diff --git a/opendbc/car/tests/test_fw_fingerprint.py b/opendbc/car/tests/test_fw_fingerprint.py
index 0ba1f598bd..aabdaa4ce6 100644
--- a/opendbc/car/tests/test_fw_fingerprint.py
+++ b/opendbc/car/tests/test_fw_fingerprint.py
@@ -26,7 +26,7 @@ def assertFingerprints(self, candidates, expected):
   def test_exact_match(self, brand, car_model, ecus, test_non_essential):
     config = FW_QUERY_CONFIGS[brand]
     CP = CarParams()
-    for _ in range(100):
+    for _ in range(20):
       fw = []
       for ecu, fw_versions in ecus.items():
         # Assume non-essential ECUs apply to all cars, so we catch cases where Car A with