If fuel consumption / avg is the main concern then manual is better
Had a really busy week and used both cars many times
With heavy foot both cars gave slightly bad average
Auto gave 9.2 km/ltr
Manual gave 11.1 kms/ltr
changed gears at 3k rpm in manual few times at 4
floored auto most of the time esp in the morning as I was getting late almost all 5 days this week and avg dropped to 9
so you can decide ..
Manual gives better avg around 2km/ltr better but burn 100 calories every time you drive it lol