diff --git a/selfdrive/car/tests/routes.py b/selfdrive/car/tests/routes.py
index 056a3484a7..857ba8e4f4 100644
--- a/selfdrive/car/tests/routes.py
+++ b/selfdrive/car/tests/routes.py
@@ -33,7 +33,7 @@ non_tested_cars = [
 
 class CarTestRoute(NamedTuple):
   route: str
-  car_model: str
+  car_model: Optional[str]
   segment: Optional[int] = None
 
 
diff --git a/selfdrive/car/tests/test_models.py b/selfdrive/car/tests/test_models.py
index 195b537378..b11b067350 100755
--- a/selfdrive/car/tests/test_models.py
+++ b/selfdrive/car/tests/test_models.py
@@ -66,9 +66,9 @@ SKIP_ENV_VAR = "SKIP_LONG_TESTS"
 
 
 class TestCarModelBase(unittest.TestCase):
-  car_model = None
-  test_route = None
-  ci = True
+  car_model: Optional[str] = None
+  test_route: Optional[CarTestRoute] = None
+  ci: bool = True
 
   @unittest.skipIf(SKIP_ENV_VAR in os.environ, f"Long running test skipped. Unset {SKIP_ENV_VAR} to run")
   @classmethod