new ques about 4.8i lpg

[610kev]

hi all . i recently posted about a 4.4lpg i am now considering a 4.8i lpg all bells and whistles inc plus the added advantage of a top lpg system .would there be much diffrence in lpg mpg from the 4.4 to 4.8 .from what i can gather from info recieved the 4.4 should average about 36mpg from lpg .would the 4.8 be similar l. hope you may be able to help thanks kev

[shadrack]

i would say no difference at all, you know you only get the 36mpg eqivalent a petrol will only average 16-21mpg with abit more on a run, you get the saving from the lpg been 70-80ppl, also worth bearing in mind my old petrol lpg x5 did use abit of petrol and also the lpg isnt quite as effient as petrol around 80% i think, if i hadnt of got my diesel i would have gone for the 4.8is lpg as its the best of everything and as you say most of them are fully loaded!!

[Cannondale]

I am looking for either a V8 or Derv face lift E53 myself still not sure what to go for,
V8 and 20 Mpg or Derv and 26 Mpg

But from what I have read about LPG the V8 will do 2 to 3 Mpg less than Petrol meaning about 18, the saving is the price per litre.

Richard...

[Raj]

I'd personally go with the 4.8 lpg over the 4.4 lpg. The 4.8 will be negligible difference on fuel consumption but you tend to get better spec.

[Neil48is]

Hi,i run a 4.8 on LPG and am currently seeing 38mpg on a steady 70mph run on cruise and around 28-29mpg daily driving. As has been quoted on here lpg with a good system is typically 10-15% less efficient than petrol and also make sure you find out the size of the tank,actual fill is 20% less than max volume,my tank is 84l max therefore circa 68l. I can usually see around 230 miles on £50.

[jaynana]

[quote=""Neil48is""]Hi,i run a 4.8 on LPG and am currently seeing 38mpg on a steady 70mph run on cruise and around 28-29mpg daily driving. As has been quoted on here lpg with a good system is typically 10-15% less efficient than petrol and also make sure you find out the size of the tank,actual fill is 20% less than max volume,my tank is 84l max therefore circa 68l. I can usually see around 230 miles on £50.[/quote]

u say 38mpg on lpg and that's about 10-15% less than petrol, so you mean to say with petrol your car would have done 40+mpg?? on an E53 with 4.8l?? unlikely!

[shadrack]

[quote=""jaynana""][quote=""Neil48is""]Hi,i run a 4.8 on LPG and am currently seeing 38mpg on a steady 70mph run on cruise and around 28-29mpg daily driving. As has been quoted on here lpg with a good system is typically 10-15% less efficient than petrol and also make sure you find out the size of the tank,actual fill is 20% less than max volume,my tank is 84l max therefore circa 68l. I can usually see around 230 miles on £50.[/quote]

u say 38mpg on lpg and that's about 10-15% less than petrol, so you mean to say with petrol your car would have done 40+mpg?? on an E53 with 4.8l?? unlikely![/quote]
i think he means it would have done 20 or so but lpg is 1/2 price=double mpg

[Neil48is]

Yep thats it !