diff --git a/selfdrive/car/subaru/interface.py b/selfdrive/car/subaru/interface.py
index fb2062ac2e..70989df5ba 100644
--- a/selfdrive/car/subaru/interface.py
+++ b/selfdrive/car/subaru/interface.py
@@ -40,9 +40,10 @@ class CarInterface(CarInterfaceBase):
     else:
       CarInterfaceBase.configure_torque_tune(candidate, ret.lateralTuning)
 
-    ret.mass = candidate.config.specs.mass
-    ret.wheelbase = candidate.config.specs.wheelbase
-    ret.steerRatio = candidate.config.specs.steerRatio
+    platform_config = CAR(candidate).config
+    ret.mass = platform_config.specs.mass
+    ret.wheelbase = platform_config.specs.wheelbase
+    ret.steerRatio = platform_config.specs.steerRatio
     ret.centerToFront = ret.wheelbase * 0.5
 
     if candidate in (CAR.ASCENT, CAR.ASCENT_2023):