i am just wondering what the gas mileage should be?
im getting about 400km or less per tank.

 

I am getting 16 MPG with the A\C running full time. About 17.5 MPG during the cooler times of the year. I think it has a 16 gallon tank which means I fill up a lot!

 

I have a 99 4 door blazer and I get 6.5 KMs per litre or 18 mpg. (Canadian) or 16 mpg (USA) and it gets worse towing my boat !

 

Some of it will depend on the quality of the gasoline you use. If the gas contains Ethanol like ARCO does then you will have lower gas mileage since Ethanol does not combust as well as gasoline. I have personal experience with this, my girlfriend works as a cashier at an ARCO gas/mini-mart, and used there gas for a while and kept the reciepts to measure my mpg. When a local Conoco/Philips station opened and had cheaper prices I used that gasoline, with which I would get up to 20+ mpg on the highway with. But since gasoline in the US will all contain some level of Ethanol soon that will be a mute point.

Also make sure your tires are inflated properly, when I first purchased my Blazer the tire pressures were at 24psi, when I increased that to 35psi that is when I also started to get better mileage...