diff --git a/frigate/const.py b/frigate/const.py
index dc666b9a9..0fb547e00 100644
--- a/frigate/const.py
+++ b/frigate/const.py
@@ -27,7 +27,7 @@ LABEL_CONSOLIDATION_MAP = {
 }
 LABEL_CONSOLIDATION_DEFAULT = 0.9
 LABEL_NMS_MAP = {
-    "car": 0.7,
+    "car": 0.6,
 }
 LABEL_NMS_DEFAULT = 0.4
 
diff --git a/frigate/test/test_video.py b/frigate/test/test_video.py
index cba63c950..339660bb5 100644
--- a/frigate/test/test_video.py
+++ b/frigate/test/test_video.py
@@ -287,6 +287,12 @@ class TestObjectBoundingBoxes(unittest.TestCase):
         consolidated_detections = reduce_detections(frame_shape, detections)
         assert len(consolidated_detections) == len(detections)
 
+    def test_vert_stacked_cars_not_reduced(self):
+        detections = [("car", 0.8, (954, 312, 1247, 475), 498512, 1.48, (800, 200, 1400, 600)), ("car", 0.85, (970, 380, 1273, 610), 698752, 1.56, (800, 200, 1400, 700))]
+        frame_shape = (720, 1280)
+        consolidated_detections = reduce_detections(frame_shape, detections)
+        assert len(consolidated_detections) == len(detections)
+
 
 class TestRegionGrid(unittest.TestCase):
     def setUp(self) -> None: