So it looks like by measuring at the pump and not via the onboard gauges, the mileage may be close to what Lexus claims. Lexus should fix the gauges if possible.
Here is the part that makes NO sense to me.
Why disengage the battery on a dead stop start when there is sufficient charge left in the battery? If the battery is almost drained, then fine, engage the engine on acceleration. If not, let the battery do most of the work unless I punch it.
To not engage the gas engine on a standing start takes a great deal of patience and is guaranteed to get horns blaring at you from behind. A normal acceleration in city traffic almost always kicks in the gas engine.
It strikes me that Lexus should make a software update available that lets one put the car in performance mode or mileage mode. Since I really have few occasions to use the 0-60 time, I'd rather have it in mileage mode.
I toyed with calling it economy mode (instead of mileage mode), but given the check I just had to write, I thought it a bit innappropriate. B)
Overall a great car! I'm just venting a bit on this mileage/battery thing.