diff --git a/src/lang/english.txt b/src/lang/english.txt
index 80834dfceb..eef5c23806 100644
--- a/src/lang/english.txt
+++ b/src/lang/english.txt
@@ -4950,6 +4950,7 @@ STR_VEHICLE_INFO_WEIGHT_POWER_MAX_SPEED_MAX_TE                  :{BLACK}Weight:
 STR_VEHICLE_INFO_TRAIN_LENGTH                                   :{BLACK}Train length {LTBLUE}{DECIMAL} tile{P "" s} {STRING4}
 STR_VEHICLE_INFO_WEIGHT_RATIOS                                  :{BLACK}Power / weight: {LTBLUE}{POWER_WEIGHT_RATIO} {BLACK} Max. T.E / weight: {LTBLUE}{FORCE_WEIGHT_RATIO}
 STR_VEHICLE_INFO_FULL_WEIGHT_WITH_RATIOS                        :{BLACK}Full weight: {LTBLUE}{WEIGHT_SHORT} {STRING2}
+STR_VEHICLE_INFO_MAX_SPEED_LOADED                               :{BLACK}Max. speed (full): {LTBLUE}{VELOCITY}
 
 STR_VEHICLE_INFO_PROFIT_THIS_YEAR_LAST_YEAR                     :{BLACK}Profit this year: {LTBLUE}{CURRENCY_LONG} (last year: {CURRENCY_LONG})
 STR_VEHICLE_INFO_PROFIT_THIS_YEAR_LAST_YEAR_LIFETIME            :{STRING2} (lifetime: {CURRENCY_LONG})
diff --git a/src/saveload/afterload.cpp b/src/saveload/afterload.cpp
index 2fe10c3ca0..f9e56542a1 100644
--- a/src/saveload/afterload.cpp
+++ b/src/saveload/afterload.cpp
@@ -3959,7 +3959,7 @@ bool AfterLoadGame()
 
 	AfterLoadTraceRestrict();
 	AfterLoadTemplateVehiclesUpdate();
-	if (SlXvIsFeaturePresent(XSLFI_TEMPLATE_REPLACEMENT, 1, 5)) {
+	if (SlXvIsFeaturePresent(XSLFI_TEMPLATE_REPLACEMENT, 1, 7)) {
 		AfterLoadTemplateVehiclesUpdateProperties();
 	}
 
diff --git a/src/saveload/extended_ver_sl.cpp b/src/saveload/extended_ver_sl.cpp
index 136b12606c..684f25f39c 100644
--- a/src/saveload/extended_ver_sl.cpp
+++ b/src/saveload/extended_ver_sl.cpp
@@ -100,7 +100,7 @@ const SlxiSubChunkInfo _sl_xv_sub_chunk_infos[] = {
 	{ XSLFI_REVERSE_AT_WAYPOINT,    XSCF_NULL,                1,   1, "reverse_at_waypoint",       nullptr, nullptr, nullptr        },
 	{ XSLFI_VEH_LIFETIME_PROFIT,    XSCF_NULL,                1,   1, "veh_lifetime_profit",       nullptr, nullptr, nullptr        },
 	{ XSLFI_LINKGRAPH_DAY_SCALE,    XSCF_NULL,                1,   1, "linkgraph_day_scale",       nullptr, nullptr, nullptr        },
-	{ XSLFI_TEMPLATE_REPLACEMENT,   XSCF_NULL,                7,   7, "template_replacement",      nullptr, nullptr, "TRPL,TMPL" },
+	{ XSLFI_TEMPLATE_REPLACEMENT,   XSCF_NULL,                8,   8, "template_replacement",      nullptr, nullptr, "TRPL,TMPL" },
 	{ XSLFI_MORE_RAIL_TYPES,        XSCF_NULL,                0,   1, "more_rail_types",           nullptr, nullptr, nullptr        },
 	{ XSLFI_CARGO_TYPE_ORDERS,      XSCF_NULL,                3,   3, "cargo_type_orders",         nullptr, nullptr, "ORDX,VEOX" },
 	{ XSLFI_EXTENDED_GAMELOG,       XSCF_NULL,                1,   1, "extended_gamelog",          nullptr, nullptr, nullptr        },
diff --git a/src/saveload/tbtr_template_veh_sl.cpp b/src/saveload/tbtr_template_veh_sl.cpp
index 58c3c621df..d2af9a3d4f 100644
--- a/src/saveload/tbtr_template_veh_sl.cpp
+++ b/src/saveload/tbtr_template_veh_sl.cpp
@@ -40,6 +40,7 @@ const SaveLoad* GTD() {
 		SLE_VAR(TemplateVehicle, empty_weight, SLE_UINT32),
 		SLE_CONDVAR_X(TemplateVehicle, full_weight, SLE_UINT32, SL_MIN_VERSION, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_TEMPLATE_REPLACEMENT, 6)),
 		SLE_VAR(TemplateVehicle, max_te, SLE_UINT32),
+		SLE_CONDVAR_X(TemplateVehicle, air_drag, SLE_UINT32, SL_MIN_VERSION, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_TEMPLATE_REPLACEMENT, 8)),
 
 		SLE_CONDVAR_X(TemplateVehicle, ctrl_flags, SLE_UINT32, SL_MIN_VERSION, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_TEMPLATE_REPLACEMENT, 7)),
 
@@ -146,6 +147,7 @@ void AfterLoadTemplateVehiclesUpdateProperties()
 				tv->empty_weight = gcache->cached_weight;
 				tv->full_weight = gcache->cached_weight + full_cargo_weight;
 				tv->max_te = gcache->cached_max_te;
+				tv->air_drag = gcache->cached_air_drag;
 				delete t;
 			}
 			cur_company.Restore();
diff --git a/src/tbtr_template_gui_create.cpp b/src/tbtr_template_gui_create.cpp
index 00d0b3c97f..7893e5eaa8 100644
--- a/src/tbtr_template_gui_create.cpp
+++ b/src/tbtr_template_gui_create.cpp
@@ -340,6 +340,11 @@ public:
 						}
 						DrawString(8, r.right, y, STR_VEHICLE_INFO_FULL_WEIGHT_WITH_RATIOS);
 					}
+					if (_settings_game.vehicle.train_acceleration_model != AM_ORIGINAL) {
+						y += FONT_HEIGHT_NORMAL;
+						SetDParam(0, GetTrainEstimatedMaxAchievableSpeed(this->virtual_train, gcache->cached_weight + full_cargo_weight, this->virtual_train->GetDisplayMaxSpeed()));
+						DrawString(8, r.right, y, STR_VEHICLE_INFO_MAX_SPEED_LOADED);
+					}
 					/* Draw cargo summary */
 					CargoArray cargo_caps;
 					for (const Train *tmp = this->virtual_train; tmp != nullptr; tmp = tmp->Next()) {
diff --git a/src/tbtr_template_gui_main.cpp b/src/tbtr_template_gui_main.cpp
index eda053bb19..c9fae86ca9 100644
--- a/src/tbtr_template_gui_main.cpp
+++ b/src/tbtr_template_gui_main.cpp
@@ -763,6 +763,11 @@ public:
 			}
 			DrawString(8, r.right, top, STR_VEHICLE_INFO_FULL_WEIGHT_WITH_RATIOS);
 		}
+		if (_settings_game.vehicle.train_acceleration_model != AM_ORIGINAL) {
+			top += FONT_HEIGHT_NORMAL;
+			SetDParam(0, GetTemplateVehicleEstimatedMaxAchievableSpeed(tmp, tmp->full_weight, tmp->max_speed));
+			DrawString(8, r.right, top, STR_VEHICLE_INFO_MAX_SPEED_LOADED);
+		}
 
 		/* Draw cargo summary */
 		top += ScaleGUITrad(26);
diff --git a/src/tbtr_template_vehicle.h b/src/tbtr_template_vehicle.h
index a5d4e2192d..90b732ced7 100644
--- a/src/tbtr_template_vehicle.h
+++ b/src/tbtr_template_vehicle.h
@@ -111,6 +111,7 @@ public:
 	uint32 empty_weight;
 	uint32 full_weight;
 	uint32 max_te;
+	uint32 air_drag;
 
 	uint32 ctrl_flags;                  ///< See: TemplateVehicleControlFlags
 
@@ -218,4 +219,6 @@ short DeleteTemplateReplacementsByGroupID(GroupID);
 
 void ReindexTemplateReplacements();
 
+int GetTemplateVehicleEstimatedMaxAchievableSpeed(const TemplateVehicle *tv, const int mass, const int speed_cap);
+
 #endif /* TEMPLATE_VEH_H */
diff --git a/src/tbtr_template_vehicle_func.cpp b/src/tbtr_template_vehicle_func.cpp
index 731d095394..d90d00410a 100644
--- a/src/tbtr_template_vehicle_func.cpp
+++ b/src/tbtr_template_vehicle_func.cpp
@@ -169,6 +169,7 @@ void SetupTemplateVehicleFromVirtual(TemplateVehicle *tmp, TemplateVehicle *prev
 		tmp->empty_weight = std::max<uint32>(gcache->cached_weight - cargo_weight, 1);
 		tmp->full_weight = std::max<uint32>(gcache->cached_weight + full_cargo_weight - cargo_weight, 1);
 		tmp->max_te = gcache->cached_max_te;
+		tmp->air_drag = gcache->cached_air_drag;
 	}
 
 	virt->GetImage(DIR_W, EIT_IN_DEPOT, &tmp->sprite_seq);
@@ -490,3 +491,17 @@ void UpdateAllTemplateVehicleImages()
 
 	_template_vehicle_images_valid = true;
 }
+
+int GetTemplateVehicleEstimatedMaxAchievableSpeed(const TemplateVehicle *tv, const int mass, const int speed_cap)
+{
+	int max_speed = 0;
+	int acceleration;
+
+	do
+	{
+		max_speed++;
+		acceleration = GetTrainRealisticAccelerationAtSpeed(max_speed, mass, tv->power, tv->max_te, tv->air_drag, tv->railtype);
+	} while (acceleration > 0 && max_speed < speed_cap);
+
+	return max_speed;
+}
diff --git a/src/train.h b/src/train.h
index dd2b2734f4..29317db1f2 100644
--- a/src/train.h
+++ b/src/train.h
@@ -493,6 +493,7 @@ inline int GetTrainStopLocation(StationID station_id, TileIndex tile, Train *v,
 	return GetTrainStopLocation(station_id, tile, v, update_train_state, station_ahead, station_length, v->x_pos, v->y_pos);
 }
 
+int GetTrainRealisticAccelerationAtSpeed(const int speed, const int mass, const uint32 cached_power, const uint32 max_te, const uint32 air_drag, const RailType railtype);
 int GetTrainEstimatedMaxAchievableSpeed(const Train *train, const int mass, const int speed_cap);
 
 #endif /* TRAIN_H */
diff --git a/src/train_cmd.cpp b/src/train_cmd.cpp
index 6cf27b064b..3b64f9723a 100644
--- a/src/train_cmd.cpp
+++ b/src/train_cmd.cpp
@@ -6920,12 +6920,12 @@ void TrainBrakesOverheatedBreakdown(Vehicle *v)
 	t->breakdown_severity = 0;
 }
 
-static int GetTrainRealisticAccelerationAtSpeed(const Train *train, const int speed, const int mass)
+int GetTrainRealisticAccelerationAtSpeed(const int speed, const int mass, const uint32 cached_power, const uint32 max_te, const uint32 air_drag, const RailType railtype)
 {
-	const int64 power = train->gcache.cached_power * 746ll;
+	const int64 power = cached_power * 746ll;
 	int64 resistance = 0;
 
-	const bool maglev = (GetRailTypeInfo(train->railtype)->acceleration_type == 2);
+	const bool maglev = (GetRailTypeInfo(railtype)->acceleration_type == 2);
 
 	if (!maglev) {
 		/* Static resistance plus rolling friction. */
@@ -6935,9 +6935,8 @@ static int GetTrainRealisticAccelerationAtSpeed(const Train *train, const int sp
 
 	const int area = 14;
 
-	resistance += (area * train->gcache.cached_air_drag * speed * speed) / 1000;
+	resistance += (area * air_drag * speed * speed) / 1000;
 
-	uint32 max_te = train->gcache.cached_max_te; // [N]
 	int64 force;
 
 	if (speed > 0) {
@@ -6973,7 +6972,7 @@ int GetTrainEstimatedMaxAchievableSpeed(const Train *train, const int mass, cons
 	do
 	{
 		max_speed++;
-		acceleration = GetTrainRealisticAccelerationAtSpeed(train, max_speed, mass);
+		acceleration = GetTrainRealisticAccelerationAtSpeed(max_speed, mass, train->gcache.cached_power, train->gcache.cached_max_te, train->gcache.cached_air_drag, train->railtype);
 	} while (acceleration > 0 && max_speed < speed_cap);
 
 	return max_speed;