Pleased with the economy
 

So, Saturday morning set off to that there London for a weekend of fun with the family.
Filled the LPG tank and off we went.
On Sunday took a detour home via Watford to visit the Harry Potter Studio Tour then after 3 hours headed home - filled the tank again
Today I then drove from my home to Manchester and had to fill up.

So covered 460 miles on just over £80 of juice. By my calcs gives me an equivalent of around 44 mpg.

Fan-bloody-tastic+++

Good news +++ 80 sounds like diesel.... but with out the sound of diesel

Tell me about it ++++++

Does the car run okay on LPG? I've heard LPG is suited more to V8's than some other cars.

I had LPG installed on one of my old Saab 9-5's. Economy was 26mpg on LPG compared to 30mpg on unleaded - can't remember what this saving converted to at the time based on cost of LPG to cost of unleaded. I saved nothing over all with my LPG - cost me a fortune in problems. LPG system cost me £1880 - sold the car for less than that a few months later. :-(

Bought it with the setup already installed.
Only had it for around 2 months but well worth it for the savings.
Not really noticed much difference in economy whether running on lpg or not but when paying 70 pence a litre compared to 136 pence litre the cost saving is obvious.

+++

Hmm, sorry to rain on your parade, but not sure about the maths here.

At 70p per litre for LPG and around 1 litre equal to 0.22 gallons, the actual economy on LPG is a little over 18mpg. At £1.36 per litre for petrol, the 'cost equivalent' is closer to 35mpg.

Still good, but but a little less than you calculated.

Can someone check my maths too - I have a history of daft obsevations on this forum! :o

Fair enough but that £80 was made up of 2 fill ups.
One at 69p a litre and one at 74 a litre.
My new calculator gives me around 36 mpg:rolleyes:

Still happy with that :D

Yep, I'd be happy with that too! :)

It's an interesting base-line to work out whether it's worth fitting LPG. I know my mileage per annum, so I'm off to do the sums.....

I have a good size of tank in the boot of my S8 and get the following out of one fill of gas. I'm also very happy with the results !


2002 Audi S8 BRC Gas conversion

416 miles to the tank of gas

It cost me £75.07 for the fill off 97 litres

97 litres = 21.3 gal

So 416 miles divided by 21.3 gal = 19.5 mpg on lpg

£75.07 divided by 416 miles = 18p / mile to run

Financial equivalent £1.38 (petrol / litre) divided by £0.769 (lpg / litre) x 19.5mpg (on lpg) = The equivalent of 35 mpg




Same car on petrol

350 miles to the tank

It cost me £110 for the fill off 80 litres (I think it was 80 anyway)

80 litres = 17.5 gal

So 350 miles divided by 17.5 gal = 20 mpg on petrol

£110 divided by 350 miles = 31p / mile to run


http://img.photobucket.com/albums/10...8/DSCN2275.jpg

Lpg mmm cheap luxury wafting +++