Yes it's spinning the engine, RPM remain about 1100, but you can't feel the drag, it feels like a neutral coast does in other cars. It has Variable Valve timing on both cams so it's gotta be closing all the valves up when it does that, killing the pumping loss. Well, in the city I'm not getting to use the full coast down from 30-15mph distance anyway. But I'm thinking at idle it would be sucking about 3l/100. I believe it has lockup as long as you are coasting, so you don't go wasting it in the torque converter, so going out of drive and back in again, you'd be a couple of seconds before it locked up again probably, if you needed to give it another push. Need to look up whether it runs the transmission lube pump in neutral, if it does, no worries, if it doesn't, don't neutral coast.