diff --git a/VECTOAux/VectoAuxiliariesTests/IntegrationTests/AuxDemandTest.vb b/VECTOAux/VectoAuxiliariesTests/IntegrationTests/AuxDemandTest.vb
index 6c1b7e8bff805348cf4c0b047a0480a54b77fbb6..1382c0b47883d7bf41f18362bef72769b8a5f0a5 100644
--- a/VECTOAux/VectoAuxiliariesTests/IntegrationTests/AuxDemandTest.vb
+++ b/VECTOAux/VectoAuxiliariesTests/IntegrationTests/AuxDemandTest.vb
@@ -47,5 +47,77 @@ Namespace IntegrationTests
 
 			Assert.AreEqual(expectedPowerDemand, power, 0.0001)
 		End Sub
+
+		<Test>
+		Public Sub AuxFCConsumtionTest()
+
+			Dim driveLinePower As Double = 148
+			Dim internalPower As Double = 148
+			Dim engineSpeed As Double = 1256
+
+
+			Dim engineFCMapFilePath = "TestFiles\Integration\24t Coach.vmap"
+			Dim auxFilePath = "TestFiles\Integration\AdvAuxTest.aaux"
+
+			Dim aux As AdvancedAuxiliaries = New AdvancedAuxiliaries
+
+			aux.VectoInputs.Cycle = "Coach"
+			aux.VectoInputs.VehicleWeightKG = 12000
+			aux.VectoInputs.FuelDensity = 0.832
+			Dim fuelMap As cMAP = New cMAP()
+			fuelMap.FilePath = engineFCMapFilePath
+			fuelMap.ReadFile(False)
+			fuelMap.Triangulate()
+
+			aux.VectoInputs.FuelMap = fuelMap
+
+
+			aux.Signals.TotalCycleTimeSeconds = 15000
+			aux.Signals.EngineIdleSpeed = 560
+
+			aux.Initialise(Path.GetFileName(auxFilePath), Path.GetDirectoryName(Path.GetFullPath(auxFilePath)) + "\")
+
+			aux.Signals.ClutchEngaged = True
+			aux.Signals.EngineDrivelinePower = driveLinePower 'kW
+			aux.Signals.EngineSpeed = engineSpeed 'rpm
+			aux.Signals.EngineDrivelineTorque = driveLinePower * 1000 / (1256 * 2 * Math.PI / 60)
+			aux.Signals.EngineMotoringPower = 24 'kW - has to be positive
+
+			aux.Signals.PreExistingAuxPower = 0
+			aux.Signals.Idle = False
+			aux.Signals.InNeutral = False
+			aux.Signals.RunningCalc = True
+			aux.Signals.Internal_Engine_Power = internalPower	'kW
+
+			Dim msg As String
+			For i As Integer = 0 To 9
+				Assert.AreEqual(4537.96826, aux.AuxiliaryPowerAtCrankWatts, 0.001)
+				aux.CycleStep(1, msg)
+			Next
+
+			Assert.AreEqual(78.4127, aux.AA_TotalCycleFC_Grams, 0.0001)
+
+			aux.Signals.EngineDrivelinePower = -15
+			aux.Signals.EngineDrivelineTorque = aux.Signals.EngineDrivelinePower * 1000 / (1256 * 2 * Math.PI / 60)
+			aux.Signals.Internal_Engine_Power = -50
+
+			For i As Integer = 0 To 9
+				Assert.AreEqual(7405.0791, aux.AuxiliaryPowerAtCrankWatts, 0.001)
+				aux.CycleStep(1, msg)
+			Next
+
+			Assert.AreEqual(81.0836, aux.AA_TotalCycleFC_Grams, 0.0001)
+
+			aux.Signals.EngineDrivelinePower = driveLinePower
+			aux.Signals.EngineDrivelineTorque = aux.Signals.EngineDrivelinePower * 1000 / (1256 * 2 * Math.PI / 60)
+			aux.Signals.Internal_Engine_Power = internalPower
+
+			For i As Integer = 0 To 9
+				Assert.AreEqual(4537.96826, aux.AuxiliaryPowerAtCrankWatts, 0.001)
+				aux.CycleStep(1, msg)
+			Next
+
+			Assert.AreEqual(160.08049, aux.AA_TotalCycleFC_Grams, 0.0001)
+		End Sub
 	End Class
 End Namespace
\ No newline at end of file
diff --git a/VectoCoreTest/Integration/BusAuxiliaries/AuxDemandTest.cs b/VectoCoreTest/Integration/BusAuxiliaries/AuxDemandTest.cs
index 3407f80991a4552bee2399e5d3766c93da16426b..fa1c84b21c813b2611a64994a3321af20b9427d7 100644
--- a/VectoCoreTest/Integration/BusAuxiliaries/AuxDemandTest.cs
+++ b/VectoCoreTest/Integration/BusAuxiliaries/AuxDemandTest.cs
@@ -1,4 +1,6 @@
-using NUnit.Framework;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using NUnit.Framework;
+using TUGraz.VectoCore.Models.Simulation.Data;
 using TUGraz.VectoCore.Models.Simulation.Impl;
 using TUGraz.VectoCore.Models.SimulationComponent.Data;
 using TUGraz.VectoCore.Models.SimulationComponent.Data.Engine;
@@ -44,10 +46,80 @@ namespace TUGraz.VectoCore.Tests.Integration.BusAuxiliaries
 			var engineSpeed = engineSpeedRpm.RPMtoRad();
 			busAux.Initialize(engineDrivelinePower / engineSpeed, engineSpeed);
 
-			var power = busAux.PowerDemand(0.SI<Second>(), 1.SI<Second>(), engineDrivelinePower / engineSpeed,
+			var torque = busAux.PowerDemand(0.SI<Second>(), 1.SI<Second>(), engineDrivelinePower / engineSpeed,
 				(internalPower * 1000).SI<Watt>() / engineSpeed, engineSpeed);
 
-			Assert.AreEqual(expectedPowerDemand, (power * engineSpeed).Value(), 1e-4);
+			Assert.AreEqual(expectedPowerDemand, (torque * engineSpeed).Value(), 1e-4);
+		}
+
+		[Test]
+		public void AuxFCConsumptionTest()
+		{
+			var driveLinePower = 148;
+			var engineSpeedRpm = 1256;
+			var internalPower = 148;
+
+
+			var auxFilePath = @"TestData\Integration\BusAuxiliaries\AdvAuxTest.aaux";
+			var engineFLDFilePath = @"TestData\Integration\BusAuxiliaries\24t Coach.vfld";
+			var engineFCMapFilePath = @"TestData\Integration\BusAuxiliaries\24t Coach.vmap";
+
+			var vehicle = new VehicleContainer();
+			var fcMap = FuelConsumptionMap.ReadFromFile(engineFCMapFilePath);
+			var fld = EngineFullLoadCurve.ReadFromFile(engineFLDFilePath);
+			var modelData = new CombustionEngineData() {
+				ConsumptionMap = fcMap,
+				FullLoadCurve = fld,
+				IdleSpeed = 560.SI<PerSecond>()
+			};
+
+			var engine = new CombustionEngine(vehicle, modelData);
+			//new Vehicle(vehicle, new VehicleData());
+			var driver = new MockDriver(vehicle) { VehicleStopped = false };
+			var gbx = new MockGearbox(vehicle) { Gear = 1 };
+
+			var busAux = new BusAuxiliariesAdapter(vehicle, auxFilePath, "Coach", 12000.SI<Kilogram>(),
+				fcMap, modelData.IdleSpeed);
+
+
+			var engineDrivelinePower = (driveLinePower * 1000).SI<Watt>();
+			var engineSpeed = engineSpeedRpm.RPMtoRad();
+			busAux.Initialize(engineDrivelinePower / engineSpeed, engineSpeed);
+
+			var modalData = new MockModalDataContainer();
+
+			for (int i = 0; i < 10; i++) {
+				var torque = busAux.PowerDemand(0.SI<Second>(), 1.SI<Second>(), engineDrivelinePower / engineSpeed,
+					(internalPower * 1000).SI<Watt>() / engineSpeed, engineSpeed);
+				Assert.AreEqual(4537.96826, (torque * engineSpeed).Value(), 1e-3);
+				busAux.CommitSimulationStep(modalData);
+			}
+
+			Assert.AreEqual(78.4127, ((SI)modalData[ModalResultField.AA_TotalCycleFC_Grams]).Value(), 0.0001);
+
+			engineDrivelinePower = -15000.SI<Watt>();
+			internalPower = -50;
+
+			for (int i = 0; i < 10; i++) {
+				var torque = busAux.PowerDemand(0.SI<Second>(), 1.SI<Second>(), engineDrivelinePower / engineSpeed,
+					(internalPower * 1000).SI<Watt>() / engineSpeed, engineSpeed);
+				Assert.AreEqual(7405.0791, (torque * engineSpeed).Value(), 1e-3);
+				busAux.CommitSimulationStep(modalData);
+			}
+
+			Assert.AreEqual(81.0836, ((SI)modalData[ModalResultField.AA_TotalCycleFC_Grams]).Value(), 0.0001);
+
+			engineDrivelinePower = (driveLinePower * 1000).SI<Watt>();
+			internalPower = 148;
+
+			for (int i = 0; i < 10; i++) {
+				var torque = busAux.PowerDemand(0.SI<Second>(), 1.SI<Second>(), engineDrivelinePower / engineSpeed,
+					(internalPower * 1000).SI<Watt>() / engineSpeed, engineSpeed);
+				Assert.AreEqual(4537.96826, (torque * engineSpeed).Value(), 1e-3);
+				busAux.CommitSimulationStep(modalData);
+			}
+
+			Assert.AreEqual(160.08049, ((SI)modalData[ModalResultField.AA_TotalCycleFC_Grams]).Value(), 0.0001);
 		}
 	}
 }
\ No newline at end of file