diff --git a/productcomments.php b/productcomments.php
index 851d063..33c1a65 100644
--- a/productcomments.php
+++ b/productcomments.php
@@ -974,8 +974,24 @@ private function renderProductCommentsList($product)
         $commentRepository = $this->get('product_comment_repository');
         $averageGrade = $commentRepository->getAverageGrade($product->id, (bool) Configuration::get('PRODUCT_COMMENTS_MODERATE'));
         $commentsNb = $commentRepository->getCommentsNumber($product->id, (bool) Configuration::get('PRODUCT_COMMENTS_MODERATE'));
+        $summaryGrades = $commentRepository->getSummaryGrades($product->id, (bool) Configuration::get('PRODUCT_COMMENTS_MODERATE'));
         $isPostAllowed = $commentRepository->isPostAllowed($product->id, (int) $this->context->cookie->id_customer, (int) $this->context->cookie->id_guest);
 
+        $summary = [
+            5 => ['count' => 0, 'percent' => 0],
+            4 => ['count' => 0, 'percent' => 0],
+            3 => ['count' => 0, 'percent' => 0],
+            2 => ['count' => 0, 'percent' => 0],
+            1 => ['count' => 0, 'percent' => 0],
+        ];
+
+        foreach ($summaryGrades as $grade) {
+            $summary[(int) $grade['grade']] = [
+                'count' => (int) $grade['count'],
+                'percent' => (100 / $commentsNb) * (int) $grade['count'],
+            ];
+        }
+
         /* configure pagination */
         $commentsTotalPages = 0;
         $commentsPerPage = (int) Configuration::get('PRODUCT_COMMENTS_COMMENTS_PER_PAGE');
@@ -986,6 +1002,7 @@ private function renderProductCommentsList($product)
         $this->context->smarty->assign([
             'post_allowed' => $isPostAllowed,
             'usefulness_enabled' => Configuration::get('PRODUCT_COMMENTS_USEFULNESS'),
+            'summary' => $summary,
             'average_grade' => $averageGrade,
             'nb_comments' => $commentsNb,
             'list_comments_url' => $this->context->link->getModuleLink(
diff --git a/src/Repository/ProductCommentRepository.php b/src/Repository/ProductCommentRepository.php
index 88db968..8904c2b 100644
--- a/src/Repository/ProductCommentRepository.php
+++ b/src/Repository/ProductCommentRepository.php
@@ -219,6 +219,36 @@ public function getAverageGrade($productId, $validatedOnly)
         return (float) $qb->execute()->fetch(\PDO::FETCH_COLUMN);
     }
 
+    /**
+     * @param int $productId
+     * @param bool $validatedOnly
+     *
+     * @return array
+     */
+    public function getSummaryGrades($productId, $validatedOnly)
+    {
+        /** @var QueryBuilder $qb */
+        $qb = $this->connection->createQueryBuilder();
+        $qb
+            ->select('pc.grade, COUNT(*) as count')
+            ->from($this->databasePrefix . 'product_comment', 'pc')
+            ->andWhere('pc.id_product = :id_product')
+            ->andWhere('pc.deleted = :deleted')
+            ->setParameter('deleted', 0)
+            ->setParameter('id_product', $productId)
+            ->groupBy('pc.grade')
+        ;
+
+        if ($validatedOnly) {
+            $qb
+                ->andWhere('pc.validate = :validate')
+                ->setParameter('validate', 1)
+            ;
+        }
+
+        return $qb->execute()->fetchAll();
+    }
+
     /**
      * @param int $langId
      * @param int $shopId