G'day ice186, My wife and I swapped cars 3 months ago, and here's what I observed. BTW I have a '04 BA XR6T 4sp auto stock. Myself - half the time cruising on freeway at 100 kmh, half the time stuck in stop-start traffic. Occasionally give it some stick, when I get the opportunity, but kept within speed limit. Result a fairly consistant 14 l/100km. Wife - No freeway cruising, mostly short local trips, more extended idle time. Almost never pushes it (but loves it when she does). Result varies 16 to 19 l/100km. In my observation it seems that the T is extremely sensitive to driving style and that range can vary greatly. Last summer when I drove from Melbourne to Apollo Bay twice, it returned 11 l/100km overall. Interestingly I filled up before leaving, and along the long flat straight of Princes Fwy btw Melb and Geelong, its average dropped to 8.8. But as soon as I encountered stops through Geelong, it rose up to 12, before settling down to 11 for the remainder of the trip. Also I noted no improvement in consumption whenever I've used 98 Octane, apart from a bit more grunt, so I've always stuck with 95 oct since. My 4sp auto revs at 2,200 at 110 kmh, not much different to your 5sp man. However your new 6sp auto I would expect should have a taller 6th gear than this. Also its reasonable to expect that the newer the model, the less they guzzle. The FG is supposed to be better still.