Omega Owners Forum
Chat Area => General Car Chat => Topic started by: Bent valve on 22 December 2010, 20:34:38
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My 3.0 litre auto estate Omegas fuel consumption has gone from 22mpg to 17mpg over the last week or so :(
I hope its just because of the crappy driving conditions and nothing more serious. Has anyone else seen a dramatic drop in mpg because of the weather?
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If anything mine has gone up! I'm running a manual oil burner. Because the journeys are slower due to the weather the car is warming up properly rather than half warm on my normal commute. Also the slower driving has helped, I average 23/24 without the snow, up closer to 30 now :y
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i've not used my car in about a month! :o
So fuel consumption has been good ;D
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Mine on last tank was 19.5mpg, which I thought was quite good, seeing as I left it idling for about 3hrs on Saturday, and have made extensive use of snow mode.
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Mine on last tank was 19.5mpg, which I thought was quite good, seeing as I left it idling for about 3hrs on Saturday, and have made extensive use of snow mode.
3 hrs idling? how come? :-?
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Mine on last tank was 19.5mpg, which I thought was quite good, seeing as I left it idling for about 3hrs on Saturday, and have made extensive use of snow mode.
3 hrs idling? how come? :-?
Left it deicing when I cleared the driveway... ...then I went in for a cup of tea... ...then I got distracted... ::)
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Mine on last tank was 19.5mpg, which I thought was quite good, seeing as I left it idling for about 3hrs on Saturday, and have made extensive use of snow mode.
3 hrs idling? how come? :-?
Left it deicing when I cleared the driveway... ...then I went in for a cup of tea... ...then I got distracted... ::)
Though by the time I remembered, the windscreen was free of ice ;D
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Mine on last tank was 19.5mpg, which I thought was quite good, seeing as I left it idling for about 3hrs on Saturday, and have made extensive use of snow mode.
3 hrs idling? how come? :-?
Left it deicing when I cleared the driveway... ...then I went in for a cup of tea... ...then I got distracted... ::)
Though by the time I remembered, the windscreen was free of ice ;D
Hehehe! :P
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Hi guys, ive just bought a 2.6 MV6 off Pedro. The best i can get out of it is 29mpg on a run, thats driving like a grandad. Is that normal for one of these? I could get better out of my Monza than that.
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Hi guys, ive just bought a 2.6 MV6 off Pedro. The best i can get out of it is 29mpg on a run, thats driving like a grandad. Is that normal for one of these? I could get better out of my Monza than that.
Depends on gearbox, and if thats urban or a cruise
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My 3.0 litre estate auto averaged 17.1 mpg for the last tank full. It was very cold and it was in permanent 'snow mode'. I have just driven up to Scotland with 4 people a large dog and a full roof box, I averaged 25.3 mpg. I was quite pleased with this ;D ;D ;D
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I drove to Pembrokeshire a couple of weeks ago (320 miles) and on the way there the MID average reading was 29.7, sitting at around 70 nost of the time. I was quite pleased with that. On the way back the M25 was the usual road to hell at 4pm on a Friday - averaging about 10mph, which dropped the average back down to around 27mpg.
My normal driving(almost no motorway) usually returns a reading of around 24mpg.
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i've not used my car in about a month! :o
So fuel consumption has been good ;D
division by zero is undefined !!! ;D :D
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I managed 35 mpg at one stage untill I left the M5 for the A417/419 on my trip down south a few weeks back and that wasn't particularly driving like a grandad .... 70/80 mph . It still read 29 mpg when I got back home after dragging an Astra on an A frame from the south coast. :y
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I drove to Pembrokeshire a couple of weeks ago (320 miles) and on the way there the MID average reading was 29.7, sitting at around 70 nost of the time. I was quite pleased with that. On the way back the M25 was the usual road to hell at 4pm on a Friday - averaging about 10mph, which dropped the average back down to around 27mpg.
My normal driving(almost no motorway) usually returns a reading of around 24mpg.
LPG? Will give inaccurate results. Actual (petrol) MPG will be a bit higher, LPG mpg a shade lower ime
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Depends on gearbox, and if thats urban or a cruise
Were talking Auto here, on 250miles of motorway at a very steady 70mph, coasting down hills etc. Im sure theres something wrong with the car. I just squeezed 400 miles out of a tank.
I have to be honest im very dissapointed in the fuel consumption. If its going to remain like this il consider moving the car on. Drving my 24v senator in the same way i would have got 35mpg out of it, the monza wouldnt be far behind.
Is it possible that the lamdas are tired?
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Depends on gearbox, and if thats urban or a cruise
Were talking Auto here, on 250miles of motorway at a very steady 70mph, coasting down hills etc. Im sure theres something wrong with the car. I just squeezed 400 miles out of a tank.
I have to be honest im very dissapointed in the fuel consumption. If its going to remain like this il consider moving the car on. Drving my 24v senator in the same way i would have got 35mpg out of it, the monza wouldnt be far behind.
Is it possible that the lamdas are tired?
That does seem low - autos obviously take a hit around town, but on a motorway cruise, I would be expecting an easy mid-30s from a 2.5/2.6 and low 30s from a 3.0/3.2
I guess start off with a decent service, and see what happens then...
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Well, the gearbox fluid does need doing, infact the new filter/gaskets turned up this morning. Ive also noticed a slight blow on the exhast. That wont be helping the Lambda. I also checked the tyre pressures and they were all 24PSI. Pretty pissed off about that as it was at vauxhall last week having the tracking done, they should have check the tyre pressures before doing anything else!
Another thing is that the climate has been set to Auto at 21 degrees, does that mean that the air-con has been constantly on? Iv switched it to ECO.
Im sure its more than likely a combination of these things.
Il keep you informed.
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My average for the week before Christmas dropped to 23mpg, where it is normally around the 28mpg mark - putting it down to the use of snow mode, being stuck once or twice, and warming the car up :)
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My 24v Senator was also as economicaL if not more so, than both my current and previous 2.5 Omegas. Although the current one runs on Gas so the MPG figures on the MID wouldnt be very accurate.
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urban, over the last 24 hours, 28.8mpg
2.6 mv6 auto
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My 24v Senator was also as economicaL if not more so, than both my current and previous 2.5 Omegas. Although the current one runs on Gas so the MPG figures on the MID wouldnt be very accurate.
I'd say that overall, my 24v Senator was more economical than my 3.0 Omega. Around town mine will do about 20/21mpg whereas the Senator would be 22/23mpg, not a huge difference but it was better.
If you noticed aprox 3000 in the Senator was aprox 90mph, but the same revs in my Omega is nearer 80mph.
I do have to say though, that I got 35pmg going south a few months ago and I don't remember ever getting quite that from the Senator. :-?
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Mine has improved a lot since the weather has got better, I guess it was just down to driving in shitty conditions.
Just think how much extra carbon must have been released into the atmosphere because of the cold weather,
Cars running ineffiecnently, heating on full blast in houses ect.. it must be that global warming whats doing it ;D
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According to the trip computer mine has averaged 19.7mpg (I reckon it's actually less) for the last few thousand miles-thats why i need to get the wife a more economical run around.
Steve
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Well i took the car to sheffield again yesterday, this time with the right tyre pressures and the air-con off. Was there any improvement? No. Managed 29mpg going there in very favourable conditions, half the journey was spent at 50mph. On the way home i gave it some beans and managed 27mph, so from now on il drive it like i stole it!
As a car, compared to my old carlton estate it just isnt as good. It's marginally better in terms of handling but thats about it. Still thats progress for you.
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As a car, compared to my old carlton estate it just isnt as good. It's marginally better in terms of handling but thats about it. Still thats progress for you.
Different overall gearing from a Senator (presume the same for a Carlton 24v) and heavier.
Have you check cam belt timing? If you've never worked on it yourself don't be surprised if it's a tooth or 2 out, the lads that do a lot of work on these cars seem to find various cars with timing issues. :y
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As a car, compared to my old carlton estate it just isnt as good. It's marginally better in terms of handling but thats about it. Still thats progress for you.
Different overall gearing from a Senator (presume the same for a Carlton 24v) and heavier.
Have you check cam belt timing? If you've never worked on it yourself don't be surprised if it's a tooth or 2 out, the lads that do a lot of work on these cars seem to find various cars with timing issues. :y
Too many garages think they can do the cambelt without the locking/timing kit....
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I have just done a 914 mile round trip from cornwall to folkestone and back with a little driving around while there and used just 18 gallons of fuel :o,sadly it was'nt in the mig,I was feeling skint so took my old 406 hdi instead,it averaged 52mpg which is pretty good at a steady 80 or so on the motorways .God knows how much the mig would have used as I have never seen better than 28mpg on the display,oh and the 406 has done 183000 miles :o :y :y
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urban, over the last 24 hours, 28.8mpg
2.6 mv6 auto
mines over the last 100 miles all city 19.8 does that sound about right :-?
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My Senator is more economical than the Omega and cheaper to insure.
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My mig consumes anywhere from 7 to 9 litres on 100 km (open road) depending on the driving style, but in city consumption is around 13 to 14 litres per 100 km
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I'd say that overall, my 24v Senator was more economical than my 3.0 Omega. Around town mine will do about 20/21mpg whereas the Senator would be 22/23mpg, not a huge difference but it was better.
If you noticed aprox 3000 in the Senator was aprox 90mph, but the same revs in my Omega is nearer 80mph.
I do have to say though, that I got 35pmg going south a few months ago and I don't remember ever getting quite that from the Senator.
The best i got out of a senator was 38mpg, in a manual chipped car, the auto would do 36mph the monza would easily do 32mpg, my old estate was about the same.
Different overall gearing from a Senator (presume the same for a Carlton 24v) and heavier.
Have you check cam belt timing? If you've never worked on it yourself don't be surprised if it's a tooth or 2 out, the lads that do a lot of work on these cars seem to find various cars with timing issues.
The cambelt has been done properly. I the car has been stood for long periods over the past 6 months. Could it be that the lambdas have rusted over perhaps? I checked the exhaust and theres a tiny blow right at the back so i doubt that will be having any effect.
It's wierd, i think the Senator is a bettter car than the Omega, but then i think the monza is better than the Senator! Thats mainly because the monza is the easiest to work on and by far the most reliable because its so simple! At the end of the day if i were to drive the Senator everyday it would be rotten within a year, the Omega however is newer and doesnt rust, ir drives the nicest and looks the smartest its just a shame the engine needs to be kept on top off constantly! I tend to find anything post 1995 from vauxhall have one inherant fault and thats the unreliable engine management systems they put in them.
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I get roughly 26-28mpg around town driving and approx 35mpg on a run. Towing the van behind, car fully laden with gear & family and I still get 22mpg, so not too bad ;D
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I get roughly 26-28mpg around town driving and approx 35mpg on a run. Towing the van behind, car fully laden with gear & family and I still get 22mpg, so not too bad ;D
mine only does around 17mpg towing the pikey palace,is your's a manual?
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I get roughly 26-28mpg around town driving and approx 35mpg on a run. Towing the van behind, car fully laden with gear & family and I still get 22mpg, so not too bad ;D
mine only does around 17mpg towing the pikey palace,is your's a manual?
I averaged around 19 last year when towing to & from French France.
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The only towing of the van that I have done with the mig is from west Cornwall into Devon and back so not much good hill free running to be had, hopefully this year may go a bit further afield :y
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Well ive come to the conclusion theres something wrong with, and my hunch is that its either the timing or the Lambdas!