Arduino Autonmous car if statements (ultrasonic)

I have run into a problem while creating the if statements for the autonomous car. The car skips most of the if statements and immeaditly goes to the else statement. The sensors give of the right values. Is it because i use "else if" statements or something else? The car is supposed to react to its surroundings, so i had to give it many if statements as possible. But instead it just does the last bit where it goes backwards waits goes backwards left and backwards right. So my question is do i have to add more if statements so it reacts better to its surroundings or is there more to it? Here is the code of the if statements:

  if (sensors[0] >= 50 ) { //if the distance of the front sensor is greater than 50cm, than set Fwd true. Otherwise its false.
    Fwd = true;
  } else {
    Fwd = false;
  }
  delay(50);
  if ((Fwd == true) && (sensors[1] > 50) && (sensors[2] > 50)) {
    fwd();
  } else if ((Fwd == true) && (sensors[1] < 50)) {
    fwdRight();
  } else if ((Fwd == true) && (sensors[2] < 50)) {
    fwdLeft();
  } else if ((Fwd == false) && (sensors[1] < 50) && (sensors[2] < 50)) {
    Stp();
  } else if ((Fwd == false) && (sensors[1] < 50)) {
    bwdRight();
  } else if ((Fwd == false) && sensors[2] < 50) {
    bwdRight();
  } else {
    Stp();
    delay(1000);
    bwd();
    delay(500);
    bwdLeft();
    delay(500);
    bwdRight();
  }