That depends how many mpg your vehicle does:
My company car does about 4.15 mpg (it weighs 23 Tonne fully laden with 71 passengers and their luggage and has a 12 litre engine), so the tank to do 250 miles would contain:
250 miles ÷ 4.15 mpg = 6020/83 gal
which would cost:
6020/83 gal x 4.15 per gal = 250.
(Now you know why coach/bus hire is so expensive.)
My personal car does about 50 mpg (on nice clear roads, like the autoroutes in France) which means my car's tank to do 250 miles would contain:
250 miles ÷ 50 mpg = 5 gal
which would cost:
5 gal x 4.15 per gal = 20.75
the tank will cost with every thing it is about $250
Don't, just refill tank ever 250 miles
$250-$350
250/18=13.8888888*3.5=$48.61
20 miles costs 4, therefore 4 x 250/20 = 50$
250 miles is 402.336km
250 miles = 402,336 meters.
250 miles divided by 20 miles is 12.5 gallons. 12.5 gallons times 3.10 is $38.75 in the end.
A 2 gallon tank would likely cost more than an average household tank as it is not a common size. Average house tanks are about 30 gallons and cost around $250. 2 Gallon tanks are usually used as buffers in underfloor home heating systems and can cost as much as 300.
3000 / 12 = 250 gallons.250 x 3.85 = $962.50
250$
$250