diff --git a/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/AbstractSimulationDataAdapter.cs b/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/AbstractSimulationDataAdapter.cs
index 854ee594830d21bc5430cf70fff7373d259897af..d7ec92a767e44cea008df0700fef2962ebb499a9 100644
--- a/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/AbstractSimulationDataAdapter.cs
+++ b/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/AbstractSimulationDataAdapter.cs
@@ -172,7 +172,7 @@ namespace TUGraz.VectoCore.InputData.Reader.DataObjectAdapter
 			};
 		}
 
-		protected virtual TransmissionLossMap CreateGearLossMap(ITransmissionInputData gear, uint i, bool useEfficiencyFallback, VehicleCategory vehicleCategory )
+		protected virtual TransmissionLossMap CreateGearLossMap(ITransmissionInputData gear, uint i, bool useEfficiencyFallback, VehicleCategory vehicleCategory, GearboxType gearboxType)
 		{
 			if (gear.LossMap != null) {
 				return TransmissionLossMapReader.Create(gear.LossMap, gear.Ratio, string.Format("Gear {0}", i + 1), true);
diff --git a/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/DeclarationDataAdapterCompletedBusGeneric.cs b/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/DeclarationDataAdapterCompletedBusGeneric.cs
index 0917d0e8af8dc7649c64063f93dfcd6aaef5f58f..0762eecc7a64b427f9319a542307a4f81b402fdc 100644
--- a/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/DeclarationDataAdapterCompletedBusGeneric.cs
+++ b/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/DeclarationDataAdapterCompletedBusGeneric.cs
@@ -1,25 +1,14 @@
 using System;
 using System.Collections.Generic;
-using System.Linq;
-using TUGraz.VectoCommon.BusAuxiliaries;
 using TUGraz.VectoCommon.Exceptions;
 using TUGraz.VectoCommon.InputData;
 using TUGraz.VectoCommon.Models;
 using TUGraz.VectoCommon.Utils;
-using TUGraz.VectoCore.Configuration;
 using TUGraz.VectoCore.InputData.Reader.ComponentData;
-using TUGraz.VectoCore.Models.BusAuxiliaries;
-using TUGraz.VectoCore.Models.BusAuxiliaries.DownstreamModules.Impl.Electrics;
-using TUGraz.VectoCore.Models.BusAuxiliaries.DownstreamModules.Impl.HVAC;
-using TUGraz.VectoCore.Models.BusAuxiliaries.DownstreamModules.Impl.Pneumatics;
-using TUGraz.VectoCore.Models.BusAuxiliaries.Interfaces.DownstreamModules.Electrics;
 using TUGraz.VectoCore.Models.Declaration;
 using TUGraz.VectoCore.Models.GenericModelData;
-using TUGraz.VectoCore.Models.Simulation.Data;
-using TUGraz.VectoCore.Models.SimulationComponent;
 using TUGraz.VectoCore.Models.SimulationComponent.Data;
 using TUGraz.VectoCore.Models.SimulationComponent.Data.Gearbox;
-using TUGraz.VectoCore.Utils;
 
 namespace TUGraz.VectoCore.InputData.Reader.DataObjectAdapter
 {
@@ -31,6 +20,7 @@ namespace TUGraz.VectoCore.InputData.Reader.DataObjectAdapter
 
 		public const double GearEfficiencyDirectGear = 0.98;
 		public const double GearEfficiencyIndirectGear = 0.96;
+		public const double GearEfficiencyAT = 0.925;
 
 
 		#region Overrides of DeclarationDataAdapterPrimaryBus
@@ -79,9 +69,11 @@ namespace TUGraz.VectoCore.InputData.Reader.DataObjectAdapter
 
 		#region Overrides of AbstractSimulationDataAdapter
 
-		protected override TransmissionLossMap CreateGearLossMap(
-			ITransmissionInputData gear, uint i, bool useEfficiencyFallback, VehicleCategory vehicleCategory)
+		protected override TransmissionLossMap CreateGearLossMap(ITransmissionInputData gear, uint i, bool useEfficiencyFallback, VehicleCategory vehicleCategory, GearboxType gearboxType)
 		{
+			if (gearboxType.AutomaticTransmission()) {
+				return TransmissionLossMapReader.Create(GearEfficiencyAT, gear.Ratio, $"Gear {i + 1}");
+			}
 			return TransmissionLossMapReader.Create(
 				gear.Ratio.IsEqual(1) ? GearEfficiencyDirectGear : GearEfficiencyIndirectGear, gear.Ratio, $"Gear {i + 1}");
 		}
diff --git a/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/DeclarationDataAdapterHeavyLorry.cs b/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/DeclarationDataAdapterHeavyLorry.cs
index ad63ae01d290fa654ce21ef2927c9429173b1c5e..9b924cdab1ea0b60e6b9b2f60bd47c54ba2da9ff 100644
--- a/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/DeclarationDataAdapterHeavyLorry.cs
+++ b/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/DeclarationDataAdapterHeavyLorry.cs
@@ -369,7 +369,7 @@ namespace TUGraz.VectoCore.InputData.Reader.DataObjectAdapter
 				: inputData.VehicleCategory;
 			for (uint i = 0; i < gearsInput.Count; i++) {
 				var gear = gearsInput[(int)i];
-				var lossMap = CreateGearLossMap(gear, i, false, vehicleCategory);
+				var lossMap = CreateGearLossMap(gear, i, false, vehicleCategory, gearbox.Type);
 
 				var shiftPolygon = shiftPolygonCalc != null
 					? shiftPolygonCalc.ComputeDeclarationShiftPolygon(
diff --git a/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/DeclarationDataAdapterSingleBus.cs b/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/DeclarationDataAdapterSingleBus.cs
index 1da8215e0fe15fedee78c87d74d9f3803d5178f2..84f9ca2546b25934774a854ccd5f9d41e55464c8 100644
--- a/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/DeclarationDataAdapterSingleBus.cs
+++ b/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/DeclarationDataAdapterSingleBus.cs
@@ -50,8 +50,7 @@ namespace TUGraz.VectoCore.InputData.Reader.DataObjectAdapter
 		#endregion
 
 
-		protected override TransmissionLossMap CreateGearLossMap(
-			ITransmissionInputData gear, uint i, bool useEfficiencyFallback, VehicleCategory vehicleCategory)
+		protected override TransmissionLossMap CreateGearLossMap(ITransmissionInputData gear, uint i, bool useEfficiencyFallback, VehicleCategory vehicleCategory, GearboxType gearboxType)
 		{
 			return TransmissionLossMapReader.Create(gear.LossMap, gear.Ratio, string.Format("Gear {0}", i + 1), true);
 		}
diff --git a/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/EngineeringDataAdapter.cs b/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/EngineeringDataAdapter.cs
index dcf1454b3b8ba4b8efb4d28eb76a429bfb8a66b7..d18f0eb065402f0429ee0468ed742026faccb62a 100644
--- a/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/EngineeringDataAdapter.cs
+++ b/VectoCore/VectoCore/InputData/Reader/DataObjectAdapter/EngineeringDataAdapter.cs
@@ -318,7 +318,7 @@ namespace TUGraz.VectoCore.InputData.Reader.DataObjectAdapter
 			}
 			for (uint i = 0; i < gearbox.Gears.Count; i++) {
 				var gear = gearbox.Gears[(int)i];
-				var lossMap = CreateGearLossMap(gear, i, true, VehicleCategory.Unknown);
+				var lossMap = CreateGearLossMap(gear, i, true, VehicleCategory.Unknown, gearbox.Type);
 
 				var shiftPolygon = gear.ShiftPolygon != null && gear.ShiftPolygon.SourceType != DataSourceType.Missing
 					? ShiftPolygonReader.Create(gear.ShiftPolygon)