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 Posted: Mon Sep 12, 2011 4:42 am |
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Joined: Sep 03, 2011
Posts: 5
Trade Rating: 0
Location: stoke on trent
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Hi all, new to the forum and have a problem with fuel economy. I bought the car last week, it is a 2003 1.1. I use the car on 13 mile trips to work, half dual carriageway and half normal roads. Putting a tenner in I'm getting approx 30 to the gallon. Air filter was dirty so changed it, any ideas,
Thanks, Steve
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Posted: Mon Sep 12, 2011 4:44 am |
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Joined: Feb 24, 2010
Posts: 2596
Trade Rating: +17
Location: North West Wales
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You have a heavy right foot.... simples 
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Posted: Mon Sep 12, 2011 4:46 am |
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Joined: Feb 07, 2010
Posts: 5348
Trade Rating: +33
Location: Kings Lynn
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Just try giving it a full service and running it on high octane premium fuel for a month and see if it improves 
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| spike_202 wrote: |
| My Powerflow is quite loud but then again it's on ITBs and has a decat. |
Audi Sport | |
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Posted: Mon Sep 12, 2011 5:59 am |
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Joined: Feb 07, 2010
Posts: 235
Trade Rating: +1
Location: Glenrothes
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I got about 30mpg in my first 1.1 i had. I red lined every single road though... warm or cold  not 1 engine problem to be had in over 70k either, solid we guy so he was
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| 2.0hdi sport + DAC 2005, aegean blue!  | |
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Posted: Mon Sep 12, 2011 6:09 am |
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Joined: Feb 11, 2010
Posts: 3075
Trade Rating: +8
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My mrs only gets that and she has a very well maintained car. Shes not a mad driver either. Its mostly town driving.
So I would say thats about right really.
Just get a bigger engine  My 1.6 can do 520 miles on a tank, pure motorway driving 
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Posted: Mon Sep 12, 2011 6:16 am |
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Joined: Feb 07, 2010
Posts: 4455
Trade Rating: +1
Location: Essex
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Drive like a tree hugging coffin dodger & it might improve.
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Posted: Mon Sep 12, 2011 6:20 am |
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Joined: Feb 24, 2010
Posts: 2596
Trade Rating: +17
Location: North West Wales
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| E5GDM wrote: |
| Drive like a tree hugging coffin dodger & it might improve. |
Warning may result in death due to serious boredom .
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Posted: Mon Sep 12, 2011 7:43 am |
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Joined: Nov 27, 2010
Posts: 11520
Trade Rating: +10
Location: What's it to you? ? ?
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| steve-1965 wrote: |
Hi all, new to the forum and have a problem with fuel economy. I bought the car last week, it is a 2003 1.1. I use the car on 13 mile trips to work, half dual carriageway and half normal roads. Putting a tenner in I'm getting approx 30 to the gallon. Air filter was dirty so changed it, any ideas,
Thanks, Steve |
there's nothing wrong with it, 1.1 is gutless & its trying to lug nearly a ton of 206 along.
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Posted: Tue Sep 13, 2011 1:31 am |
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Joined: Aug 01, 2011
Posts: 390
Trade Rating: 0
Location: Bath UK
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With a 1.1 engine it should be easy to obtain 40mpg average and 50mpg or more on a long run
click here for figures of over 1000 1.1 owners<<<
Once you have checked the normal service items, (especially now you cleaned the air filter) then it's best to reset the ECU so it relearns quicker the best set up for the current state. It'll get there in the end but it's a good idea to tell it to "take a fresh look" whenever you change any major engine part that affects economy. That will reset your LTFT (long term fuel trim) and it will find the new best settings
LAMBDA
After that, the most significant effects on fuel economy (besides your right foot) are the lambda sensor - which will fine tune back the fuel used when at steady rpm -so that has a huge effect on economy
MAP
and your MAP sensor which tells the ECU how much air is going in so it adjusts fuel accordingly.
Either one of those giving misinformation and the mpg plummets
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Posted: Tue Sep 13, 2011 4:50 am |
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Joined: Sep 03, 2011
Posts: 5
Trade Rating: 0
Location: stoke on trent
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Thanks for the replies, after looking at the mpg figures, mine seems quite low, how do I reset the ecu? Is it just a matter of disconnecting the battery?
Thanks
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Posted: Tue Sep 13, 2011 5:01 am |
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Joined: Feb 07, 2010
Posts: 7209
Trade Rating: +14
Location: Stevenage
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I would say your getting about the right sort of MPG with the driving your doing to be honest. Your only doing short journeys so the engine will only just be getting up to temp when you come to your work place and the same on the way home.
The MPG figure shown are done under lab conditions and dont really reflect on the true world.
When was the last time you gave it a good service? Give it a good service and see if that improves things.
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Posted: Tue Sep 13, 2011 5:15 am |
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Joined: Aug 01, 2011
Posts: 390
Trade Rating: 0
Location: Bath UK
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| Mikey2uk wrote: |
The MPG figure shown are done under lab conditions and dont really reflect on the true world |
No, those are real owners figures and it's an average consumption ie for varied driving conditions. The manufacturer's figures seem to be done downhill with a wind behind you
how do I reset the ecu? Is it just a matter of disconnecting the battery?
Yes that'll do it if you disconnect for an hour or so
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Posted: Tue Sep 13, 2011 6:46 am |
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Joined: Feb 07, 2010
Posts: 3948
Trade Rating: +7
Location: A Track near you ;)
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Obv this guy knows more than us 
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| Renault Clio III RS - Race Car
Renault Trafic - Daily & Tow Van
Former Poverty 206 XS 1.6Turbo Owner | |
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Posted: Tue Sep 13, 2011 8:04 am |
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Joined: Nov 27, 2010
Posts: 11520
Trade Rating: +10
Location: What's it to you? ? ?
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| Mattie-RS wrote: |
| Obv this guy knows more than us |
Exactly
TU1 lump pulling nearly a ton of weight along, you aint gonna get good mpg figures from it unless driven like a eco hippy
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