This is mostly about my new personal best, but I think
many of you will find this interesting.

I have a ScanGauge and some other instrumentation that
helps me monitor what's going on, but otherwise, my
FEH is stock.

I have a 2005 FWD with Nav
I have all tires at 45psi
I have roof cross bars removed
I drive with only myself in the car and a few books
and tools.

I recenty found out 70'F is too hot for optimum FE.
The battery heats up and turns on the A/C.
If it's too cold, the engine runs more to keep
everything hot. So where is "optimum"??? Think I'm
darn close to finding it.

Start of trip 55'F outside.
End of trip 54'F outside.
Start of trip with FEH engine at 145'F
End of trip with FEH engine at 170'F
Elevation 4700ft +/- 50 feet.
Net elevation change: zero ( complete round trip )
Fuel tank 3/4 full.
Night time, headlamps on, radio on, 1 window open.

The ScanGauge records useful info.
This is all one trip:

I had 75.5 MPG at 11.9 miles of a 20.2 mile round
trip.
This was the peak. I did so much charging and
dis-charging, that even with 55 degrees outside, the
battery warmed up and kicked on the A/C at this point.

With intermittant A/C after this, I had 72.5 MPG at
18.0 miles of my trip, and 68.3 MPG at the end of my
20.2 mile trip. I had one case of ICE running at a
stoplight due to A/C running.

Min. Battery temp (at start) was 68'F, max. was 90'F.
Min. engine coolent temp was 145'F. max. was 181'F.
Ave. speed was 17 MPH, max. was 39 MPH.
Max. RPM was 2824. Round trip took 1.1 hours.

As you can imagine, this was all stop and go city
conditions, with about 5-6 miles of back roads.
It was 10pm to 11:10pm and traffic was light.

So how do you get 70+ MPG in a FEH?

Mostly "Pulse & Glide" with L gear when the engine is
running, D or N when the engine is not running.

I would use EV to get zero to 20 MPH.
( D or L does not matter )

I would use the gas engine to go from 20 MPH to 40
MPH.
( Have car in L gear by 40 MPH ) aka "pulse"

Release go pedal = rapid drop of RPM, and soon after
EV mode. COAST AS MUCH AS POSSIBLE NOW! aka "glide".

You can coast in any gear, using your right foot to
keep zero arrows on the energy display. If you don't
have Nav, then shifting to "N" is your best bet.

Repeat.

Gary G also likes to "Fake Shift". That is, release
the go pedal to drop RPMs, then bring them back up
slowly, to set the eCVT to a higher virtual gear. (
like "overdrive" ) This is helpful at speeds over 40
MPH... even at highway speeds, but I really didn't do
that at all during my most recent trip around town,
and well, I think the results were awesome.

I would like to think I could keep 75 MPG around town
for indefinate periods of time, but due to rapid
battery heating, this appears to be unrealistic.
In warmer than 55 degree weather, the A/C comes on
sooner. In colder than 55 degree weather, the ICE
comes on sooner!

So I guess, so far, the most "idealistic" condition
I've found for fuel economy is, outside air of 55
degrees, speeds under 40 MPH, and about 12 mile trips!

I'm fortunate my commute to work is 9 miles each way,
on roads with 35-45 speed limits, and morning temps
are often about 55 degrees in spring and fall! :-)

Cheers, good luck, and happy motoring!

-John