Okay so I just want to know if this is normal is normal. I average about 15-16 mpg in the city which I understand is normal for an X but on the highway my mileage seems to decrease, once as low as 13 mpg. I realize there are tons of factors that need to be accounted for. City driving I am alone, on highway driving the X is usually loaded with luggage a family pet and 1 passenger. Could that extra load and my speed account for the dramatic drop in MPG. The same load in my wife's Altima still increases her MPG by at least 7-8 simply by avoiding the stop and go.

Not complaining just wondering if this is normal.

Thanks.