Mine recently started doing this too. Level ground, slope, night, day, adult, child - it's fairly regular. Frustrating, and we've locked the car and walked away several times only to discover the door opened on it's own just after we turned away.
Do you have any other problems? Silly question to ask for this car perhaps
I just ask because while frustrating, unless you have significant other issues - tranny, steering, power, etc - a lemon law case isn't likely to go anywhere just on the door alone.
Do you have any other problems? Silly question to ask for this car perhaps