diff --git a/src/script/api/script_engine.cpp b/src/script/api/script_engine.cpp
index 088b692925..10a49131c9 100644
--- a/src/script/api/script_engine.cpp
+++ b/src/script/api/script_engine.cpp
@@ -10,6 +10,7 @@
 #include "../../stdafx.h"
 #include "script_engine.hpp"
 #include "script_cargo.hpp"
+#include "script_timemode.hpp"
 #include "../../company_base.h"
 #include "../../strings_func.h"
 #include "../../rail.h"
@@ -128,12 +129,14 @@
 	return ::Engine::Get(engine_id)->GetCost();
 }
 
-/* static */ SQInteger ScriptEngine::GetMaxAge(EngineID engine_id)
+/* static */ ScriptDate::Date ScriptEngine::GetMaxAge(EngineID engine_id)
 {
-	if (!IsValidEngine(engine_id)) return -1;
-	if (GetVehicleType(engine_id) == ScriptVehicle::VT_RAIL && IsWagon(engine_id)) return -1;
+	if (!IsValidEngine(engine_id)) return ScriptDate::DATE_INVALID;
+	if (GetVehicleType(engine_id) == ScriptVehicle::VT_RAIL && IsWagon(engine_id)) return ScriptDate::DATE_INVALID;
 
-	return ::Engine::Get(engine_id)->GetLifeLengthInDays().base();
+	if (ScriptTimeMode::IsCalendarMode()) return (ScriptDate::Date)::Engine::Get(engine_id)->GetLifeLengthInDays().base();
+
+	return (ScriptDate::Date)(::Engine::Get(engine_id)->GetLifeLengthInDays().base() * std::max<uint>(_settings_game.economy.minutes_per_calendar_year, CalendarTime::DEF_MINUTES_PER_YEAR) / CalendarTime::DEF_MINUTES_PER_YEAR);
 }
 
 /* static */ Money ScriptEngine::GetRunningCost(EngineID engine_id)
diff --git a/src/script/api/script_engine.hpp b/src/script/api/script_engine.hpp
index 2baed5bec3..7ec835d0be 100644
--- a/src/script/api/script_engine.hpp
+++ b/src/script/api/script_engine.hpp
@@ -128,7 +128,7 @@ public:
 	 * @returns The maximum age of a new engine in days.
 	 * @note Age is in days; divide by 366 to get per year.
 	 */
-	static SQInteger GetMaxAge(EngineID engine_id);
+	static ScriptDate::Date GetMaxAge(EngineID engine_id);
 
 	/**
 	 * Get the running cost of an engine.
diff --git a/src/script/api/script_vehicle.cpp b/src/script/api/script_vehicle.cpp
index 1fd0857bc4..05b640446f 100644
--- a/src/script/api/script_vehicle.cpp
+++ b/src/script/api/script_vehicle.cpp
@@ -13,6 +13,7 @@
 #include "script_gamesettings.hpp"
 #include "script_group.hpp"
 #include "script_map.hpp"
+#include "script_timemode.hpp"
 #include "../script_instance.hpp"
 #include "../../string_func.h"
 #include "../../strings_func.h"
@@ -307,37 +308,43 @@
 	return GetString(STR_VEHICLE_NAME);
 }
 
-/* static */ SQInteger ScriptVehicle::GetAge(VehicleID vehicle_id)
+/* static */ ScriptDate::Date ScriptVehicle::GetAge(VehicleID vehicle_id)
 {
-	if (!IsValidVehicle(vehicle_id)) return -1;
+	if (!IsValidVehicle(vehicle_id)) return ScriptDate::DATE_INVALID;
 
-	return ::Vehicle::Get(vehicle_id)->age.base();
+	if (ScriptTimeMode::IsCalendarMode()) return (ScriptDate::Date)::Vehicle::Get(vehicle_id)->age.base();
+
+	return (ScriptDate::Date)::Vehicle::Get(vehicle_id)->economy_age.base();
 }
 
-/* static */ SQInteger ScriptVehicle::GetWagonAge(VehicleID vehicle_id, SQInteger wagon)
+/* static */ ScriptDate::Date ScriptVehicle::GetWagonAge(VehicleID vehicle_id, SQInteger wagon)
 {
-	if (!IsValidVehicle(vehicle_id)) return -1;
-	if (wagon >= GetNumWagons(vehicle_id)) return -1;
+	if (!IsValidVehicle(vehicle_id)) return ScriptDate::DATE_INVALID;
+	if (wagon >= GetNumWagons(vehicle_id)) return ScriptDate::DATE_INVALID;
 
 	const Vehicle *v = ::Vehicle::Get(vehicle_id);
 	if (v->type == VEH_TRAIN) {
 		while (wagon-- > 0) v = ::Train::From(v)->GetNextUnit();
 	}
-	return v->age.base();
+	if (ScriptTimeMode::IsCalendarMode()) return (ScriptDate::Date)v->age.base();
+
+	return (ScriptDate::Date)v->economy_age.base();
 }
 
-/* static */ SQInteger ScriptVehicle::GetMaxAge(VehicleID vehicle_id)
+/* static */ ScriptDate::Date ScriptVehicle::GetMaxAge(VehicleID vehicle_id)
 {
-	if (!IsPrimaryVehicle(vehicle_id)) return -1;
+	if (!IsPrimaryVehicle(vehicle_id)) return ScriptDate::DATE_INVALID;
 
-	return ::Vehicle::Get(vehicle_id)->max_age.base();
+	if (ScriptTimeMode::IsCalendarMode()) return (ScriptDate::Date)::Vehicle::Get(vehicle_id)->max_age.base();
+
+	return (ScriptDate::Date)(::Vehicle::Get(vehicle_id)->max_age.base() * std::max<uint>(_settings_game.economy.minutes_per_calendar_year, CalendarTime::DEF_MINUTES_PER_YEAR) / CalendarTime::DEF_MINUTES_PER_YEAR);
 }
 
-/* static */ SQInteger ScriptVehicle::GetAgeLeft(VehicleID vehicle_id)
+/* static */ ScriptDate::Date ScriptVehicle::GetAgeLeft(VehicleID vehicle_id)
 {
-	if (!IsPrimaryVehicle(vehicle_id)) return -1;
+	if (!IsPrimaryVehicle(vehicle_id)) return ScriptDate::DATE_INVALID;
 
-	return (::Vehicle::Get(vehicle_id)->max_age - ::Vehicle::Get(vehicle_id)->age).base();
+	return (ScriptDate::Date)(GetMaxAge(vehicle_id) - GetAge(vehicle_id));
 }
 
 /* static */ SQInteger ScriptVehicle::GetCurrentSpeed(VehicleID vehicle_id)
diff --git a/src/script/api/script_vehicle.hpp b/src/script/api/script_vehicle.hpp
index bd6d79ebcc..2dc1b8e488 100644
--- a/src/script/api/script_vehicle.hpp
+++ b/src/script/api/script_vehicle.hpp
@@ -11,6 +11,7 @@
 #define SCRIPT_VEHICLE_HPP
 
 #include "script_road.hpp"
+#include "script_date.hpp"
 
 /**
  * Class that handles all vehicle related functions.
@@ -189,7 +190,7 @@ public:
 	 * @return The current age the vehicle has.
 	 * @note The age is in days.
 	 */
-	static SQInteger GetAge(VehicleID vehicle_id);
+	static ScriptDate::Date GetAge(VehicleID vehicle_id);
 
 	/**
 	 * Get the current age of a second (or third, etc.) engine in a train vehicle.
@@ -200,7 +201,7 @@ public:
 	 * @return The current age the vehicle has.
 	 * @note The age is in days.
 	 */
-	static SQInteger GetWagonAge(VehicleID vehicle_id, SQInteger wagon);
+	static ScriptDate::Date GetWagonAge(VehicleID vehicle_id, SQInteger wagon);
 
 	/**
 	 * Get the maximum age of a vehicle.
@@ -209,7 +210,7 @@ public:
 	 * @return The maximum age the vehicle has.
 	 * @note The age is in days.
 	 */
-	static SQInteger GetMaxAge(VehicleID vehicle_id);
+	static ScriptDate::Date GetMaxAge(VehicleID vehicle_id);
 
 	/**
 	 * Get the age a vehicle has left (maximum - current).
@@ -218,7 +219,7 @@ public:
 	 * @return The age the vehicle has left.
 	 * @note The age is in days.
 	 */
-	static SQInteger GetAgeLeft(VehicleID vehicle_id);
+	static ScriptDate::Date GetAgeLeft(VehicleID vehicle_id);
 
 	/**
 	 * Get the current speed of a vehicle.