 06 gt....
and for me to avg these numbers, ive been driving like a grandma which is kind of sad.....
thats waht concerns me....
i can drive crazy in my dads p5 and do over 500 km

[Chester_Lampwick]

Gimme some real numbers. If your dads P5 had a bigger tank and smaller engine and the gas gauge was calibrated differently then you impression might be inaccurate.

Roughly from your previous posts
Dad's P5 47l 500kms = 9.4l/100km
Your M3 GT 42l 450kms = 9.3l/100km

So, is your car so bad? Was your dad's car so great? I don't know, but they seem in the same ballpark.