Since it is set up as a 15 gal tank on stock wheels EPA said 15 city 19 hwy all in mpg. So since Km are .6 of a mile you should be getting
15 mpg = 24 kmpg
19 mpg = 30 kmpg
So with 14 usable gallons in the fuel tank stock you should expect 360 KM city and 420 hwy.
There is a mod you can do to the tank I believe on the 92 to get the full capacity of the tank to 20 gallons just have to search for the thread.
How is that
89 2.5 TBI, 4" RC lift, 1" Booms, SYE, Adams Driveshafts front and rear, Ford 8.8 with 4:88s, BFG 33X12.50X15, and a ton of other stuff.
AF Jeep Club Tail Number 184