post your idling L/hr consumption and....

[Ecky]

Honda Insight, 1.0L ECA1, 3 cylinder
225k miles
Has A/C, no PS belt (electrical), no alternator (hybrid) but may have slight load from hybrid motor

"Idle" - 0rpm 0L/hr
Force engine on idle - 900rpm, 0.75 L/hr
2000rpm 1.51 L/hr
3000rpm 2.72L/hr

[serialk11r]

Toyota 2ZZ-GE:

Fully warmed up, 2.1g/s at the MAF with electric P/S pump on, 2.0g/s with P/S off, 775rpm

Assuming a 14:1 AFR and 710g/L (that's on the lower end of what I found) for gasoline, that's 0.72L/hour.

I would expect something fairly similar for a belt driven P/S equipped car since at idle the P/S pump uses the least power.

Toyota 1ZZ-FE was around the same at 680rpm IIRC, definitely not much below 0.7L/hour if at all. The 2ZZ's low lift cam and high compression help a lot. The gal/hour reading from a Scangauge or Torque probably assumes higher density for gasoline than I just did, as I recall the MAF reading over 2g/s at idle just like the 2ZZ.