I get 16-17L per 100ks with awful traffic crawling 30kmh average speed...
Bumper to bumber crawl 80% of the time
Your getting better milage than my Motorsport which gets between 17-18 ltrs/100ks within 60 -80 khh zones in light metro traffic. I think average speed is showing at 35 kph which indicates the start stop nature of outer metro driving. Without a doubt she likes to take a drink when taking off at lights... something that GM's hybrid electric auto could have help reduce but it'd be too much $$$ for an end of line model
that's even more the case considering Holden went cheap and dropped the dual tone horns and a few other things
Even driving like a grandpa, with crazy gentle takeoffs where everyone passes me before i get across the intersection, she still drinks 15-16 ltrs/100kms.... so i drive normally
But she's great on long steep downhill runs
As is, not being a daily, and with the little k's I do, consumption is not an issue