if i put £30 of unleaded in the car last friday and on the reciept it says 27.55 L @ 108.9p, and I have done 130 miles now, how many mpg is my car doing and how many miles left with that petrol should i have left in theory?
if the needle is back to where you started when you filled the tank then ,yes it is a maths thing, and if i was a bit more mathematically minded i could have worked it out but i'm sure some people are working it out as i type
I know that is is meant to do 36mpg, I am trying to find out if there is any great difference ebetween the factory estimated MPG and the actual MPG. It's an automatic and someone on here today mentioned the extra petrol their auto was using.
You sounded a little irritated, dot, by lslowry's initial posting, but your initial question didn't actually give any indication of where the fuel gauge was before you filled up.
The litres to gallons converter is available on google and the rest is just a maths thing
I don't think you can draw any conclusions about the car's MPG rate based on such a small set of data and given the margins of error involved in judging when the needle is relative to its original position.
I'm not sure where the price/litre comes into this.