Omega Owners Forum - High fuel consumption.

middy

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Drives: omega 2.2DTi

High fuel consumption.
15. Mar 2011 at 18:01

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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« Last Edit: 15. Mar 2011 at 18:05 by middy »

The only stupid question you have, is the one you don't ask !

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russ0205 Senior Member Offline Posts: 526 Gender: Drives: 2.6v6 cdx 02,megan 04,scenic monaco 01,	Re: High fuel consumption. Reply #1 - 15. Mar 2011 at 21:52 My dashboard readout lies about fuel consumption,
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sport Junior Member Offline Posts: 212 Stoke on Trent Drives: sport estate 2.2 corsa big wheelssxi	Re: High fuel consumption. Reply #2 - 15. Mar 2011 at 23:39 Did you reset the avg mpg when you are doing 70
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Andy B

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Bury Lancs
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Drives: 1999 3.0 Elite auto/TDM

Re: High fuel consumption.
Reply #3 - 15. Mar 2011 at 23:46

middy wrote on 15. Mar 2011 at 18:01:

.... 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

middy wrote on 15. Mar 2011 at 18:01:

............ 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 Wink

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middy Newbie Offline Posts: 26 HULL Gender: Drives: omega 2.2DTi	Re: High fuel consumption. Reply #4 - 16. Mar 2011 at 19:05 sport wrote on 15. Mar 2011 at 23:39: 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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middy

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Posts: 26
HULL
Gender: male

Drives: omega 2.2DTi

Re: High fuel consumption.
Reply #5 - 16. Mar 2011 at 19:15

Andy B wrote on 15. Mar 2011 at 23:46:

middy wrote on 15. Mar 2011 at 18:01:

.... 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

middy wrote on 15. Mar 2011 at 18:01:

............ 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 Wink

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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The only stupid question you have, is the one you don't ask !

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sierrapaul Junior Member Offline Posts: 123 Drives: elite v6	Re: High fuel consumption. Reply #6 - 16. Mar 2011 at 22:08 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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geoffr70 Omega Knight Offline Join the 3 litre club! Then the 10.5 l club woo! Posts: 1881 Sunderland Gender: Drives: 2000 f/l 3.0 Elite Saloon auto, 2000 f/l 3.0 MV6 Saloon manual, Dennis RS133 (occasionally!)	Re: High fuel consumption. Reply #7 - 16. Mar 2011 at 22:17 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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sierrapaul Junior Member Offline Posts: 123 Drives: elite v6	Re: High fuel consumption. Reply #8 - 16. Mar 2011 at 22:23 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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geoff Senior Member Offline Posts: 935 thornaby,stockton on tees Gender: Drives: r reg 2.5 v6 reflection	Re: High fuel consumption. Reply #9 - 17. Mar 2011 at 08:10 have you changed the fuel filter makes a big difference :
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middy Newbie Offline Posts: 26 HULL Gender: Drives: omega 2.2DTi	Re: High fuel consumption. Reply #10 - 17. Mar 2011 at 09:57 geoff wrote on 17. Mar 2011 at 08:10: have you changed the fuel filter makes a big difference : thanks for that tip .I'lll sort that one today
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star_whites Senior Member Offline Posts: 892 Rotherham Gender: Drives: 2001 2.6 Elite Auto	Re: High fuel consumption. Reply #11 - 17. Mar 2011 at 13:52 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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twiglet Senior Member Offline "Ellie" Posts: 720 Framlingham, Suffolk Gender: Drives: 53 Plate Omega 3.2 V6 24v Auto Elite Estate, in Black with ALL the toys!!	Re: High fuel consumption. Reply #12 - 17. Mar 2011 at 14:02 star_whites wrote on 17. Mar 2011 at 13:52: 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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middy Newbie Offline Posts: 26 HULL Gender: Drives: omega 2.2DTi	Re: High fuel consumption. Reply #13 - 27. Mar 2011 at 19:24 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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Road Hog Mad Intermediate Member Offline Posts: 381 Cheshire Gender: Drives: Rover 400 SLDi	Re: High fuel consumption. Reply #14 - 27. Mar 2011 at 19:28 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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