I was surprised with the 4AC economy - not to shabby, a welcome relief with fuel hitting $1.37/litre at times.
Getting about 12km/ltr or 8.3 Litres per 100km

While on the topic of fuel. I swear that my 4AC is pinging under heavy acceleration.
All my other cars have been Turbos and I know what pinging sounds like but why would a NA engine be pinging?