Low MPG - 27 on a 1.2! engine faults galore...

[tomsmith789]

Hello,

I was wondering if you could help...

Just bought a new car (cat D with no service history and 03 clio 1.2 dynamique with 50000 on the clock) and I took it in to renault to get them to check it over. They did a diagnostics test and came up with a load of airbag faults, which I knew would come up but also a few others. These are as follows (I read this off the sheet):

DF236 +After Relay Supply CC.0
DF137 Motorised Throttle 1.DEF
DF135 Brake Pedal Sensor Circuit 1.DEF
DF116 Fuel Circuit Functional Fault 5.DEF


Now I have been getting about 27 mpg (out of a 1.2!) and I am most concerned about this. Will any of these faults be the cause of this? Bearing in mind I am only keeping the car for 6 months are any of these faults worth getting sorted?

I also had the emissions light on for the first week of ownership but that seems to have gone off now.

Any help would be most appreciated!

 

[Middo]

you need to get that sorted, as if you sell it on the buyer aint going to be impressed. especially as its chucking petrol out the back (my 1.2 averaged 50mpg)

not that sure to be honest on the diagnostics side of it

 

[f0xy]

you need to get that sorted, as if you sell it on the buyer aint going to be impressed. especially as its chucking petrol out the back (my 1.2 averaged 50mpg)

not that sure to be honest on the diagnostics side of it

50mpg

i drive my 2005 1.2 really smooth, hardly ever rag it and i dont usually see any higher than 33 :dapprove:

its always done this, straight from when it was purchased.... what the hell could it be?

 

[tomsmith789]

Anyone know the diagnositcs stuff more?

Does anyone also know how much it would cost to fit a whole new engine ?

 

[f0xy]

pm edde

he will most probably know about the diags

 

[tomsmith789]

lol, tried that inbox full

Well i guess its a bit re assuring to know its not just me getting stupid mpg.

I have just done some calcs and at the moment i do about 2k miles a month. If I keep the car for 6 more months (as I plan) getting 27 instead of 45 will cost well over 500 quid.

Based on that it must be worth getting it sorted!

Anyone else know anymore?

 

[f0xy]

yeh would be appreciated if anyone knows any more... ive put up with it thinking it was just the way it is... but nearly 20mpg out im acctually shocked!

i drove to cambridge a few weeks back, all motorways, still never saw any higher than 33

 

[Laura]

doesnt sound good i used to get 46ish out my 1.2

 

[A18XHO]

i gun mine everywhere and get 36mpg lol havent tried a econmical run yet...

 

[tomsmith789]

I know it sounds bloody silly doesn't it!

When I drive exceptionally sensibly e.g. sticking behind lorries at 56 mph on motorway and not taking it over 3000 rpm I get 33.

When I rag it, e.g. change at 5550 rpm I get 16mpg!!!!!

I may as well connect my tank up to the local shell garage and give a bit to everyone!

 

[f0xy]

hmmm real odd... i mentioned it at my 18k service (21k now) along with a few other things (incl radio code and tdc sensor) and they couldnt give a s**t about anything i said... thats reno for you i suppose

 

[bmh.01]

50mpg

i drive my 2005 1.2 really smooth, hardly ever rag it and i dont usually see any higher than 33 :dapprove:

its always done this, straight from when it was purchased.... what the hell could it be?

My old one used to be the same towards then end of when I had it, no idea what caused it but got shot before that and the 2nd gear syncro got any worse. Get better mpg out the 1.6, 40mpg all the way baby :rasp:.

 

[Rob22]

50 i got my 1.2 brand new and when i rag it it does about 29-33! a long motorway run usually gives around 38 and my emissions light came on a few weeks ago thinking i should get it looked at??

 

[davebem]

Check the air filter and take the pipes out and make sure they are not clogged up with anything especially if the car has been in a crash and been on its side or upside down. Could also be a ignition system fault which will be a pain to find.

 

[tomsmith789]

I have recently fitted an induction kit so that should have solved that shouldn't it?

Or do you mean other pipes not just the airfilter pipes?

Thanks for all your help guys.

Even if i can just save a couple of mpg it will save me alot of money

 

[Timmsy]

50mpg

i drive my 2005 1.2 really smooth, hardly ever rag it and i dont usually see any higher than 33 :dapprove:

its always done this, straight from when it was purchased.... what the hell could it be?

my 2004 1.2 always gets 42 which isnt bad considering my brother other halfs new 2006 clio 105 DCi only gets 46

i wouldnt settle for anything less than 38 and thats when im giving it a good thrashing.

 

[Timmsy]

yeh would be appreciated if anyone knows any more... ive put up with it thinking it was just the way it is... but nearly 20mpg out im acctually shocked!

i drove to cambridge a few weeks back, all motorways, still never saw any higher than 33

have you reset your your digital thing for a while as when i picked up my car when i goit it it was on 39mpg and stuck on that for about 600miles till i had reset it

 

[f0xy]

yeah reset it before that long drive to cambridge (from manchester)... ive done another 4k since then though still no better

 

[davebem]

I have recently fitted an induction kit so that should have solved that shouldn't it?

Or do you mean other pipes not just the airfilter pipes?

Thanks for all your help guys.

Even if i can just save a couple of mpg it will save me alot of money

It proberly wont help tbh, more air, more fuel?

 

[Timmsy]

hmm that is really strange. ive done 4k since i brought my car in october and i thought 38 was bad.

an i supppose renault said nothing about it. who do you get to service and mot it?

 

[f0xy]

i even mentioned it to them before the 18k service, also mentioned the TDC sensor because it sometimes dosent start... the shouldnt give a s**t about anything i said tbh...

not old enough for an MOT yet its jan 2005 registered.

 

[heathbrowning]

Maybe the 2nd and 4th faults in your list are contributing to your bad mph. I would get those sorted if I were you. My 1.2 gives me great mph. Wierd how people are getting really bad mph though, even with new cars.

 

[tomsmith789]

I have only had it a few days so no one as of yet.

Anyone else know anymore?

 

[tomsmith789]

Mine used to have trouble starting. One night tried for about 10mins! that little electronic engine fault light came up too and i seemed to lose power as if only one or two cylinders were working.

Weird.

 

[jessica_laurie]

my 1.2 on a 02 plate does 42mpg.. i think thats quite low

oh and i dont rag the tits of my car. im a sensible driver

 

[tomsmith789]

Hmm that is astronomical compared to mine!

I am sensible all the time, only rag it when no one about and conditions suit.

 

[Russ.]

i get approx 260miles to a full tank in my car, always been the same as long as ive had it (15months ish) any opinions? it seems very poor 2 me, is it? or am i just expecting too much?

cheers, russ

 

[davebem]

I think you should all buy something more economical like a 172.

 

[C.slicker]

russ you are getting 23-24 mpg.

Yours is as bad as mine.

Yeah or something more economical like a bloody range rover!

 

[Russ.]

I think you should all buy something more economical like a 172.

i was thinking somethin more like a vee.

russ you are getting 23-24 mpg.

Yours is as bad as mine.

Yeah or something more economical like a bloody range rover!

mine runs fine though, only thing i can say is a few friends also have 1.2s and i can litterly pull 5-6 car lengths from them on 0-80mph. Must be all that extra fuel being burnt lol

 

[tomsmith789]

Yeah i think i perhaps get better performance but tbh its a price i would rather not pay.

With the extra i am paying in fuel i could insure and buy a 1.6!!!

 

[///AMG]

I get 800 miles a tank from my dci.. quite a change from the 260 I got in my 182.....:dapprove:

 

[Russ.]

WHAT?? i get same mpg as a 182? defo dont have the same power lmao

 

[heathbrowning]

Today I have just been going around the doors and I'm getting 45mpg. That'll ding dang do for me!

 

[Mells]

i get approx 260miles to a full tank in my car, always been the same as long as ive had it (15months ish) any opinions? it seems very poor 2 me, is it? or am i just expecting too much?

cheers, russ

dude, in my 1.2 on a bad tank I get 380 miles to a tank. If I drive like a nun I can usually get 420 no problems. Best I had last week on a run to Dorset was 437 miles to the red light. Could have kept going for another 20 or so miles!

 

[ZrByte]

Those of you getting very low MPG, Do you do a lot of motorway miles?
Also do you live or spend a lot of time in costal areas?

 

[tomsmith789]

Yes, I do alot of motorway miles and i get low mpg.

Why do you ask?

 

[heathbrowning]

Those of you getting very low MPG, Do you do a lot of motorway miles?
Also do you live or spend a lot of time in costal areas?

? I dont do any motorway miles and live 800 yards fron the North sea and get great mpg.
Whats the theory behind your question?

 

[Russ.]

i live in stoke so no where near the seaside lol dont really do many motorway miles either. i must just drive like colin mcrae

 

[ZrByte]

Those of you getting very low MPG, Do you do a lot of motorway miles?
Also do you live or spend a lot of time in costal areas?

? I dont do any motorway miles and live 800 yards fron the North sea and get great mpg.
Whats the theory behind your question?

Large amounts of moisture in the air effect MPG and engine performance. Couldnt remember if it was for better or for worse though.