diff --git a/VECTOAux/VectoAuxiliaries/AdvancedAuxiliaries.vb b/VECTOAux/VectoAuxiliaries/AdvancedAuxiliaries.vb
index fed02ad3081b0de7bf8c96aa2087a7b6192546b2..1760a7744515ed1ea378713aa4469c48674e3e6d 100644
--- a/VECTOAux/VectoAuxiliaries/AdvancedAuxiliaries.vb
+++ b/VECTOAux/VectoAuxiliaries/AdvancedAuxiliaries.vb
@@ -271,7 +271,7 @@ Public Class AdvancedAuxiliaries
 		Throw New NotImplementedException
 	End Function
 
-	Public ReadOnly Property TotalFuelGRAMS As Single Implements VectoAuxiliaries.IAdvancedAuxiliaries.TotalFuelGRAMS
+	Public ReadOnly Property TotalFuelGRAMS As Double Implements VectoAuxiliaries.IAdvancedAuxiliaries.TotalFuelGRAMS
 		Get
 			If Not M13 Is Nothing Then
 
diff --git a/VectoCommon/AdvancedAuxiliaryInterfaces/IAdvancedAuxiliaries.vb b/VectoCommon/AdvancedAuxiliaryInterfaces/IAdvancedAuxiliaries.vb
index 4cc3a55f3e21c5729d8c8eca40f0f3e3f0991fd3..11742c04e59515aeb62ffa56a9e833e76175da04 100644
--- a/VectoCommon/AdvancedAuxiliaryInterfaces/IAdvancedAuxiliaries.vb
+++ b/VectoCommon/AdvancedAuxiliaryInterfaces/IAdvancedAuxiliaries.vb
@@ -60,7 +60,7 @@ Public Interface IAdvancedAuxiliaries
 	''' <value></value>
 	''' <returns></returns>
 	''' <remarks></remarks>
-	ReadOnly Property TotalFuelGRAMS As Single
+	ReadOnly Property TotalFuelGRAMS As Double
 
 	''' <summary>
 	''' Total Cycle Fuel in Litres
diff --git a/VectoCore/VectoCore/Models/SimulationComponent/Impl/BusAuxiliariesAdapter.cs b/VectoCore/VectoCore/Models/SimulationComponent/Impl/BusAuxiliariesAdapter.cs
index 5988322470655ff2f94bfa213bf7f283d1d207cc..91489d43671d9caf5df9675a845abeae419db34a 100644
--- a/VectoCore/VectoCore/Models/SimulationComponent/Impl/BusAuxiliariesAdapter.cs
+++ b/VectoCore/VectoCore/Models/SimulationComponent/Impl/BusAuxiliariesAdapter.cs
@@ -32,6 +32,7 @@
 using System;
 using System.IO;
 using System.Windows.Forms.VisualStyles;
+using TUGraz.VectoCommon.Models;
 using TUGraz.VectoCommon.Utils;
 using TUGraz.VectoCore.Configuration;
 using TUGraz.VectoCore.Models.Simulation;
@@ -44,20 +45,25 @@ using VectoAuxiliaries;
 
 namespace TUGraz.VectoCore.Models.SimulationComponent.Impl
 {
-	public class BusAuxiliariesAdapter : StatefulVectoSimulationComponent<BusAuxiliariesAdapter.BusAuxState>,
-		IEngineAuxInProvider, IEngineAuxPort
+	public class BusAuxiliariesAdapter : LoggingObject, IEngineAuxInProvider, IEngineAuxPort
 	{
+		protected IDataBus DataBus;
+		protected internal BusAuxState CurrentState;
+		protected internal BusAuxState PreviousState;
+
 		protected IAdvancedAuxiliaries Auxiliaries;
 		private readonly FuelConsumptionAdapter _fcMapAdapter;
 
 
-		public BusAuxiliariesAdapter(IVehicleContainer container, string aauxFile, string cycleName, Kilogram vehicleWeight,
-			FuelConsumptionMap fcMap,
-			PerSecond engineIdleSpeed) : base(container)
+		public BusAuxiliariesAdapter(IDataBus container, string aauxFile, string cycleName, Kilogram vehicleWeight,
+			FuelConsumptionMap fcMap, PerSecond engineIdleSpeed)
 		{
 			//	mAAUX_Global.advancedAuxModel.Signals.DeclarationMode = Cfg.DeclMode
 			//	mAAUX_Global.advancedAuxModel.Signals.WHTC = Declaration.WHTCcorrFactor
+			CurrentState = new BusAuxState();
+			PreviousState = new BusAuxState();
 
+			DataBus = container;
 			var tmpAux = new AdvancedAuxiliaries();
 
 			// 'Set Statics
@@ -114,6 +120,7 @@ namespace TUGraz.VectoCore.Models.SimulationComponent.Impl
 
 		public NewtonMeter Initialize(NewtonMeter torque, PerSecond angularSpeed)
 		{
+			PreviousState.TotalFuelConsumption = 0.SI<Kilogram>();
 			PreviousState.AngularSpeed = angularSpeed;
 			PreviousState.PowerDemand = GetBusAuxPowerDemand(0.SI<Second>(), 1.SI<Second>(), torque, torque, angularSpeed);
 			return PreviousState.PowerDemand / angularSpeed;
@@ -132,7 +139,7 @@ namespace TUGraz.VectoCore.Models.SimulationComponent.Impl
 		}
 
 
-		protected override void DoWriteModalResults(IModalDataContainer container)
+		protected internal void DoWriteModalResults(IModalDataContainer container)
 		{
 			_fcMapAdapter.AllowExtrapolation = true;
 			// cycleStep has to be called here and not in DoCommit, write is called before Commit!
@@ -140,6 +147,7 @@ namespace TUGraz.VectoCore.Models.SimulationComponent.Impl
 			Auxiliaries.CycleStep(CurrentState.dt.Value(), ref message);
 			Log.Warn(message);
 
+			CurrentState.TotalFuelConsumption = Auxiliaries.TotalFuelGRAMS.SI().Gramm.Cast<Kilogram>();
 			container[ModalResultField.P_aux] = CurrentState.PowerDemand;
 
 			container[ModalResultField.AA_NonSmartAlternatorsEfficiency] = Auxiliaries.AA_NonSmartAlternatorsEfficiency;
@@ -193,11 +201,16 @@ namespace TUGraz.VectoCore.Models.SimulationComponent.Impl
 				new SI(Auxiliaries.AA_TotalCycleFuelConsumptionCompressorOn.Value);
 		}
 
-		protected override void DoCommitSimulationStep()
+		protected internal void DoCommitSimulationStep()
 		{
-			AdvanceState();
+			PreviousState = CurrentState;
+			CurrentState = new BusAuxState();
 		}
 
+		protected internal KilogramPerSecond AAuxFuelConsumption
+		{
+			get { return (CurrentState.TotalFuelConsumption - PreviousState.TotalFuelConsumption) / CurrentState.dt; }
+		}
 
 		private Watt GetBusAuxPowerDemand(Second absTime, Second dt, NewtonMeter torquePowerTrain, NewtonMeter torqueEngine,
 			PerSecond angularSpeed, bool dryRun = false)
@@ -256,6 +269,7 @@ namespace TUGraz.VectoCore.Models.SimulationComponent.Impl
 			public Second dt;
 			public PerSecond AngularSpeed;
 			public Watt PowerDemand;
+			public Kilogram TotalFuelConsumption;
 		}
 	}
 }
\ No newline at end of file
diff --git a/VectoCore/VectoCore/Models/SimulationComponent/Impl/CombustionEngine.cs b/VectoCore/VectoCore/Models/SimulationComponent/Impl/CombustionEngine.cs
index 90c9b97008a487fa2615752958700b5e5daf08a7..14c6d7c99eb4a5ab96676cf7616288639a9c036a 100644
--- a/VectoCore/VectoCore/Models/SimulationComponent/Impl/CombustionEngine.cs
+++ b/VectoCore/VectoCore/Models/SimulationComponent/Impl/CombustionEngine.cs
@@ -342,6 +342,11 @@ namespace TUGraz.VectoCore.Models.SimulationComponent.Impl
 
 				var fcWHTC = fcAux * ModelData.WHTCCorrectionFactor;
 				var fcAAUX = fcWHTC;
+				var advancedAux = EngineAux as BusAuxiliariesAdapter;
+				if (advancedAux != null) {
+					advancedAux.DoWriteModalResults(container);
+					fcAAUX = advancedAux.AAuxFuelConsumption;
+				}
 				var fcFinal = fcAAUX;
 
 				container[ModalResultField.FCMap] = fc;
@@ -368,6 +373,10 @@ namespace TUGraz.VectoCore.Models.SimulationComponent.Impl
 		protected override void DoCommitSimulationStep()
 		{
 			AdvanceState();
+			var advancedAux = EngineAux as BusAuxiliariesAdapter;
+			if (advancedAux != null) {
+				advancedAux.DoCommitSimulationStep();
+			}
 		}
 
 		#endregion