A few basic tips.
Don't idle the car to warm it up! Drive it as it warms up, avoiding hard acceleration.
Use your ECO button. Note: Defrost, or temps set to MIN or MAX disable ECO.
Don't obsess over starting or running in EV mode. EV mode is a useful tool to help your mileage, but learn when to use it and when not to bother. Unless you are poking around a parking lot or crawling in stop and go traffic, it is better to use the ICE to accelerate.
Accelerate at a modest (aka normal) rate for best mileage. Crawling slowly up to speed is almost as bad as jackrabbit starts on your mileage.
Accelerate slightly faster than your target speed, then back off the gas to gently reach and maintain your desired speed.
Speeds between 36 - 41
mph frequently will stop the ICE when you coast for more than a few seconds. This is very helpful when slowing or stopping is anticipated. I often feather the gas and drive/coast up to red lights or slow for traffic, saving gas in EV mode.
Drive with the load. Bleed off a few
mph as you crest a hill, and gain a few as you approach the bottom of a hill.
Avoid crusing at speeds between 40 and 45
mph - mileage suffers in that range.
Avoid freeway speeds over 70mph. I get around 44 to 45mpg between 60 and 65
mph with the A/C off. A/C on (with ECO) is around 42 to 43mpg.