diff --git a/lib/types/documentArray/methods/index.js b/lib/types/documentArray/methods/index.js
index dae1baf105..04bee09916 100644
--- a/lib/types/documentArray/methods/index.js
+++ b/lib/types/documentArray/methods/index.js
@@ -2,7 +2,6 @@
 
 const ArrayMethods = require('../../array/methods');
 const Document = require('../../../document');
-const castObjectId = require('../../../cast/objectid');
 const getDiscriminatorByValue = require('../../../helpers/discriminator/getDiscriminatorByValue');
 const internalToObjectOptions = require('../../../options').internalToObjectOptions;
 const utils = require('../../../utils');
@@ -121,23 +120,39 @@ const methods = {
    *
    * @return {EmbeddedDocument|null} the subdocument or null if not found.
    * @param {ObjectId|String|Number|Buffer} id
-   * @TODO cast to the _id based on schema for proper comparison
    * @method id
    * @api public
    * @memberOf MongooseDocumentArray
    */
 
   id(id) {
-    let casted;
-    let sid;
-    let _id;
+    if (id == null) {
+      return null;
+    }
+
+    const schemaType = this[arraySchemaSymbol];
+    let idSchemaType = null;
+
+    if (schemaType && schemaType.schema) {
+      idSchemaType = schemaType.schema.path('_id');
+    } else if (schemaType && schemaType.casterConstructor && schemaType.casterConstructor.schema) {
+      idSchemaType = schemaType.casterConstructor.schema.path('_id');
+    } else if (this.length > 0 && this[0] != null && this[0].$__schema) {
+      idSchemaType = this[0].$__schema.path('_id');
+    }
 
-    try {
-      casted = castObjectId(id).toString();
-    } catch (e) {
-      casted = null;
+    let castedId = id;
+    if (idSchemaType) {
+      try {
+        castedId = idSchemaType.cast(id);
+      } catch (e) {
+        castedId = null;
+      }
     }
 
+    let sid;
+    let _id;
+
     for (const val of this) {
       if (!val) {
         continue;
@@ -152,11 +167,17 @@ const methods = {
         if (sid == _id._id) {
           return val;
         }
-      } else if (!isBsonType(id, 'ObjectId') && !isBsonType(_id, 'ObjectId')) {
-        if (id == _id || utils.deepEqual(id, _id)) {
+      } else if (castedId != null && !isBsonType(castedId, 'ObjectId') && !isBsonType(_id, 'ObjectId')) {
+        if (castedId == _id || utils.deepEqual(castedId, _id)) {
           return val;
         }
-      } else if (casted == _id) {
+      } else if (castedId != null && isBsonType(castedId, 'ObjectId') && isBsonType(_id, 'ObjectId')) {
+        if (castedId.toString() === _id.toString()) {
+          return val;
+        }
+      } else if (castedId != null && castedId == _id) {
+        return val;
+      } else if (castedId == null && (id == _id || utils.deepEqual(id, _id))) {
         return val;
       }
     }