On 5/16/2016 11:29 PM, Don Y wrote:
On 5/16/2016 8:10 PM, rbowman wrote:
On 05/16/2016 01:34 PM, Frank wrote:
Instantaneous readout on my new Subaru indicates I get 100 mpg going
down hill.

when I first got the ScanGauge I had it in instantaneous mode. I think
the
injectors shut off completely when you're coasting. That mode isn't
too useful
in town.

New cars play games shutting down cylinders when the power isn't
required.

Doubt this is happening on the Subaru.
I don't know how they can instantaneously measure mileage and would
think it extremely hard to do it on fuel usage.
Car also has a CVT which gives maybe an extra mpg.