how to calculate fuel usage

Have a look here .... Site Link

thanks shaker good site but how do work it out on paper???

If you know the use in litres per 100km divide 100 by the same figure will give you km's per litre. e.g use is 14.5 per 100km's then distance is 100 / 14.5 = 6.89

Distance travelled (use trip meter)x litres used, simple.

G'day Haysie,

To work out km/litre (which is what I work in rather than l/100km) all you do is get your distance travelled figure (kilometres) and divide it by the litres used (litres).

eg. if you travelled 705 km and you used 94 litres you would divide 705 by 94 which would give you 7.5 km per litre.

For those that still "think" in miles per gallon you just multiply the km/l by 2.82.

Cheers
Stephen J.

Can anyone tell me how to convert these newfangled kays per litre to a more meaningful number like bushells per fathom please? Bugger these new units - they've only been around for 30 years!!

Grumpy

Hi hassie222(SA),
Go to Google type in fuel consumption chart hit go when it comes up with site to look at click onto Caravan & Camping South Aust > Fuel Consumption.

to convert ltrs to gallons divide the ltrs x 4.55 = gals.
to convert klms to miles divide the klms x8 and then multiply that number by 5 = miles.

Don't worry I still like to convert it back to mls per gallon.

Regards Smithy51

Hang ON!!

Don't you lose some efficiency when converting from one format to another?

:p

km/l = distance travelled/fuel used ie 700km/70l = 10km/l

By the way if you are looking at the CSR you will need to depreciate the economy. For example in my truck I usually get about 11 l/100 km around town. On the highway and loaded it is about 13 - 15 l/100 km and on firm sand 17 -19 l/100km. In a previous vehicle have used 70l to do 91 km ie 76 l/100km. If you look under trip planning you can see the huge variance in fuel consumption for the CSR for the same type of vehicle. Don't cut it close as if the going is difficult other travellers may not have fuel to spare either.

Steve