diff --git a/MoreRealistic/scripts/MR_VehicleMotor.lua b/MoreRealistic/scripts/MR_VehicleMotor.lua
index 502aea6..24ff751 100644
--- a/MoreRealistic/scripts/MR_VehicleMotor.lua
+++ b/MoreRealistic/scripts/MR_VehicleMotor.lua
@@ -1008,7 +1008,7 @@ end
 --
 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 VehicleMotor.mrUpdateStartGearValues = function(self, superFunc, dt)
-    if self.mrTransmissionManagedByMR then --20260927 - AutoDrive can't use MR transmission autoshift logic.
+    if self.vehicle.mrTransmissionManagedByMR then --20260927 - AutoDrive can't use MR transmission autoshift logic.
         local neededPtoTorque = PowerConsumer.getTotalConsumedPtoTorque(self.vehicle, nil, nil, true) / self:getPtoMotorRpmRatio()
         local ptoPower = self.peakMotorPowerRotSpeed * neededPtoTorque
         self.startGearValues.availablePower = self.peakMotorPower - ptoPower
@@ -1578,4 +1578,4 @@ VehicleMotor.mrFindBestGearCombination = function(self, curGear1, gearbox1, gear
 
     return newGear1, newGear2
 
-end
\ No newline at end of file
+end