diff --git a/src/autoreplace_cmd.cpp b/src/autoreplace_cmd.cpp
--- a/src/autoreplace_cmd.cpp
+++ b/src/autoreplace_cmd.cpp
@@ -614,6 +614,7 @@ static CommandCost ReplaceChain(Vehicle 
 				/* Success ! */
 				if ((flags & DC_EXEC) != 0 && new_head != old_head) {
 					*chain = new_head;
+					AI::NewEvent(old_head->owner, new ScriptEventVehicleAutoReplaced(old_head->index, new_head->index));
 				}
 
 				/* Transfer cargo of old vehicles and sell them */
@@ -631,10 +632,7 @@ static CommandCost ReplaceChain(Vehicle 
 					cost.AddCost(DoCommand(0, w->index, 0, flags | DC_AUTOREPLACE, GetCmdSellVeh(w)));
 					if ((flags & DC_EXEC) != 0) {
 						old_vehs[i] = nullptr;
-						if (i == 0) {
-							AI::NewEvent(old_head->owner, new ScriptEventVehicleAutoReplaced(old_head->index, new_head->index));
-							old_head = nullptr;
-						}
+						if (i == 0) old_head = nullptr;
 					}
 				}