Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: middy on 15 March 2011, 17:01:31
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2.2 Tdi Elite 03
The dashboard readout tells me that my fuel consumption is around 30 - 33 mpg. This is doing runs on the open road at 70 mph so i should be getting somewhere around the 50 mark.
Have filled the tank completely and will verify the fuel figures once I've got through half a tank.
There are no fault codes present and I had the emissions checked which it passed through without any hesitation, the oil level is correct , last changed 10 months ago (6000 miles).Had the car on a ramp and inspected for leaks, found nothing but thats not to say one does'nt exist.
Recent work includes crankshaft sensor replacement, and angle of rotation sensor replacement on fuel pump. The fuel pump issue was carried out about 4 months ago but it is only in the last month whilst doing high mileage that I've noticed a consumption problem.
If anyone can give me some direction, it would be greatly appreciated.Thanks.
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My dashboard readout lies about fuel consumption,
:( :( :( :( :( :( :( :( :(
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Did you reset the avg mpg when you are doing 70
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.... so i should be getting somewhere around the 50 mark. ....
Where does this figure come from? My 1.7TD Astra only does 45-ish mpg
............ last changed 10 months ago (6000 miles).......
You should be changing it more frequently than this. They suggest 3/4000 miles here although my Astra get it done about every 5000 miles, it's easier to keep track ;) ;)
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Did you reset the avg mpg when you are doing 70
Yes I reset all trip counters, but wont know if its lying until I top up after I've got through half a tank. done about 140 miles at the mo and the needle has dropped to about 1/4 tank used.
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.... so i should be getting somewhere around the 50 mark. ....
Where does this figure come from? My 1.7TD Astra only does 45-ish mpg
............ last changed 10 months ago (6000 miles).......
You should be changing it more frequently than this. They suggest 3/4000 miles here although my Astra get it done about every 5000 miles, it's easier to keep track ;) ;)
Ok maybe 50 mpg is pushing it a bit, but there is no way it should be in the low 30's on a 70 mile round trip.
as for the oil, genuinely though i was on the ball with my change routine ! oh well it's due now anyway so time to jack her up !
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im only just getting 34mpg outa my 2 litre 8valve cavalier on a run.my mates got a 2.2 vectra and thats crap on fuel.even after he had a full service at vx its only doing 31 on a run.paul
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makes me pleased with my 34 mpg from 3.0 auto elite on a 70-80 run! And sometimes alot faster!
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im getting 32 outa my 3litre auto elite on a run and abbout 27 round town its realy good for a v6.paul :)
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have you changed the fuel filter makes a big difference :y :y : :y
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have you changed the fuel filter makes a big difference :y :y : :y
thanks for that tip .I'lll sort that one today
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Your lucky Ive been averaging around 14 mpg around town. Ok I have a heavy foot but still think its low.
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Your lucky Ive been averaging around 14 mpg around town. Ok I have a heavy foot but still think its low.
Sounds like you are actually towing your town around to get those figures!! :-/
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The dashboard readout was correct in terms of fuel. I changed fuel and air filter and renewed the oil. I'm now getting around the 40 MPG mark which is a considerable improvement :)
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the first half of the full tank has more than the rest of the 1/2 tank if that makes sense.
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the first half of the full tank has more than the rest of the 1/2 tank if that makes sense.
Wasn't going to comment but how is one half of a fuel tank bigger than theother half of the same tank?? :o :o
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Probably the fuel filler pipe bit? :)
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You will get more mpg out of the second half of the tank as you are not lugging around so much weight in fuel :y Id like to get more than 27mpg out of my 3.2 ;D
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You will get more mpg out of the second half of the tank as you are not lugging around so much weight in fuel :y Id like to get more than 27mpg out of my 3.2 ;D
I think this will save a negligible amount, especially on a lard a**e as heavy as a mig
perceived differences in miles/half tank will probably be down to float/sender/needle calibration, and filler neck as said.
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Probably the fuel filler pipe bit? :)
:P
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Your lucky Ive been averaging around 14 mpg around town. Ok I have a heavy foot but still think its low.
According to the readout on mine I'm getting 18.6 mpg, it's all town work though.
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When I had my Omega 3.0 MV6 Auto, I was getting 16 - 17MPG, 2 mile trip to and from work. Terrible MPG considering my temporary car (Rover 400 SLDi) is doing 45MPG to and from work and 65MPG on the motorway. It runs on cooking oil, despite people scaremongering the car still runs fine on chip fat.
The best I have ever got out of the Omega was 44.8 MPG on cruise at 55MPH with correct tyre pressures, empty boot and a skinny mate.
The Rover on the motorway, well I think the fuel gauge is broke. 8-)
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I similarly get about 17mpg on the run to and from work (which is why i dont use the omega anymore for that tbh!). On motorways it jumps up to about 40mpg, however.
But i had a query about this. It feels as if i have to rev the engine harder than i would expect to get her moving, which i think may be contributing to a higher mpg. It would be nice to get it to something more like 20-25mpg on local roads.
For instance, i went from Cannock to Manchester and back the other day, by the time i got off the motorway the readout read 31.7mpg but then in the 3 or 4 miles from there to home that had dropped to 30.1mpg. Significant effect then, really, given that it was a 150 mile round trip (in manchester i drove to the airport parking area and back again, so not long spent faffing around!).
Is there anything simple i can do (other than the right foot option, as im trying my hardest not to overuse the loud pedal when im driving around at low speed) that could improve the local road fuel consumption. It feels as if its a little low on power low end....
(one thing of note, when changing the cam covers a while back i noticed the connector in the plug leads had snapped off on cylinder 2. Its not misfiring, but if i tried to pull it out whilst running id get a nice little shock, which suggests it might not be the most efficient spark in the world. Could this be having an effect on mpg?)