@@ -101,9 +101,9 @@ def __init__(
             to their host Figure on init.  Other Axes class do not
             do this.
 
-            This behavior is deprecated in 3.4, the default will
-            change to False in 3.5.  The keyword will be undocumented
-            and a non-False value will be an error in 3.6.
+            This behavior is deprecated in 3.4, the default is
+            changed to False in 3.6.  The keyword will be undocumented
+            and a non-False value will be an error in 3.7.
         focal_length : float, default: None
             For a projection type of 'persp', the focal length of the virtual
             camera. Must be > 0. If None, defaults to 1.
@@ -142,7 +142,7 @@ def __init__(
             self._shared_axes["z"].join(self, sharez)
             self._adjustable = 'datalim'
 
-        auto_add_to_figure = kwargs.pop('auto_add_to_figure', True)
+        auto_add_to_figure = kwargs.pop('auto_add_to_figure', False)
 
         super().__init__(
             fig, rect, frameon=True, box_aspect=box_aspect, *args, **kwargs
@@ -178,12 +178,12 @@ def __init__(
 
         if auto_add_to_figure:
             _api.warn_deprecated(
-                "3.4", removal="3.6", message="Axes3D(fig) adding itself "
+                "3.4", removal="3.7", message="Axes3D(fig) adding itself "
                 "to the figure is deprecated since %(since)s. "
                 "Pass the keyword argument auto_add_to_figure=False "
                 "and use fig.add_axes(ax) to suppress this warning. "
                 "The default value of auto_add_to_figure will change to "
-                "False in mpl3.5 and True values will "
+                "False in mpl3.6 and True values will "
                 "no longer work %(removal)s.  This is consistent with "
                 "other Axes classes.")
             fig.add_axes(self)