Working out miles per litre of petrol

Joe_Horner

Iceweasel wrote: »

No, No - that can't be correct - we are the ones who are on the wrong side of the road - we must be - as the rest of Europe use the 'right' side. :rotfl:

Right doesn't work by consensus - that'd be like saying that good and evil are subjective

eta: anyway, the clue's in the cars - ours are RIGHT hand drive

londonTiger

andrewf75 wrote: »

it uses the units that we use in everyday life
mpg is not practical because we don't use gallons
l/100km is not practical because we don't use km

miles per litre would be logical

Except our cars use miles and everyone measures Road travel in miles

andrewf75

londonTiger wrote: »

Except our cars use miles and everyone measures Road travel in miles

er...read my post again! thats what I said

Iceweasel

londonTiger wrote: »

Except our cars use miles and everyone measures Road travel in miles

And therein lies the problem.

Schools stopped teaching in Imperial units back in 1970.

I know that for a fact (as far as Scotland was concerned) as I started teaching in 1970 and never ever used miles, gallons, or pounds in any mathematical or technical calculations.

NeededToChooseAUsername

Assuming 50 MPG

50 miles = 1 gallon

1 gallon = 4.54609 litres

Price per litre = 1.319

1.319 x 4.54609 = 5.99629271

50 miles / 5.99629271 = 0.1199258542 pence per mile

or

50 (mpg) / 4.54609 = 10.998462414954389376365184147256 miles per litre @ 1.319

Adjust accrordingly.

Iceweasel

NeededToChooseAUsername wrote: »

Assuming 50 MPG

50 miles = 1 gallon

1 gallon = 4.54609 litres

Price per litre = 1.319

1.319 x 4.54609 = 5.99629271

50 miles / 5.99629271 = 0.1199258542 pence per mile

Adjust accrordingly.

or even express it as 5.6l/100km

How many Brits are confident of really understanding whether that is good or bad?

NeededToChooseAUsername

Iceweasel wrote: »

or even express it as 5.6l/100km

How many Brits are confident of really understanding whether that is good or bad?

Not me, i'll stick with gallons thanks. 4.54609 is a handy number to remember though, specially for tightwads like me.

londonTiger

mpg is useful because we only really use this metric to compare fuel efficiency between cars, we don't really need to know how much a gallon is. What we just need to know is that a landrover is x mpg and a volvo estate is y mpg therefore volvo is better becasue it has higher mpg and more efficient.

It's not like we have to visualise how many coke bottles are required to hold a gallon and also visualise how long 30 miles are if we were to stand on top of a small mountain looking over the horizon in order to understand the concept.

photome

NeededToChooseAUsername wrote: »

Not me, i'll stick with gallons thanks. 4.54609 is a handy number to remember though, specially for tightwads like me.

although 4.5 is much easier to remember, which is the figure I use

AdrianC

Iceweasel wrote: »

Schools stopped teaching in Imperial units back in 1970.

No, they didn't. Look back up the thread a bit.

Iceweasel wrote: »

or even express it as 5.6l/100km

How many Brits are confident of really understanding whether that is good or bad?

<waves> But I do acknowledge that, having used LHD/km speedo cars for many years in the UK, that I'm not exactly average in this respect.