Omega Owners Forum
Chat Area => General Car Chat => Topic started by: JamesV6CDX on 13 September 2009, 16:53:04
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Mixed driving...
Astra does 26 miles per gallon on gas = at 48.9p per litre this works out at 8.5p per mile
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Astra does 42 miles per gallon on petrol - at 106.9p/litre this works out at 11.6p per mile
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saving on LPG is 3.1p per mile
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Therefore
Every 300 miles, you save £9.30
Every 500 miles you save 15.50
Every 1,000 miles you save £31
Every 10,000 miles you save £310
Every 100,000 miles you save £3100
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This isn't taking into account that with LPG, things like the spark plugs need chaning 4 times as often, etc...
Worth it? You decide....
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Those are certainly interesting figures James, I'd always thought LPG offered a greater saving than that. I'd wager a 2.0 dti overall would be the same to run, or dare I say even even cheaper. How come it only achieves 26 mpg on LPG? I must admit I'm totally ignorant of information when it come to LPG.
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Thats not great at all. wonder if it is all working right :-/
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Another off-put for me with LPG is the boot space lost to the tank, and it costs around £1.5k to have converted so you need to do a lot of miles to get the money back.
Personally I steer clear.
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might as well get a V6 Omega ::) ;D
Something i may have to consider at some point, if i do get offered a perm job, i will be doing a LOT of miles. So will have to go LPG or Diesel route.
I thought you should be getting better than 26 mpg on gas, if you can get 42mpg on petrol.
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Something's not right. Are these both observed MPGs, based on the same type of driving, or out of the book?
42mpg on petrol sounds too good to be true, and 26mpg on gas is poor. My MV6 is doing 22-23 MPG on gas.
Kevin
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Something's not right. Are these both observed MPGs, based on the same type of driving, or out of the book?
42mpg on petrol sounds too good to be true, and 26mpg on gas is poor. My MV6 is doing 22-23 MPG on gas.
Kevin
That long on long runs?
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Something's not right. Are these both observed MPGs, based on the same type of driving, or out of the book?
42mpg on petrol sounds too good to be true, and 26mpg on gas is poor. My MV6 is doing 22-23 MPG on gas.
Kevin
That long on long runs?
Yes. More like 19 commuting.
Kevin
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Did not know it was that bad, so at best 44-46mpg running costs wise :-/ :(
Kinda makes a 2.2 DTi Omega a better option, as 50mpg is achievable. :-/
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Something's not right. Are these both observed MPGs, based on the same type of driving, or out of the book?
42mpg on petrol sounds too good to be true, and 26mpg on gas is poor. My MV6 is doing 22-23 MPG on gas.
Kevin
Hiya Kev,
40 to 42 mpg is based on filling up, doing a run, and filling back up - calculating the distance done and the fuel used.
Likewise with LPG - I've been sure to use the same pump - and I consistently calculate 26mpg with my usual driving on LPG (29 if more steady).
I have it in my head that it used to do about 32 on gas.
It is running a treat - I only wonder if maybe the worn ring(s) is contributing to extra consumption?
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Kevin I also get well over 40 mpg on open road with my 2.2 mig.
But that much difference with gas of only 26mpg sounds definitely somethhing is not right.
The consumption should be higher but not more than 10 to 15%
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What size engine is that?
you should be getting a hell of a lot more mpg than that mate,
At that rate you would have to drive about 500k miles without changing anything just to get your money out of it, or am I going wrong here somewhere? :-/
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Did not know it was that bad, so at best 44-46mpg running costs wise :-/ :(
Kinda makes a 2.2 DTi Omega a better option, as 50mpg is achievable. :-/
Except a 2.2 DTi doesn't quite go as well. ;)
Kevin
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Did not know it was that bad, so at best 44-46mpg running costs wise :-/ :(
Kinda makes a 2.2 DTi Omega a better option, as 50mpg is achievable. :-/
Except a 2.2 DTi doesn't quite go as well. ;)
Kevin
My 1.6 16v Astra isn't neck-snapping either, mind ::)
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Something isn't right then James... If you're getting 42mpg on Petrol then you should be getting around 33mpg at worst...
Can't guess what though but thouse Necam systems are a bit Pants anyway ::) ::)
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perhaps you should sell the Astra and fix the Omega. Same petrol consumption, but a lot more fun getting there :y
Ken
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Something isn't right then James... If you're getting 42mpg on Petrol then you should be getting around 33mpg at worst...
Can't guess what though but thouse Necam systems are a bit Pants anyway ::) ::)
Thing is mate - it would probably cost £200 to get it serviced and sorted - and I could buy a stag front end for not much more - which I can connect to, configure, and monitor... :-X ::)
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Ah but with the engine out you could convert it easily. I recently bought a 2nd hand OMVL 21N system for £140. And it came from a Mig 2.2. And the chap kept the inlet manifold for me, so I had no drilling silly holes, breaking taps etc. I haven't quite finished getting it installed yet, I have a vertical toroid but am still trying to figure out how to run the LPG pipes down and not upset LPGA regs.
As it happens, I have 2 spare LPG tanks which I will be flogging sometime soon. This could start you off.
Ken
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R
Did not know it was that bad, so at best 44-46mpg running costs wise :-/ :(
Kinda makes a 2.2 DTi Omega a better option, as 50mpg is achievable. :-/
Except a 2.2 DTi doesn't quite go as well. ;)
Kevin
True, or sound as nice. But you get full use of the boot.
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have seen a few Range Rovers this summer that are on LPG on fire lol this is the biggest off put for me!
i seen someone advertising a BMW 7 on LPG that done 250miles to a 60lit LPG tank now i know why!
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have seen a few Range Rovers this summer that are on LPG on fire lol this is the biggest off put for me!
Not sure how that could happen. :o I suppose anything's possible if you go to one of the less scrupulous LPGA cowboys registered installers.
i seen someone advertising a BMW 7 on LPG that done 250miles to a 60lit LPG tank now i know why!
60 Litres or a 60 litre tank? Bear in mind that the tank will only fill to 80%. Even in the worst case that's 19 MPG. 13p a mile at today's prices. What's not to like? Even a poverty spec 7 series would be costing well over 20p a mile on petrol.
Kevin
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My Rolls is on lpg, 11/gall local, 14.5/gall on a run, petrol it does 12 local, 16 on a run. I pay 47p/ltr lpg. I'll let you mathematicians out there work it out :y I do 7500 miles/year in it.
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Looking the picture definitely not worth..
although the consumption figures may be correct there are many factors effecting .. like the setup of LPG set,ECU parameters and the conditions of its parts , also cars engine conditions etc etc.. But looking around I see a different picture from Astra LPG users.. :-/
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James, a friend of mine runs a Astra 1.8 Estate with factory fit LPG, talking to him he gets the equivalent to about 65 to 70 Mpg on Gas (if you work it backwards cost per fill up).
Think we worked it out to about 6.5p a mile on gas and 13.5p on petrol, He doesn’t run on petrol but seems to remember petrol was about 36 MPG.
So, totally different figures there, maybe you got some unburnt gas going on, or a minor leak.
Is it Single or Multi Point?, if its Single most common issues are air leaks or worn hoses from the Air Filter onwards?
Chris.
Ps, forgot to mention I sometimes run around is a BM 318s manual with single point Lpg, that does about 7.5p on gas, and it struggles to do more than 30 mpg on petrol. :y