Jump to content
Do Not Sell My Personal Information


Fuel Consumption


djbenny1
 Share

Recommended Posts

Hey guys

I have an 04 f/l 1.6 Corolla t3, I've had it almost a month now but I'm disappointed with the fuel consumption.

The trip computer says I am getting 31.3 mpg but my own calculations (using red light to red light mileage and litres of fuel put in) say I'm getting 32.5 MPG, pretty shocking IMO I was expecting at least 38.

I do have large wheels which you might say disrupt the counters but I have worked it out and the overall wheel/tyre circumferences are only 1% different so I'm ruling that out.

So basically what could be causing my low MPG?? I don't think it's my driving by the way, I have put my foot down the odd time but 90% of time is just normal driving.

Thanks

Link to comment
Share on other sites


Seems pretty low to me. I get better than that from my T Sport (and I don't turn my air con off either).

Could possibly be an oxygen sensor problem. Have you got any lambda readings from a recent MOT or anything? If the sensor is buggered it can lead to the car over-fuelling.

Are your tyre pressures OK?

Brakes seizing on?

Link to comment
Share on other sites

It just had MOT in July passed no problem. Yea that's what I was thinking it's around T Sport MPG...

What about oil and stuff would oil needing changed affect efficiency?? Car is at 62k but every service EXCEPT the most recent one (60k) was done by toyota. The 60k was done by an independant.

Any other ideas guys? I'm starting to worry incase something major is wrong because I REALLY can't afford to fix it :(

edit. What tyre pressures should I have?? Like I said I'm on 18s with 215x35 profile tyres

Link to comment
Share on other sites

Im also having sort of the same problem with mine, as the MPG i get is similar to OP's, im thinking of using some fuel additive next time i fill up, to see if that helps, because it did on my previous cars. If that doesnt work, will also try some of the suggestions mentioned above

Link to comment
Share on other sites

It could be your driving! :) not being funny, but when you get a new car it takes you a while to know how to drive it for both performance and economy.

Failing that, try cleaning the maf and do an ecu reset by disconnecting the battery for a while. It wouldnt hurt

oh i know, in my Yaris TS it took a couple of months for my MPG to stay constant on the computer, but it didnt change by much

and i know myself that I am driving the car pretty easy - IMO at the very worst i should be getting 36-37 MPG allowing for my driving

does cleaning the MAF help??

Battery was detached a couple of weeks ago but i didnt touch the MAF, you think its worth cleaning?

any other ideas??

Link to comment
Share on other sites

does cleaning the MAF help??

Should do if it needs cleaning. I'm sure I read somewhere on a forum they got better mpg once done. quickly googled 'clean maf mpg' to make sure I wasnt going mad and its full of success stories with various makes of car.

Bit of carb cleaner from Halfords, quick spray and see what happens. Might as well, doesnt take 5mins ;)

Link to comment
Share on other sites

cheers ill give it a go ;)

checked my pressures btw; the back left tyre was 10 under the rest, so i put it up so they were all even.

just going by what it said on the tyre though, max pressure was 50 PSI theyre all around 45 now, with slightly more in the front.

Link to comment
Share on other sites

@Jase88: It must be a test of will power :lol:

High tire pressures are okay as long as it's not excessive; I'm running 40f/35b atm on my Yaris.

50's probably too high; That's approaching bicycle type pressure! :o

As I said on another thread, higher pressures is the poor man's low-friction tyre! :lol:

Link to comment
Share on other sites

hey guys

update

i cleaned the MAF well, no effect, still at 31-32 MPG and after 60MPH efficiency drops pretty badly, it seems to be really drinking petrol at 80..

although i have to say, when i took the MAF out, there was the little glass bulb thing, and also there was a wire up in another little section, i couldnt reach the wire so i gave it a good spray and i cleaned the bulb as best i could using the spray and cotton buds until no dirt came off (not much came off in first place)

but the little bulb thing was a strange brown colour, almost like a coloured bulb would be - is this normal? as i automatically assumed it would be clear? the brown coating didnt seem to be dirt as like i said i couldnt remove it.

i also lowered the tyre pressures again - 37.5 front and 35 rear; rides a lot smoother but no effect on MPG.

what else could be wrong?? brakes seem fine.... how much is a new MAF sensor?

I'm in 2 minds now - keep the car / try and fix it - or sell it and cut my losses.

i really love the look of the car more than anything, and it drives great but its costing me an absolute fortune right now... i filled it up (£50) on monday and it will probably be on red light again at weekend if not before...

is 40MPG realistic?? i put my foot down occasionally and am around town / motorways regularly too. quoted figure is 40.4 IIRC

thanks

Link to comment
Share on other sites

if im honest i do drive the Corolla "enthusiastically" lol, but if i drove like a granny i would still probably only manage about 35-36.

i dont get how people get 34 out of their t sports tho, they driving like grannies? :s

Link to comment
Share on other sites

Downside to me is my Journey of a morning and end of work day is about miles. So not enougb proper time for the engine to do what it needs to.

Still.. I do get to Dabble in Lift ;)

more like what you want it to do maybe?? :P :lol:

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share




×
×
  • Create New...




Forums


News


Membership