My AWD KL wants to return +550 on the city cycle - with AC on, and not driving for economy either.
On the odd occasion I try to drive for economy, it seems to perform even better.

Get it out on the highway for a 100% highway spin - and it has dropped below the 10L/100... and past the9L/100 KM markers as well Best has been a 8.6L/100 actual - on a round trip to Airlie, including some overtaking etc.

Only engine mods - K&N Flat panel, NZ Cai, HM headers, 200cpi cat and VRX rear muffler - and recently the SKR tune for 98Ron.
oh and the 19s - but they have been on there for 2ish years now
Considering its an AWD tank driving through an auto - those are figures that are not bad at all!

Service history plays a big part - is it overdue for an oil and oil filter change, does the trans need flushing (Auto) is the air filter blocked / gunked up, are the plugs clean etc etc - it all adds up to fuel saving in your pocked!