how do i work out my mpg on car?

Question

my car does abt 100miles on a £10

Answer 1

and 10 pouds will buy how much gas? 5 gals or imp gals, I would make a guess of about 20 mpg.

Answer 2

Apparently, you live in the UK. I live in the US, but the same principles apply.
My car has a trip odometer & a fuel consumption gauge, which simplifies matters. If your car doesn't have those features, do this:
1st, fill your tank to capacity. Then, make a note of the mileage on your odometer. When you refill your tank, note how many gallons it takes to fill it back up to capacity. This is your "gallons used". Note the odometer mileage again & subtract your beginning mileage. This is your "miles driven". Divide "miles driven" by "gallons used". This gives you your MPG.

Answer 3

If you want to know how many kms your car is running with
1 litre of petrol, then do the following:-
1. Fill up the tank of your car to its top at the petrol station.
2. Before you drive off, adjust your odometer to zero.
3. Then proceed with your driving on the highway for about
30 minutes.
4. Stop at any petrol station and fill up with petrol to its top
and this time record the amount of petrol used in litres.
5. Check the odometer for the kms done (the figure in the
meter divide with amount of litres used will give the kms
done in 1 litre of petrol).

Answer 4

For cars with no trip computer, the easiest way is thus :

1) Go to the petrol station, note your mileage as accurately as possible. Fill your car with petrol, to full.

2) Do your business as normal. When you need petrol, go to the petrol station. Note mileage now, as accurately as possible. Fill car up with petrol, to full.

3) Now, the second fill up amount is what you've used, (from the first full tank), and the difference in mileage you've noted is how many miles you've done on that amount.

Easy. 1 gallon = 4.54 litres.

Answer 5

Set your Odometer at the first fill up, Drive until the next fill up. Take the Liters and divide them into the number of miles. Pay attention to city and highway driving. This will give you a good overview of your mileage.

Answer 6

Petrol round here is around 96.9p per litre.
So u fill up with around 10.32 litres.
There are 4.4 litres to a gallon so that is about 2.35 gallons
100 miles divided by 2.35 gallons is about 43 miles to the gallon. Sounds pretty ok to me!

Answer 7

Well, whenever I get my car filled up, I take the number of miles accumulated on my trip meter and divide it by the amount of gallons it took to fill up. For example, I may have 194 miles and it takes 9 gallons to fill up.... so I am getting 21.5mpg. Hope this helps.

Answer 8

Get a spare portable (usually red plastic) gasolene can and fill it. At the same time fill your car's gas tank to the brim. Also it's helpful for accuracy to ensure your tires are inflated to the correct pressures.
Trip your odometer to zero. Note the capacity of your fuel tank in your owner's manual.
Run the car until it sputters out of gas. Note the odometer reading.
Do the math.
Use the spare gas tank to get you to the gas station to get more gas and away you go.

Answer 9

First get your car as clost to empty (without running out) as you can. Now go fill it up, and make note of how many gallons you purchase. Now set your trip-o-meter, now run your car (as usual) until you are just about empty again, now make note of how many miles you went on 1 full tank of gas.

Now take your miles and divide by how many gallons you purchased.

Example: u purchase 15.00 gallons and drive 350 miles
350 divided by 15.00 = 23.33 mpg

Answer 10

fill up the tank and reset the odometer and drive it till it stops then divide the capicity of the tank to the miles . then call for roadside assistance.