24MPG FF 182

[wilcooper]

Hi guys,

I've had my 182 for couple of months now and my daily commute to work is roughly 7miles (so about 15miles each day). However I'm constantly reading 24-24.4mpg.

I sometimes use CC when possible or when I cant be bothered to use feet. I sometimes put my foot down for fun but not that often.

After about a week of owning it, I got the exhaust warning light which we diagnosed as lambda/02 sensor pre cat, plugged in - reset it and it's never been back on (unless I wheelspin accidentally - it flickers)

It has a catback miltek on. Passed MOT with no issues at all earlier this year.


Any ideas? Could lambda be causing issues?

Any help would be greatly appreciated as I thought I would be atleast around 30MPG.

Thanks

 

[DrR]

You worked it out properly or just going off the computer?

 

[sbridgey]

Probably a lambda sensor issue.

 

[wilcooper]

I've been going off computer. I'm sure I did roughly 250 miles on majority of a tank other week (until light was on)

 

[rftaylor]

mine is exactly the same buddy, hope you find the route of our problem lol!

 

[treemanx]

Erasing the fault is just sweeping it under the carpet? I had the O2 sensor fault and slightly poorer mpg, lambda sensor sorted it.

 

[LaurenB]

Oxygen sensor not working is a common reason for poor fuel consumption.

 

[easym5]

Something definitly wrong it should be above thirty mpg mate

 

[wilcooper]

Erasing the fault is just sweeping it under the carpet? I had the O2 sensor fault and slightly poorer mpg, lambda sensor sorted it.

I would have thought it would have shown itself again though if it was a fault.

 

[Martin.]

Something definitly wrong it should be above thirty mpg mate

I never get above 30 unless on a very long motorway journey.

Mine is average at about 28 at the moment.

From owning the car since Feb I have averaged 25mpg all in.

 

[frayz]

Something deffo wrong.

I do 52miles a day commute on country lanes, A & B roads. Even when I give her death I still get 34mpg. Driving normally I get 38 mpg and on the motorway I get 42/44.

I only use Tesco Momentum fuel and the car has done approx 40k miles with zero modifications.

Kind regards

Frayz

 

[Dan519]

Something definitly wrong it should be above thirty mpg mate

should be closer to 40 without a lot of dificulty

I never get above 30 unless on a very long motorway journey.

Mine is average at about 28 at the moment.

From owning the car since Feb I have averaged 25mpg all in.

you have an issue unless you're in stop start traffic and country lanes literally all the time. Most cars I see are 36-38mpg with mixed driving. I can make a cup do 44mpg with little effort

 

[.Steve]

Something deffo wrong.

I do 52miles a day commute on country lanes, A & B roads. Even when I give her death I still get 34mpg. Driving normally I get 38 mpg and on the motorway I get 42/44.

I only use Tesco Momentum fuel and the car has done approx 40k miles with zero modifications.

Kind regards

Frayz

Your 182 gets 38 to 44 mpg? I've got a 1.2 and mine gets 42 max! The computers currently reading circa 35.

 

[Martin.]

in stop start traffic literally all the time.

This. And a very heavy foot.

 

[MartinR]

Mines fucked then lol. New lambda sensors, new cts and stat and still only see about 28mpg ! But my commute is only 5 miles each way which is most likely my problem.

 

[Dave Hester]

So your only doing 7 miles there and back

Your engine will have only just warmed up hence the low mpg

Try a longer journey and reset the clock

 

[Don]

Mines fucked then lol. New lambda sensors, new cts and stat and still only see about 28mpg ! But my commute is only 5 miles each way which is most likely my problem.

Mart...heavy right foot and you dont take it outta 2nd!!! :race:

 

[Dan519]

Your 182 gets 38 to 44 mpg? I've got a 1.2 and mine gets 42 max! The computers currently reading circa 35.

1.2s aren't economical. You have to drive them hard to make any progress and just keep up. under powered and shifting a fair weight around

 

[frayz]

Yes Steve, it's always surprised me at how good one fuel it is.

Ive worked it out at the pumps too and the computer is pretty much spot on too. Granted I don cane it about so much anymore, but not worried about putting my foot down. She's never gone below 33mpg average and that includes trips to the ring.

I find if I use Vpower then the mpg isn't as good as the tesco momentum.

Ive mapped the Impreza on both vpower and momentum and there's no difference in power/torque at all on that. Tesco is more local to me and its cheaper.

 

[Dan519]

This. And a very heavy foot.

should still be better on the motorway though. My ITB'd 172 averaged over 40 on the motorway at several beans from Southampton to Bedford

 

[MartinR]

Mart...heavy right foot and you dont take it outta 2nd!!! :race:

Flol Don that must be the problem i thought i only had 2 gears

 

[john182rs]

Your moaning about 24mpg? Try town driving between 8 and 16mpg... Thats a killer. Although on the motorway when im just taking it like a granny, I often see 45-50mpg.

 

[Dan519]

Something definitly wrong it should be above thirty mpg mate

Your moaning about 24mpg? Try town driving between 8 and 16mpg... Thats a killer. Although on the motorway when im just taking it like a granny, I often see 45-50mpg.

WHAT??? the worst mine gets to round town is 25. how the hell are you driving????

 

[Martin.]

Your moaning about 24mpg? Try town driving between 8 and 16mpg... Thats a killer. Although on the motorway when im just taking it like a granny, I often see 45-50mpg.

I get about 17-18mpg on track.

 

[Martin.]

should still be better on the motorway though. My ITB'd 172 averaged over 40 on the motorway at several beans from Southampton to Bedford

On the motorway I've seen 39 before once. That's with the CC on and literally sitting at 75 the whole way home for a good hour and half +

 

[sbridgey]

This is what i get on the motorway

Untitled by sbridgey, on Flickr

 

[john182rs]

WHAT??? the worst mine gets to round town is 25. how the hell are you driving????

I drive how an IAM instructor told me to drive.... Its alot of stop and start driving, if I use the ring road I averaged 20-24mpg at around 40mph in 5th.

 

[clio37]

I never get above 30 unless on a very long motorway journey.

Mine is average at about 28 at the moment.

From owning the car since Feb I have averaged 25mpg all in.

This^^^^
My work is 4.2 miles away I doit 4 times a day and normaly get 28-29 mpg
But go anywere motorway I get mid 30's even had it telling me 40's before!!

 

[john182rs]

This^^^^
My work is 4.2 miles away I doit 4 times a day and normaly get 28-29 mpg
But go anywere motorway I get mid 30's even had it telling me 40's before!!

Try it on a speed limiter at 60mph.... Or if not a speed limiter just try for 60mph as Ive seen the 50mpg before, and if I am feeling really tight and easy on time, I have followed lorries doing 50mph+ and seen 57mpg.... Not for long though...

 

[Jeff456]

Try it on a speed limiter at 60mph.... Or if not a speed limiter just try for 60mph as Ive seen the 50mpg before, and if I am feeling really tight and easy on time, I have followed lorries doing 50mph+ and seen 57mpg.... Not for long though...

So MPG should be better with speed limiter on rather than cruise?

 

[clio37]

Ive done that in my megane one night on the way back from the Fast Show . Just sat about 54mph behind a lorry slow but I saved a huge amout of fuel.
Speed limiter?
Im ok with 29 mpg cause its uphill to my work and the car doesnt rearly get upto temperature before im at my destination. I will reset it on my way for dinner at 3 see what I can get driving it like a granny

 

[sbridgey]

So MPG should be better with speed limiter on rather than cruise?

Cruise eases off down down hill and accelerates up hill, you want to be doing the opposite really.

 

[Don]

Cruise will accelerate fully on an incline (it doesnt understand to maintain constant velocity!!!) As for downhill...it tries to engine brake when going downhill to maintain set CC speed. Its better on a constant flat run!!! Pmsl

 

[Paul182]

i also think i have issues with my mpg. just the other day did 60 miles and got 31 mpg going 70mph ! if i get some live data going what kind of values should i be seeing for different sensors?

 

[Alastair.]

Lambda issue I reckon, sometimes they won't bring on the warning lamp, needs to be plugged into clip to see if the upstream sensor is fluctuating correctly. Changed one on a fr4 laguna the other week, failed on emissions and his trip was reading 19mpg. He's now back to 33mpg

 

[Tony Hunter]

Or thermostat.

 

[john182rs]

Or thermostat.

How do i check that then?

 

[paddyyyyy]

I did Worcester to Bristol at the weekend so about 60 - 70 miles. Did this 60 behind a lorry most of the way and ended the trip in the upper 40's on MPG. Mas incredibly impressed with that.

 

[yeecup]

my commute is roughly 2 miles a day each way, in edinburgh, heavy traffic, stop start etc, and im showing 24mpg just now.

 

[Gandi69]

I think my thermostat is stuck open ever so slightly as it takes a while to get up to half. I'm also getting between 22-24mpg so could be a duff lambda altough I've had it on the reader and no codes came up. Having said that I sit in traffic an awful lot and it only does 18 miles a day, think I'll give it a good blast this xmas break as on a run it seems to sort it out