diff --git a/selfdrive/car/tests/test_car_interfaces.py b/selfdrive/car/tests/test_car_interfaces.py
index 48d85584b3..11e7be7f44 100755
--- a/selfdrive/car/tests/test_car_interfaces.py
+++ b/selfdrive/car/tests/test_car_interfaces.py
@@ -35,6 +35,12 @@ class TestCarInterfaces(unittest.TestCase):
     self.assertGreater(car_params.centerToFront, 0)
     self.assertGreater(car_params.maxLateralAccel, 0)
 
+    # Longitudinal sanity checks
+    self.assertEqual(len(car_params.longitudinalTuning.kpV), len(car_params.longitudinalTuning.kpBP))
+    self.assertEqual(len(car_params.longitudinalTuning.kiV), len(car_params.longitudinalTuning.kiBP))
+    self.assertEqual(len(car_params.longitudinalTuning.deadzoneV), len(car_params.longitudinalTuning.deadzoneBP))
+
+    # Lateral sanity checks
     if car_params.steerControlType != car.CarParams.SteerControlType.angle:
       tune = car_params.lateralTuning
       if tune.which() == 'pid':