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 Posted: Sun Jan 09, 2011 2:20 pm |
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Joined: Jan 09, 2011
Posts: 4
Trade Rating: 0
Location: Portsmouth UK
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Hi,
We are getting a lousy 32mpg from my wifes V reg 1.4 petrol. She's no racer, and I am wondering what can be done.
So far I've gapped & changed the plugs, added some "injector cleaner", adjusted the tappets (they were a little noisy) and recently pumped the tyres up a bit more (still awaiting the mpg figures from that change).
Any ideas would be most welcome, oh and thank you for reading my 1st post ! 
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Posted: Sun Jan 09, 2011 2:25 pm |
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Joined: Feb 07, 2010
Posts: 7093
Trade Rating: +11
Location: Suffolk
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Change them to 1.1 injectors, and live with it
They drink like a b***h, its just the way TU engines are 
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| Team Impossible Possible
The only way of finding the limits of the possible is by going beyond them into the impossible - Arthur C. Clarke
Forged 1.6 Turbo
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Posted: Sun Jan 09, 2011 2:29 pm |
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Joined: Mar 03, 2010
Posts: 2636
Trade Rating: +11
Location: Black Country Ay I
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Fuel economy goes down in the winter, your radio, lights, heater blowers and air con (if you have it) all take a chunk out of your fuel ecomony, not to mention the cold air is denser so that will lower your mpg too
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Posted: Sun Jan 09, 2011 2:30 pm |
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Joined: Feb 07, 2010
Posts: 7093
Trade Rating: +11
Location: Suffolk
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| Andrewxps wrote: |
| Fuel economy goes down in the winter, your radio, lights, heater blowers and air con (if you have it) all take a chunk out of your fuel ecomony, not to mention the cold air is denser so that will lower your mpg too |
Denser air is better for an engine though, they perform better, so surely it will go up?
As the thinner the air the more the engine will need to work
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| Team Impossible Possible
The only way of finding the limits of the possible is by going beyond them into the impossible - Arthur C. Clarke
Forged 1.6 Turbo
Click to see more
144Bhp @ 7PSi - 193.9Bhp @ 13psi
206 Gti Race Car
Click to see more
For all Race/Track Preparation, Feel Free to PM Me!
Whether its for a custom ratio gearbox or track-day alignment, I can help! | |
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Posted: Sun Jan 09, 2011 2:31 pm |
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Joined: Feb 07, 2010
Posts: 898
Trade Rating: +5
Location: Melton Mowbray Leicestershire
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What sort of driving do you do mainly, i find around town mine is only around 32-36mpg but as soon as i do some miles it soon goes up to 42mpg. Then of course on the motorway i can normally expect 45-50mpg.
You said you changed the plugs but when was it last fully serviced oil and filter's etc?
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Posted: Sun Jan 09, 2011 2:32 pm |
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Joined: Feb 07, 2010
Posts: 3948
Trade Rating: +7
Location: A Track near you ;)
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| addaz wrote: |
| Andrewxps wrote: |
| Fuel economy goes down in the winter, your radio, lights, heater blowers and air con (if you have it) all take a chunk out of your fuel ecomony, not to mention the cold air is denser so that will lower your mpg too |
Denser air is better for an engine though, they perform better, so surely it will go up?
As the thinner the air the more the engine will need to work |
Denser air means more fuel 
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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: Sun Jan 09, 2011 2:34 pm |
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Joined: Feb 07, 2010
Posts: 7093
Trade Rating: +11
Location: Suffolk
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| Mattie-VTs wrote: |
| addaz wrote: |
| Andrewxps wrote: |
| Fuel economy goes down in the winter, your radio, lights, heater blowers and air con (if you have it) all take a chunk out of your fuel ecomony, not to mention the cold air is denser so that will lower your mpg too |
Denser air is better for an engine though, they perform better, so surely it will go up?
As the thinner the air the more the engine will need to work |
Denser air means more fuel |
Shush 
Im just thinking of theories, as less air means the engine has to work harder, meaning it needs to draw in twice as much air to match the performance of the winter?
Btw shell fuel saver fuel is crap
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| Team Impossible Possible
The only way of finding the limits of the possible is by going beyond them into the impossible - Arthur C. Clarke
Forged 1.6 Turbo
Click to see more
144Bhp @ 7PSi - 193.9Bhp @ 13psi
206 Gti Race Car
Click to see more
For all Race/Track Preparation, Feel Free to PM Me!
Whether its for a custom ratio gearbox or track-day alignment, I can help! | |
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Posted: Sun Jan 09, 2011 2:38 pm |
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Joined: Mar 03, 2010
Posts: 2636
Trade Rating: +11
Location: Black Country Ay I
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I use V-Power because I reckon the 99 RON fuel has to be better for the engine's life span than regular
Denser air is more power because there is a bigger explosion per full cycle in the cylinder, but because the air is thicker more fuel is injected to keep the same air to fuel ratio
To the OP, that isn't really bad, as Addaz said all the TUs are like that, you'll notice it might slightly go up in the summer
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Posted: Sun Jan 09, 2011 2:42 pm |
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Joined: Feb 07, 2010
Posts: 3948
Trade Rating: +7
Location: A Track near you ;)
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| addaz wrote: |
| Mattie-VTs wrote: |
| addaz wrote: |
| Andrewxps wrote: |
| Fuel economy goes down in the winter, your radio, lights, heater blowers and air con (if you have it) all take a chunk out of your fuel ecomony, not to mention the cold air is denser so that will lower your mpg too |
Denser air is better for an engine though, they perform better, so surely it will go up?
As the thinner the air the more the engine will need to work |
Denser air means more fuel |
Shush
Im just thinking of theories, as less air means the engine has to work harder, meaning it needs to draw in twice as much air to match the performance of the winter?
Btw shell fuel saver fuel is crap |
hehe the car performs normal in warm air which gives good mpg because it doesnt need as much fuel as when in cold air where its more dense it will need more fuel
Ive noticed mine has dropped from 30mpg to 27mpg over the winter
Shell V-Power FTW anyway
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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: Sun Jan 09, 2011 2:48 pm |
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Joined: Feb 10, 2010
Posts: 4266
Trade Rating: +4
Location: Palestine
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Well Change all the filter,Fuel,oil,and Air filters,the most important one is Air,because it's the one letting the air go to the engine,so if it's clogged,then it will consume more fuel,it's like when your breath.engine breath too,so don't shock it..lol
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Posted: Sun Jan 09, 2011 3:03 pm |
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Joined: Feb 07, 2010
Posts: 1264
Trade Rating: +28
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My 1.4 is ridiculously thirsty! Doesn't hep though I only do 10 miles a day driving so it barely gets warm and it's got to work/got home
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Posted: Sun Jan 09, 2011 3:27 pm |
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Joined: Oct 03, 2010
Posts: 417
Trade Rating: +1
Location: Neath, South Wales.
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Think yourself lucky you could have a 1600
mines one thirsty pig tbh
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Posted: Sun Jan 09, 2011 3:31 pm |
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Joined: Feb 07, 2010
Posts: 2505
Trade Rating: +19
Location: West mids
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| Spanerman wrote: |
Think yourself lucky you could have a 1600
mines one thirsty pig tbh |
Lol think your self lucky to mate try having a 2.0 on tb lol
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Posted: Sun Jan 09, 2011 3:50 pm |
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Joined: Jan 09, 2011
Posts: 4
Trade Rating: 0
Location: Portsmouth UK
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Surely it's not "normal" is it ??? It's my wife's car, my Y reg Avensis 1.8 vvti estate does better @ 35mpg despite the density of the air ! We both do mainly local runs.
Oh, I should have also said... I did an oil / filter change & changed the air filter too, this 206 has done just over 70kmiles.
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Posted: Mon Jan 10, 2011 9:37 am |
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Joined: Nov 27, 2010
Posts: 11520
Trade Rating: +10
Location: What's it to you? ? ?
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| GreenTrees wrote: |
We are getting a lousy 32mpg from my wifes V reg 1.4 petrol.
Any ideas would be most welcome |
There's nothing wrong with it, that's what a TU3 powered 206 will do average mpg driven around town
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