What is the fuel consumption of the Tianyu 1.8 automatic?

Why is my manual transmission fuel consumption 9-10 liters? How can I fix it?

My 8.8

09 model, 1.8 automatic, 7.5 without A/C, because the A/C is broken and hasn't been fixed.

Automatic, around 9 liters.

1.8 manual shows 7.1 with AC on, 6.9 without AC. Wife drives at 6.8.