Is 50 mpg at 65mph normal?

No they don't.

The odometer is essentially always off because it depends on tire size which itself depends on temperature, inflation pressure, tread remaining and which tires you bought. One of my cars is 5.8% high.

Gas pumps have a specification to be within. Different states are different, but it's usually between 1.5% and 3%. When they are tested off, they are just tagged out until repair.

 

Every measurement has tolerances. Brand new spec'd tires will read a little low, down to the wear bars they'll read a little high. The differences are trivial and unavoidable.

Same with gas: no pump is going to be deadly accurate. Some customers will get a bit more, or a bit less. But the pumps are checked and sealed. If the inspectors find consistant and significant error in favour of the station, they can nail them.

 

the only reason i see the gas pump as truth: the money i pay for it is as true as it gets. if it's too many gallons, i have no control.
otoh, the odo is free, and i am free to contradict it.
actual mpg's are really not that important.

 

but isn't that still hv mpg's with the engine on only?

 

The mpg's that's recorded by the trip monitor is the combined EV/HV mpg

 

In other words: the total distance on that trip meter, travelled divided by the gallons of gas consumed? Regardless of the shenanigans?

 

again, the problem; is hv % with the engine on or off? it doesn't mean anything that they call it hv. hv should be engine with battery. otherwise, h = hybrid is a misnomer.

 

Nice readings.