Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: Tweakycar on 19 April 2012, 16:28:51

Title: MPG
Post by: Tweakycar on 19 April 2012, 16:28:51
Well I've now put £80 of fuel in my 2.6 V6,I've now calmed down with my driving and driving it sensibly and all I'm getting is 24.1 mpg and thats driving on motorway and some A roads.....I can see why now the car seemed such a bargain...What could I do the improve the mpg ?
Title: Re: MPG
Post by: geoffr70 on 19 April 2012, 16:35:20
I'd start with the obvious like giving it a full service changing all filters and fluids etc, making sure breathers are clean. With that mpg I'm assuming it's an auto? These learn your driving style and will change behaviour (like timing of gear change etc) accordingly. This is evident to me over a few tanks of fuel when going from driving like a nutter to smooth and serenely.

If you've just calmed down it might still be adjusting. I only do short journeys and mainly drive my 3.0 auto elite, so by the time I stop it's not fully warmed up so i only get 18mpg ish
Title: Re: MPG
Post by: Entwood on 19 April 2012, 16:39:16
24.1 ....  is that off the computer or a "proper" calculation ??

Computer is not that reliable TBH .. correct way to calculate is to brim the tank at your regular garage and zero the trip meter. Some while later at the same garage/same pump preferably, brim it again.

Miles travelled against actual fuel used .. far more accurate than the computer
Title: Re: MPG
Post by: Andy B on 19 April 2012, 16:54:29
24.1 ....  is that off the computer or a "proper" calculation ??

...... far more accurate than the computer

I do a rough brim to brim check every now & again & find the trip computer isn't that far of the mark.  :-\ :-\
Title: Re: MPG
Post by: 2boxerdogs on 19 April 2012, 17:04:19
I do a 54 mile daily commute  on good A roads the 2.6 manual returns 27-30 mpg & the 2.2 auto estate 27-33mpg, on a long run I have got 33 from the 2.6 & 36 from the estate, around town both drop to around 18mpg all figures are from "brim filling" don't rely on the computer for accuracy.
Title: Re: MPG
Post by: Lazydocker on 19 April 2012, 17:15:10
24.1 ....  is that off the computer or a "proper" calculation ??

...... far more accurate than the computer

I do a rough brim to brim check every now & again & find the trip computer isn't that far of the mark.  :-\ :-\

My MFL I calculated it several times and found I was actually getting to within 0.1 of what it said ;)

The estate... Did it every time I filled with petrol (5 times in the first 4 weeks) but as I now run on LPG I've not really worried. It was also spot on when I checked it though :y
Title: Re: MPG
Post by: albitz on 19 April 2012, 17:29:26
Not much you can do in my experience.If you drive them on motorways they can be pleasantly economical for a big car.If you dont,the economy is shite,simple as that.Even driven very gently on LPG mine is costing 21p per mile because it rarely sees a motorway type road.
Keeping it well serviced and making sure stat is operating correctly will help,but wont make a huge difference imo.
Title: Re: MPG
Post by: rsymes2k on 19 April 2012, 17:48:29
ive got a 2.5 v6 and im getting 30mpg average
Title: Re: MPG
Post by: HockeyDave55 on 19 April 2012, 18:10:18
My normal comute to work is 13 roundabouts for 8 miles and another 5 in the sticks, I get 22ish on the computer....
I need to brim it and do a proper calc'
Title: Re: MPG
Post by: Tweakycar on 19 April 2012, 22:02:11
Thanks for everyones comments,I have certainly noticed a difference going from a 2.0 ltr Diesel 406 manual to a 2.6 V6 Auto..I guess it's the price you pay for comfort.
I'll give it a full service at the weekend and see if that improves the MPG,now where did I put my wallet...lol.
Title: Re: MPG
Post by: RobseyMV6 on 19 April 2012, 22:07:16
If your rocker covers are leaking in to plug wells this won't help mpg, one way you could get higher mpg is change rear diff, on motor way your's would rev higher then a 3.0/3.2 hence the extra cost on fuel, service first and see  :)
Title: Re: MPG
Post by: davethediver on 19 April 2012, 23:06:07
Thanks for everyones comments,I have certainly noticed a difference going from a 2.0 ltr Diesel 406 manual to a 2.6 V6 Auto..I guess it's the price you pay for comfort.
I'll give it a full service at the weekend and see if that improves the MPG,now where did I put my wallet...lol.

Pud diesel to a V6 omega ouch :'( :'( :'(
Title: Re: MPG
Post by: albitz on 20 April 2012, 05:10:52
ive got a 2.5 v6 and im getting 30mpg average

Presumably the car spends most of its time on motorways/trunk roads etc ?
Title: Re: MPG
Post by: geoffr70 on 21 April 2012, 02:34:12
Just got back from a 320 mile round trip picking up another elite. Got 30.5 mpg, quite disappointed with that. I got 34 on my last lOng run. Although it'd developed a small exhaust blow in the last two weeks that suddenly got worse on this trip. I think that's the culprit, but 3.5 mpg?
Title: Re: MPG
Post by: GastronomicKleptomaniac on 21 April 2012, 12:24:10
I've had 33mpg out of a 3.0 manual on a long motorway run, including sustained blats at over 100 leptons.

 Around town kills mpg, in normal driving I get about 25 out of my 3.2 manual.
Title: Re: MPG
Post by: Brikhead on 21 April 2012, 15:28:11
I've been getting around 22.8 m.p.g. from my 2.6 manual, using 'super' unleaded. Used mainly around town apart from the trip from Kent to pick it up.
I don't drive to conserve fuel, infact I've been hammering the car around to 'test' the headgasket, also I'm in the process of clearing the 'mayo' from the oil filler tube, I'm doing it the lazy way though!

(http://i383.photobucket.com/albums/oo273/brikheadphoto/Omega%20Mv6%20Facelift/DSCF2006.jpg)
Title: Re: MPG
Post by: geoffr70 on 21 April 2012, 16:09:29
I've been getting around 22.8 m.p.g. from my 2.6 manual, using 'super' unleaded. Used mainly around town apart from the trip from Kent to pick it up.
I don't drive to conserve fuel, infact I've been hammering the car around to 'test' the headgasket, also I'm in the process of clearing the 'mayo' from the oil filler tube, I'm doing it the lazy way though!

(http://i383.photobucket.com/albums/oo273/brikheadphoto/Omega%20Mv6%20Facelift/DSCF2006.jpg)

I'm getting 25-26 round town from 3.0 manual
Title: Re: MPG
Post by: GastronomicKleptomaniac on 21 April 2012, 17:16:07
I've been getting around 22.8 m.p.g. from my 2.6 manual, using 'super' unleaded. Used mainly around town apart from the trip from Kent to pick it up.


I'm getting 25-26 round town from 3.0 manual

The woodster has confirmed before that the 2.6 has a lower ratio diff to even out the performance somewhat. Also has an effect on MPG, predictably.
Title: Re: MPG
Post by: Grrrrrr on 21 April 2012, 20:45:13
Yeah, my 2.6 auto averages about 25mpg with a heavy foot. Only ever managed 30mpg being very light indeed. Anything over 80mph on motorways and forget it.
Title: Re: MPG
Post by: Grrrrrr on 21 April 2012, 20:46:12
My old 2.5 manual on the other hand would do well over 30mpg going over 90mph, allegedly.  ;)

J
Title: Re: MPG
Post by: TheBoy on 21 April 2012, 21:57:28
I've been getting around 22.8 m.p.g. from my 2.6 manual, using 'super' unleaded. Used mainly around town apart from the trip from Kent to pick it up.
I don't drive to conserve fuel, infact I've been hammering the car around to 'test' the headgasket, also I'm in the process of clearing the 'mayo' from the oil filler tube, I'm doing it the lazy way though!

(http://i383.photobucket.com/albums/oo273/brikheadphoto/Omega%20Mv6%20Facelift/DSCF2006.jpg)
why does that look wrong? Were you lights on?
Title: Re: MPG
Post by: Brikhead on 21 April 2012, 22:05:19
I'm getting 25-26 round town from 3.0 manual

I'd guess I drive more 'uneconomically' than you then!
I blame the weather, wet roads and t.c. turned off soon gets the rev counter bouncing...
I used to get around 17.5 mpg's in my old 3.0 auto.
Title: Re: MPG
Post by: Brikhead on 21 April 2012, 22:08:09
why does that look wrong? Were you lights on?

Dunno Mate, it has been a rainy old day and I do tend to switch on my headlights at the slightest hint of bad visibility so chances are, yes...

Why? Does it look photo shopped, or maybe the screen is on it's last legs?
Title: Re: MPG
Post by: TheBoy on 21 April 2012, 22:12:07
why does that look wrong? Were you lights on?

Dunno Mate, it has been a rainy old day and I do tend to switch on my headlights at the slightest hint of bad visibility so chances are, yes...

Why? Does it look photo shopped, or maybe the screen is on it's last legs?
With lights off, is it a white background?
Title: Re: MPG
Post by: Brikhead on 21 April 2012, 22:14:35
With lights off, is it a white background?

Nah, I think the screen just dim's slightly when the headlights are switched on, never noticed any colour changing...
Title: Re: MPG
Post by: TheBoy on 21 April 2012, 22:16:58
With lights off, is it a white background?

Nah, I think the screen just dim's slightly when the headlights are switched on, never noticed any colour changing...
Thats what I thought. Whoever programmed it made a cock-up
Title: Re: MPG
Post by: Brikhead on 21 April 2012, 22:23:59
Thats what I thought. Whoever programmed it made a cock-up
Interesting, as you might know I've only just got the car but I was led to believe that it was all 100% original Vx. fitment.
Saying that though I have noticed the allen key grub screws that hold in the head unit are all scratched, I just presumed it was done by whoever installed the hardon cardon ipod thingie or the hands free kit...

Any chance you could see what my car left the factory with if I p.m. you the reg. no???
Title: Re: MPG
Post by: TheBoy on 21 April 2012, 22:37:37
Thats what I thought. Whoever programmed it made a cock-up
Interesting, as you might know I've only just got the car but I was led to believe that it was all 100% original Vx. fitment.
Saying that though I have noticed the allen key grub screws that hold in the head unit are all scratched, I just presumed it was done by whoever installed the hardon cardon ipod thingie or the hands free kit...

Any chance you could see what my car left the factory with if I p.m. you the reg. no???
Might have had cid replaced at some point ;)