Tpaz,
Don't feel bad, mine were not to great to start with either. Things to remember.
1) There are 4 "stages" to how this car works. Stage 1: the engine will run all of the time. This occurs when the engine is cold and is trying to get up to operating temperature. Stage 2: Engine is almost warmed up and will autostop at a redlight after 3 seconds or so (just barely better than stage 1).
Stage 3: Engine completely warmed up and will enter EV mode between the speeds of (roughly) 35 and 40
mph. Once you have this situation, if you come to a complete stop, the car will auto stop after 7 seconds. Congrats, you are now in "stage 4". The car will freely enter EV anytime you back off of the gas just a little on flat or downhill roads as long as your speed is less than 40
mph.
The car will run above 40
mph (mine will hit 43) before the ice engine is cranked to prevent an overspeed on MG1. Anything under your limit speed will allow the car to run on the battery until the ICE is cranked to re-charge it (or you hit the "go" pedal and force an ICE engine start).
2) Slow down and try to run the limit or just under when you can (as noted above).
3) Inflate your tires as noted above (see Bob's post above).
4) Keep trying. Ask questions. Read some of the past posts on the Camry forum.
5) People have been able to go 700 miles with their TCH so I know you can do better than 700 km after a period of time.
6) Cold weather will kill your mileage. It kills a normal cars mileage also but people don't tend to look at them as close as their new hybrid.....