diff --git a/src/console_cmds.cpp b/src/console_cmds.cpp
index e4cdacad26..3dd21c2331 100644
--- a/src/console_cmds.cpp
+++ b/src/console_cmds.cpp
@@ -2133,6 +2133,18 @@ DEF_CONSOLE_CMD(ConDumpLoadDebugLog)
 	return true;
 }
 
+DEF_CONSOLE_CMD(ConDumpLoadDebugConfig)
+{
+	if (argc == 0) {
+		IConsoleHelp("Dump load debug config.");
+		return true;
+	}
+
+	std::string dbgc = _loadgame_DBGC_data;
+	PrintLineByLine(const_cast<char *>(dbgc.c_str()));
+	return true;
+}
+
 DEF_CONSOLE_CMD(ConCheckCaches)
 {
 	if (argc == 0) {
@@ -2647,6 +2659,7 @@ void IConsoleStdLibRegister()
 	IConsoleCmdRegister("dump_st_flow_stats", ConStFlowStats, nullptr, true);
 	IConsoleCmdRegister("dump_game_events", ConDumpGameEvents, nullptr, true);
 	IConsoleCmdRegister("dump_load_debug_log", ConDumpLoadDebugLog, nullptr, true);
+	IConsoleCmdRegister("dump_load_debug_config", ConDumpLoadDebugConfig, nullptr, true);
 	IConsoleCmdRegister("check_caches", ConCheckCaches, nullptr, true);
 	IConsoleCmdRegister("show_town_window", ConShowTownWindow, nullptr, true);
 	IConsoleCmdRegister("show_station_window", ConShowStationWindow, nullptr, true);
diff --git a/src/crashlog.cpp b/src/crashlog.cpp
index 23e7d932ca..7122e0d3c6 100644
--- a/src/crashlog.cpp
+++ b/src/crashlog.cpp
@@ -662,6 +662,7 @@ bool CrashLog::MakeCrashLog() const
 
 	SetScreenshotAuxiliaryText("Crash Log", buffer);
 	_savegame_DBGL_data = buffer;
+	_save_DBGC_data = true;
 
 	if (IsNonMainThread()) {
 		printf("Asking main thread to write crash savegame and screenshot...\n\n");
@@ -716,6 +717,7 @@ bool CrashLog::MakeDesyncCrashLog(const std::string *log_in, std::string *log_ou
 	}
 
 	_savegame_DBGL_data = buffer;
+	_save_DBGC_data = true;
 	bret = this->WriteSavegame(filename, lastof(filename), name_buffer);
 	if (bret) {
 		printf("Desync savegame written to %s. Please add this file and the last (auto)save to any bug reports.\n\n", filename);
@@ -724,6 +726,7 @@ bool CrashLog::MakeDesyncCrashLog(const std::string *log_in, std::string *log_ou
 		printf("Writing desync savegame failed. Please attach the last (auto)save to any bug reports.\n\n");
 	}
 	_savegame_DBGL_data = nullptr;
+	_save_DBGC_data = false;
 
 	if (!(_screen.width < 1 || _screen.height < 1 || _screen.dst_ptr == nullptr)) {
 		SetScreenshotAuxiliaryText("Desync Log", buffer);
diff --git a/src/debug.cpp b/src/debug.cpp
index 31951d03c8..271774a5e8 100644
--- a/src/debug.cpp
+++ b/src/debug.cpp
@@ -56,6 +56,8 @@ int _debug_random_level;
 
 const char *_savegame_DBGL_data = nullptr;
 std::string _loadgame_DBGL_data;
+bool _save_DBGC_data = false;
+std::string _loadgame_DBGC_data;
 
 uint32 _realtime_tick = 0;
 
diff --git a/src/debug.h b/src/debug.h
index 62e8ff8dbc..9a90e96762 100644
--- a/src/debug.h
+++ b/src/debug.h
@@ -59,6 +59,8 @@ extern int _debug_random_level;
 
 extern const char *_savegame_DBGL_data;
 extern std::string _loadgame_DBGL_data;
+extern bool _save_DBGC_data;
+extern std::string _loadgame_DBGC_data;
 
 void CDECL debug(const char *dbg, const char *format, ...) WARN_FORMAT(2, 3);
 
diff --git a/src/fios.h b/src/fios.h
index 363d3563d9..78e3c1a1ce 100644
--- a/src/fios.h
+++ b/src/fios.h
@@ -46,8 +46,9 @@ struct LoadCheckData {
 	struct LoggedAction *gamelog_action;          ///< Gamelog actions
 	uint gamelog_actions;                         ///< Number of gamelog actions
 
-	bool want_debug_log_data = false;
+	bool want_debug_data = false;
 	std::string debug_log_data;
+	std::string debug_config_data;
 
 	LoadCheckData() : error_data(nullptr), grfconfig(nullptr),
 			grf_compatibility(GLC_NOT_FOUND), gamelog_action(nullptr), gamelog_actions(0)
diff --git a/src/ini_load.cpp b/src/ini_load.cpp
index dd72831308..0ab4967736 100644
--- a/src/ini_load.cpp
+++ b/src/ini_load.cpp
@@ -207,7 +207,7 @@ void IniLoadFile::RemoveGroup(const char *name)
  * @param subdir the sub directory to load the file from.
  * @pre nothing has been loaded yet.
  */
-void IniLoadFile::LoadFromDisk(const char *filename, Subdirectory subdir)
+void IniLoadFile::LoadFromDisk(const char *filename, Subdirectory subdir, std::string *save)
 {
 	assert(this->last_group == &this->group);
 
@@ -222,10 +222,16 @@ void IniLoadFile::LoadFromDisk(const char *filename, Subdirectory subdir)
 	FILE *in = this->OpenFile(filename, subdir, &end);
 	if (in == nullptr) return;
 
+	if (save != nullptr) {
+		save->clear();
+		save->reserve(end);
+	}
+
 	end += ftell(in);
 
 	/* for each line in the file */
 	while ((size_t)ftell(in) < end && fgets(buffer, sizeof(buffer), in)) {
+		if (save != nullptr) *save += buffer;
 		char c, *s;
 		/* trim whitespace from the left side */
 		for (s = buffer; *s == ' ' || *s == '\t'; s++) {}
diff --git a/src/ini_type.h b/src/ini_type.h
index 679969efda..aefa0a5e64 100644
--- a/src/ini_type.h
+++ b/src/ini_type.h
@@ -62,7 +62,7 @@ struct IniLoadFile {
 	IniGroup *GetGroup(const char *name, size_t len = 0, bool create_new = true);
 	void RemoveGroup(const char *name);
 
-	void LoadFromDisk(const char *filename, Subdirectory subdir);
+	void LoadFromDisk(const char *filename, Subdirectory subdir, std::string *save = nullptr);
 
 	/**
 	 * Open the INI file.
diff --git a/src/openttd.cpp b/src/openttd.cpp
index e8f2f6baf5..fdcbb9d249 100644
--- a/src/openttd.cpp
+++ b/src/openttd.cpp
@@ -335,14 +335,24 @@ static void WriteSavegameDebugData(const char *name)
 	};
 	p += seprintf(p, buflast, "Name:         %s\n", name);
 	if (_load_check_data.debug_log_data.size()) {
-		p += seprintf(p, buflast, "%u bytes of debug data in savegame\n", (uint) _load_check_data.debug_log_data.size());
+		p += seprintf(p, buflast, "%u bytes of debug log data in savegame\n", (uint) _load_check_data.debug_log_data.size());
 		std::string buffer = _load_check_data.debug_log_data;
 		ProcessLineByLine(const_cast<char *>(buffer.data()), [&](const char *line) {
 			if (buflast - p <= 1024) bump_size();
 			p += seprintf(p, buflast, "> %s\n", line);
 		});
 	} else {
-		p += seprintf(p, buflast, "No debug data in savegame\n");
+		p += seprintf(p, buflast, "No debug log data in savegame\n");
+	}
+	if (_load_check_data.debug_config_data.size()) {
+		p += seprintf(p, buflast, "%u bytes of debug config data in savegame\n", (uint) _load_check_data.debug_config_data.size());
+		std::string buffer = _load_check_data.debug_config_data;
+		ProcessLineByLine(const_cast<char *>(buffer.data()), [&](const char *line) {
+			if (buflast - p <= 1024) bump_size();
+			p += seprintf(p, buflast, "> %s\n", line);
+		});
+	} else {
+		p += seprintf(p, buflast, "No debug config data in savegame\n");
 	}
 
 	/* ShowInfo put output to stderr, but version information should go
@@ -431,6 +441,7 @@ static void ShutdownGame()
 	_game_load_tick_skip_counter = 0;
 	_game_load_time = 0;
 	_loadgame_DBGL_data.clear();
+	_loadgame_DBGC_data.clear();
 }
 
 /**
@@ -777,7 +788,7 @@ int openttd_main(int argc, char *argv[])
 			FiosGetSavegameListCallback(SLO_LOAD, mgo.opt, strrchr(mgo.opt, '.'), title, lastof(title));
 
 			_load_check_data.Clear();
-			if (i == 'K') _load_check_data.want_debug_log_data = true;
+			if (i == 'K') _load_check_data.want_debug_data = true;
 			SaveOrLoadResult res = SaveOrLoad(mgo.opt, SLO_CHECK, DFT_GAME_FILE, SAVE_DIR, false);
 			if (res != SL_OK || _load_check_data.HasErrors()) {
 				fprintf(stderr, "Failed to open savegame\n");
diff --git a/src/os/macosx/crashlog_osx.cpp b/src/os/macosx/crashlog_osx.cpp
index b0b1df6cf2..9beb7597a7 100644
--- a/src/os/macosx/crashlog_osx.cpp
+++ b/src/os/macosx/crashlog_osx.cpp
@@ -401,6 +401,7 @@ public:
 
 		printf("Writing crash savegame...\n");
 		_savegame_DBGL_data = buffer;
+		_save_DBGC_data = true;
 		if (!this->WriteSavegame(filename_save, lastof(filename_save))) {
 			filename_save[0] = '\0';
 			ret = false;
diff --git a/src/os/windows/crashlog_win.cpp b/src/os/windows/crashlog_win.cpp
index a25c60a15b..3054ef8e32 100644
--- a/src/os/windows/crashlog_win.cpp
+++ b/src/os/windows/crashlog_win.cpp
@@ -829,6 +829,7 @@ static INT_PTR CALLBACK CrashDialogFunc(HWND wnd, UINT msg, WPARAM wParam, LPARA
 					ExitProcess(2);
 				case 13: // Emergency save
 					_savegame_DBGL_data = CrashLogWindows::current->crashlog;
+					_save_DBGC_data = true;
 					char filename[MAX_PATH];
 					if (CrashLogWindows::current->WriteSavegame(filename, lastof(filename))) {
 						size_t len = _tcslen(_save_succeeded) + _tcslen(OTTD2FS(filename)) + 1;
@@ -839,6 +840,7 @@ static INT_PTR CALLBACK CrashDialogFunc(HWND wnd, UINT msg, WPARAM wParam, LPARA
 						MessageBox(wnd, _T("Save failed"), _T("Save failed"), MB_ICONINFORMATION);
 					}
 					_savegame_DBGL_data = nullptr;
+					_save_DBGC_data = false;
 					break;
 				case 15: // Expand window to show crash-message
 					_expanded ^= 1;
diff --git a/src/saveload/debug_sl.cpp b/src/saveload/debug_sl.cpp
index ac964aa30c..fca47f5565 100644
--- a/src/saveload/debug_sl.cpp
+++ b/src/saveload/debug_sl.cpp
@@ -38,7 +38,7 @@ static void Load_DBGL()
 
 static void Check_DBGL()
 {
-	if (!_load_check_data.want_debug_log_data) {
+	if (!_load_check_data.want_debug_data) {
 		SlSkipBytes(SlGetFieldLength());
 		return;
 	}
@@ -49,6 +49,44 @@ static void Check_DBGL()
 	}
 }
 
+static void Save_DBGC()
+{
+	extern std::string _config_file_text;
+	const char header[] = "*** openttd.cfg start ***\n";
+	const char footer[] = "*** openttd.cfg end ***\n";
+	if (_save_DBGC_data) {
+		SlSetLength(lengthof(header) + _config_file_text.size() + lengthof(footer) - 2);
+		MemoryDumper::GetCurrent()->CopyBytes(reinterpret_cast<const byte *>(header), lengthof(header) - 1);
+		MemoryDumper::GetCurrent()->CopyBytes(reinterpret_cast<const byte *>(_config_file_text.data()), _config_file_text.size());
+		MemoryDumper::GetCurrent()->CopyBytes(reinterpret_cast<const byte *>(footer), lengthof(footer) - 1);
+	} else {
+		SlSetLength(0);
+	}
+}
+
+static void Load_DBGC()
+{
+	size_t length = SlGetFieldLength();
+	if (length) {
+		_loadgame_DBGC_data.resize(length);
+		ReadBuffer::GetCurrent()->CopyBytes(reinterpret_cast<byte *>(const_cast<char *>(_loadgame_DBGC_data.data())), length);
+	}
+}
+
+static void Check_DBGC()
+{
+	if (!_load_check_data.want_debug_data) {
+		SlSkipBytes(SlGetFieldLength());
+		return;
+	}
+	size_t length = SlGetFieldLength();
+	if (length) {
+		_load_check_data.debug_config_data.resize(length);
+		ReadBuffer::GetCurrent()->CopyBytes(reinterpret_cast<byte *>(const_cast<char *>(_load_check_data.debug_config_data.data())), length);
+	}
+}
+
 extern const ChunkHandler _debug_chunk_handlers[] = {
-	{ 'DBGL', Save_DBGL, Load_DBGL, nullptr, Check_DBGL, CH_RIFF | CH_LAST},
+	{ 'DBGL', Save_DBGL, Load_DBGL, nullptr, Check_DBGL, CH_RIFF},
+	{ 'DBGC', Save_DBGC, Load_DBGC, nullptr, Check_DBGC, CH_RIFF | CH_LAST},
 };
diff --git a/src/saveload/extended_ver_sl.cpp b/src/saveload/extended_ver_sl.cpp
index ab07ca7085..97491f9e18 100644
--- a/src/saveload/extended_ver_sl.cpp
+++ b/src/saveload/extended_ver_sl.cpp
@@ -109,7 +109,7 @@ const SlxiSubChunkInfo _sl_xv_sub_chunk_infos[] = {
 	{ XSLFI_ROAD_LAYOUT_CHANGE_CTR, XSCF_NULL,                1,   1, "road_layout_change_ctr",    nullptr, nullptr, nullptr        },
 	{ XSLFI_TOWN_CARGO_MATRIX,      XSCF_NULL,                1,   1, "town_cargo_matrix",         nullptr, nullptr, nullptr        },
 	{ XSLFI_STATE_CHECKSUM,         XSCF_NULL,                1,   1, "state_checksum",            nullptr, nullptr, nullptr        },
-	{ XSLFI_DEBUG,                  XSCF_IGNORABLE_ALL,       1,   1, "debug",                     nullptr, nullptr, "DBGL"      },
+	{ XSLFI_DEBUG,                  XSCF_IGNORABLE_ALL,       1,   1, "debug",                     nullptr, nullptr, "DBGL,DBGC"    },
 	{ XSLFI_FLOW_STAT_FLAGS,        XSCF_NULL,                1,   1, "flow_stat_flags",           nullptr, nullptr, nullptr        },
 	{ XSLFI_SPEED_RESTRICTION,      XSCF_NULL,                1,   1, "speed_restriction",         nullptr, nullptr, "VESR"         },
 	{ XSLFI_STATION_GOODS_EXTRA,    XSCF_NULL,                1,   1, "station_goods_extra",       nullptr, nullptr, nullptr        },
diff --git a/src/settings.cpp b/src/settings.cpp
index 7e6a9a78c3..a416d4626f 100644
--- a/src/settings.cpp
+++ b/src/settings.cpp
@@ -88,6 +88,7 @@ GameSettings _settings_game;     ///< Game settings of a running game or the sce
 GameSettings _settings_newgame;  ///< Game settings for new games (updated from the intro screen).
 VehicleDefaultSettings _old_vds; ///< Used for loading default vehicles settings from old savegames
 char *_config_file; ///< Configuration file of OpenTTD
+std::string _config_file_text;
 
 typedef std::list<ErrorMessageData> ErrorList;
 static ErrorList _settings_error_list; ///< Errors while loading minimal settings.
@@ -1891,7 +1892,7 @@ static void HandleSettingDescs(IniFile *ini, SettingDescProc *proc, SettingDescP
 static IniFile *IniLoadConfig()
 {
 	IniFile *ini = new IniFile(_list_group_names);
-	ini->LoadFromDisk(_config_file, NO_DIRECTORY);
+	ini->LoadFromDisk(_config_file, NO_DIRECTORY, &_config_file_text);
 	return ini;
 }