diff --git a/admin/tool/behat/cli/run.php b/admin/tool/behat/cli/run.php
index 6e196598ff3..6808ebdf09a 100644
--- a/admin/tool/behat/cli/run.php
+++ b/admin/tool/behat/cli/run.php
@@ -120,8 +120,8 @@ $tags = '';
 
 if ($options['profile']) {
     $profile = $options['profile'];
-    if (!isset($CFG->behat_config[$profile])) {
-        echo "Invalid profile passed: " . $profile;
+    if (!isset($CFG->behat_config[$profile]) && !isset($CFG->behat_profiles[$profile])) {
+        echo "Invalid profile passed: " . $profile . PHP_EOL;
         exit(1);
     }
     $extraopts[] = '--profile="' . $profile . '"';
diff --git a/admin/tool/behat/cli/util_single_run.php b/admin/tool/behat/cli/util_single_run.php
index d523569375f..19917072233 100644
--- a/admin/tool/behat/cli/util_single_run.php
+++ b/admin/tool/behat/cli/util_single_run.php
@@ -173,6 +173,11 @@ if ($options['install']) {
 
     // This is only displayed once for parallel install.
     if (empty($options['run'])) {
+        // Notify user that 2.5 profile has been converted to 3.5.
+        if (behat_config_manager::$autoprofileconversion) {
+            mtrace("2.5 behat profile detected, automatically converted to current 3.x format");
+        }
+
         $runtestscommand = behat_command::get_behat_command(true, !empty($options['run']));
 
         $runtestscommand .= ' --config ' . behat_config_manager::get_behat_cli_config_filepath();
diff --git a/config-dist.php b/config-dist.php
index bb1bc60562c..cdf3de959cf 100644
--- a/config-dist.php
+++ b/config-dist.php
@@ -673,15 +673,6 @@ $CFG->admin = 'admin';
 // params hierarchy. More info: http://docs.behat.org/guides/7.config.html
 // Example:
 //   $CFG->behat_config = array(
-//       'default' => array(
-//           'formatter' => array(
-//               'name' => 'pretty',
-//               'parameters' => array(
-//                   'decorated' => true,
-//                   'verbose' => false
-//               )
-//           )
-//       ),
 //       'Mac-Firefox' => array(
 //           'suites' => array (
 //               'default' => array(
@@ -716,6 +707,20 @@ $CFG->admin = 'admin';
 //           )
 //       )
 //   );
+// You can also use the following config to override default Moodle configuration for Behat.
+// This config is limited to default suite and will be supported in later versions.
+// It will have precedence over $CFG->behat_config.
+// $CFG->behat_profiles = array(
+//     'phantomjs' => array(
+//         'browser' => 'phantomjs',
+//         'tags' => '~@_file_upload&&~@_alert&&~@_bug_phantomjs',
+//         'wd_host' => 'http://127.0.0.1:4443/wd/hub',
+//         'capabilities' => array(
+//             'platform' => 'Linux',
+//             'version' => 2.1
+//         )
+//     ),
+// );
 //
 // You can force the browser session (not user's sessions) to restart after N seconds. This could
 // be useful if you are using a cloud-based service with time restrictions in the browser side.
diff --git a/lib/behat/classes/behat_config_manager.php b/lib/behat/classes/behat_config_manager.php
index a0e2c886024..54049f5aeb2 100644
--- a/lib/behat/classes/behat_config_manager.php
+++ b/lib/behat/classes/behat_config_manager.php
@@ -42,6 +42,11 @@ require_once(__DIR__ . '/../../testing/classes/tests_finder.php');
  */
 class behat_config_manager {
 
+    /**
+     * @var bool Keep track of the automatic profile conversion. So we can notify user.
+     */
+    public static $autoprofileconversion = false;
+
     /**
      * Updates a config file
      *
@@ -429,12 +434,128 @@ class behat_config_manager {
 
         // In case user defined overrides respect them over our default ones.
         if (!empty($CFG->behat_config)) {
-            $config = self::merge_config($config, $CFG->behat_config);
+            foreach ($CFG->behat_config as $profile => $values) {
+                $config = self::merge_config($config, self::merge_behat_config($profile, $values));
+            }
+        }
+        // Check for Moodle custom ones.
+        if (!empty($CFG->behat_profiles) && is_array($CFG->behat_profiles)) {
+            foreach ($CFG->behat_profiles as $profile => $values) {
+                $config = self::merge_config($config, self::get_behat_profile($profile, $values));
+            }
         }
 
         return Symfony\Component\Yaml\Yaml::dump($config, 10, 2);
     }
 
+    /**
+     * Parse $CFG->behat_config and return the array with required config structure for behat.yml
+     *
+     * @param string $profile profile name
+     * @param array $values values for profile
+     * @return array
+     */
+    protected static function merge_behat_config($profile, $values) {
+        // Only add profile which are compatible with Behat 3.x
+        // Just check if any of Bheat 2.5 config is set. Not checking for 3.x as it might have some other configs
+        // Like : rerun_cache etc.
+        if (!isset($values['filters']['tags']) && !isset($values['extensions']['Behat\MinkExtension\Extension'])) {
+            return array($profile => $values);
+        }
+
+        // Parse 2.5 format and get related values.
+        $oldconfigvalues = array();
+        if (isset($values['extensions']['Behat\MinkExtension\Extension'])) {
+            $extensionvalues = $values['extensions']['Behat\MinkExtension\Extension'];
+            if (isset($extensionvalues['selenium2']['browser'])) {
+                $oldconfigvalues['browser'] = $extensionvalues['selenium2']['browser'];
+            }
+            if (isset($extensionvalues['selenium2']['wd_host'])) {
+                $oldconfigvalues['wd_host'] = $extensionvalues['selenium2']['wd_host'];
+            }
+            if (isset($extensionvalues['capabilities'])) {
+                $oldconfigvalues['capabilities'] = $extensionvalues['capabilities'];
+            }
+        }
+
+        if (isset($values['filters']['tags'])) {
+            $oldconfigvalues['tags'] = $values['filters']['tags'];
+        }
+
+        if (!empty($oldconfigvalues)) {
+            self::$autoprofileconversion = true;
+            return self::get_behat_profile($profile, $oldconfigvalues);
+        }
+
+        // If nothing set above then return empty array.
+        return array();
+    }
+
+    /**
+     * Parse $CFG->behat_profile and return the array with required config structure for behat.yml.
+     *
+     * $CFG->behat_profiles = array(
+     *     'profile' = array(
+     *         'browser' => 'firefox',
+     *         'tags' => '@javascript',
+     *         'wd_host' => 'http://127.0.0.1:4444/wd/hub',
+     *         'capabilities' => array(
+     *             'platform' => 'Linux',
+     *             'version' => 44
+     *         )
+     *     )
+     * );
+     *
+     * @param string $profile profile name
+     * @param array $values values for profile.
+     * @return array
+     */
+    protected static function get_behat_profile($profile, $values) {
+        // Values should be an array.
+        if (!is_array($values)) {
+            return array();
+        }
+
+        // Check suite values.
+        $behatprofilesuites = array();
+        // Fill tags information.
+        if (isset($values['tags'])) {
+            $behatprofilesuites = array(
+                'suites' => array(
+                    'default' => array(
+                        'filters' => array(
+                            'tags' => $values['tags'],
+                        )
+                    )
+                )
+            );
+        }
+
+        // Selenium2 config values.
+        $behatprofileextension = array();
+        $seleniumconfig = array();
+        if (isset($values['browser'])) {
+            $seleniumconfig['browser'] = $values['browser'];
+        }
+        if (isset($values['wd_host'])) {
+            $seleniumconfig['wd_host'] = $values['wd_host'];
+        }
+        if (isset($values['capabilities'])) {
+            $seleniumconfig['capabilities'] = $values['capabilities'];
+        }
+        if (!empty($seleniumconfig)) {
+            $behatprofileextension = array(
+                'extensions' => array(
+                    'Behat\MinkExtension' => array(
+                        'selenium2' => $seleniumconfig,
+                    )
+                )
+            );
+        }
+
+        return array($profile => array_merge($behatprofilesuites, $behatprofileextension));
+    }
+
     /**
      * Attempt to split feature list into fairish buckets using timing information, if available.
      * Simply add each one to lightest buckets until all files allocated.