While I'm sure that some of our resident super hypermilers have their own answers, and can give them in much greater detail, here's some tips that I've found to get good milage.
Plan your trip and your route. It sounds simple, almost remedial, but as I've been driving, I've learned that the slope of the road, the traffic flow, and other elements can play a big part in your milage. Chose routes where you won't have to vary your speed much, and you're going downhill or over level roads as much as possible.
Don't dilly dally. When you start your car, put it into motion. Don't start the engine, then load her up, go back into the house, etc. Start up the engine and get driving.
Don't be a leadfoot. Rabbit starting from a stop, and going much above 65 tend to eat away at those MPGs.
Don't try to be an electric vehicle. EV mode is great, and it'll give you great MPGs, but that's then. That energy needs to be replenished, and it's most likely going to use the ICE to do it, causing you to get some terrible MPGs later. Use it wisely, and not excessively. It's a hybrid, and that's what makes it effective, when it's in hybrid mode. Now, that's not to say don't use EV mode, quite the contrary, you want to use it, in stop and go traffic, in parking lots, coming home, but don't try to do everything in EV mode all the time.
Follow the two C's: Coasting and Cruising. Try to coast as much as possible. When you see a red light ahead, let off the pedal and coast all the way in, things like that. (Don't worry about the battery, it charges when you're really driving about, so lay off the brakes unless you need them, allow yourself to coast.) When you start off from a dead stop, use the EV to get you rolling (I generally get to 15-20
mph before the ICE comes on), and then use the hybrid drive to get you up to crusing speed; don't floor it and don't mosey, then do what you can to stay at that speed for as long as possible.
Don't be afraid to be passed by traffic. When you're coasting up to a red light, you'll probably be passed. When you're letting EV mode to get you started, you'll probably be passed. If you're on an expressway, you'll probably want to use a right lane. You'll still get there, and you'll be a lot more fuel efficient getting there.
If you have the A/N system, use it. Watch your MPGs when you're driving about, and the Energy diagram when you're in stop and go traffic to monitor your battery.
I find that if I'm in heavy, prolonged stop and go traffic, I switch gears to L (A braking mode where the electric motor recharges the battery by slowing you down; essentially EV mode in reverse) and then use EV mode as much as possible and let the slow down for the stop part of traffic to recharge the battery.
Get your oil changed. A bit of humor, but I got mine changed at 1000+ miles, and right after that, had a 2 MPG boost in my fuel economy. Before I was getting 30ish, and now I'm getting 33!
Also, if it's new, give it and yourself time to adjust. Find out for yourself what works and what doesn't. Most people report that at around 3000 miles there's an improvement, and another at around 8000 miles.
EDIT: Oh yes, and don't rush to a red light. If you know the traffic pattern, and you know that you can't hit the next light red, why bother wasting all the fuel and energy rushing up to that stop? Take your time, and save your fuel.
How to get best mileage on my Ford Escape Hybrid SUV 4x?
), you should be able to get 30+ in mostly rural-type driving, at least during warm weather (and depending on terrain). I was getting about 28, then started trying to increase my FE (Fuel Economy) by coasting more, keeping my speed down (and using downhills to build speed for the subsequent uphills) when possible, using the A/C as little as bearable, etc. Mainly, I try to keep the engine RPM at or below 2-2.5K whenever possible (I don't have the A/N system), and that seems to help. Now I am on my third consecutive tank over 32 mpg! I have VERY little true "city" (stop and go) driving, a bit of highway (65 mph, limited access - maybe 25%), and the rest is rural roads, where if traffic allows, I can keep my speed to about 40-50 and use the above techniques.
