Why is my Fuel Consumption high compared to others of the same car model?

I own a Chevrolet Cruze 1.8 AT LS and I regularly record my Fuel Consumption at fuelly. I noticed that my average Fuel consumption is one of the lowest at fuelly. My car is regularly maintained and has around 40,000 km. I use my car for city driving in moderate to heavy traffic. My fuel consumption averages at 6-7KM per Liter. My brother owns a Honda Civic 1.8 AT and his car averages at 8KM per liter. Can someone explain to me why there's a a huge difference in fuel consumption between the cruze and civic? Is there something I can do to improve my cars fuel consumption?

We researched the Cruze a couple of years back and purchased the 1.4 liter with a manual transmission. We have been very happy with the fuel economyand generally do better than the advertised numbers.

I suspect you bought an automatic transmission, and as I recall the 1.8 did not get the fuel economy of the 1.4. I suspect that you are comparing your results to the more efficient variants of the Cruze, which is not a good comparison.

There may be some tips on the Cruze owners forum that may be helpful to you. http://www.cruzetalk.com/forum/27-fuel-economy/

The fact that the engines are the same displacement means nothing. They are two completely different designs, with the Honda having the superior design.

Also, your driving habits make a big difference, as do the condition of your can and tire inflation.

Most of the reason you are getting lower average fuel mileage is the fact that you drive mostly in city and in "moderate to heavy traffic". Driving in stop and go city traffic will always result in lower fuel mileage than driving at a constant highway speed.