Some of the comments here are
Some of the comments here are nonsense -- namely the ones using gallons of gas to calculate MPGe; they refer to miles driven per gallon of gas used, without saying how much they recharge. MPGe is measure of how far you go per Kwh - without using gas. If you go 2.97 miles per kWh, then your mileage is 100 MPGe. If you get 2.79 miles/kwh, you're getting the advertised 94MPGe; people who drive <40 miles per trip and always recharge between, that is, never use gas, can measure this. Conversely, if you never charge your car (or if you take a real long trip without charging), then you can only measure your MPG which should be around the advertised 38MPG. When you've used both electric and gas (like most people), its impossible to calculate either MPG or MPGe. Best you can do is take the kWh and gallons of gas used, multiply by 2.79 and 38, add together, to get the number of miles toyota says you should get -- to compare your miles to.
At least the sensible comments here look positive, they're not so positive at kbb.com