diff --git a/packages/flutter_tools/lib/src/localizations/localizations_utils.dart b/packages/flutter_tools/lib/src/localizations/localizations_utils.dart
index 283024010883e..6389b7fbefeac 100644
--- a/packages/flutter_tools/lib/src/localizations/localizations_utils.dart
+++ b/packages/flutter_tools/lib/src/localizations/localizations_utils.dart
@@ -356,7 +356,7 @@ class LocalizationOptions {
        syntheticPackage = syntheticPackage ?? !featureFlags.isExplicitPackageDependenciesEnabled,
        requiredResourceAttributes = requiredResourceAttributes ?? false,
        nullableGetter = nullableGetter ?? true,
-       format = format ?? false,
+       format = format ?? true,
        useEscaping = useEscaping ?? false,
        suppressWarnings = suppressWarnings ?? false,
        relaxSyntax = relaxSyntax ?? false,
diff --git a/packages/flutter_tools/test/commands.shard/hermetic/generate_localizations_test.dart b/packages/flutter_tools/test/commands.shard/hermetic/generate_localizations_test.dart
index d937de7adc547..6619c631fd92b 100644
--- a/packages/flutter_tools/test/commands.shard/hermetic/generate_localizations_test.dart
+++ b/packages/flutter_tools/test/commands.shard/hermetic/generate_localizations_test.dart
@@ -202,7 +202,7 @@ flutter:
         fileSystem: fileSystem,
         logger: logger,
         artifacts: artifacts,
-        processManager: processManager,
+        processManager: FakeProcessManager.any(),
       );
       await createTestCommandRunner(command).run(<String>['gen-l10n']);
 
@@ -241,7 +241,7 @@ flutter:
         fileSystem: fileSystem,
         logger: logger,
         artifacts: artifacts,
-        processManager: processManager,
+        processManager: FakeProcessManager.any(),
       );
       await createTestCommandRunner(command).run(<String>['gen-l10n']);
       expect(command.usage, contains(' If this value is set to false, then '));
@@ -299,6 +299,43 @@ flutter:
     },
   );
 
+  testUsingContext(
+    'dart format is not run when --no-format is passed',
+    () async {
+      final File arbFile = fileSystem.file(fileSystem.path.join('lib', 'l10n', 'app_en.arb'))
+        ..createSync(recursive: true);
+      arbFile.writeAsStringSync('''
+{
+  "helloWorld": "Hello, World!",
+  "@helloWorld": {
+    "description": "Sample description"
+  }
+}''');
+      final File pubspecFile = fileSystem.file('pubspec.yaml')..createSync();
+      pubspecFile.writeAsStringSync(BasicProjectWithFlutterGen().pubspec);
+
+      final GenerateLocalizationsCommand command = GenerateLocalizationsCommand(
+        fileSystem: fileSystem,
+        logger: logger,
+        artifacts: artifacts,
+        processManager: processManager,
+      );
+
+      await createTestCommandRunner(command).run(<String>['gen-l10n', '--no-format']);
+
+      final Directory outputDirectory = fileSystem.directory(fileSystem.path.join('lib', 'l10n'));
+      expect(outputDirectory.existsSync(), true);
+      expect(outputDirectory.childFile('app_localizations_en.dart').existsSync(), true);
+      expect(outputDirectory.childFile('app_localizations.dart').existsSync(), true);
+      expect(processManager, hasNoRemainingExpectations);
+    },
+    overrides: <Type, Generator>{
+      FeatureFlags: enableExplicitPackageDependencies,
+      FileSystem: () => fileSystem,
+      ProcessManager: () => FakeProcessManager.any(),
+    },
+  );
+
   testUsingContext(
     'dart format is run when format: true is passed into l10n.yaml',
     () async {
@@ -348,6 +385,45 @@ format: true
     },
   );
 
+  testUsingContext(
+    'dart format is not running when format: false is passed into l10n.yaml',
+    () async {
+      final File arbFile = fileSystem.file(fileSystem.path.join('lib', 'l10n', 'app_en.arb'))
+        ..createSync(recursive: true);
+      arbFile.writeAsStringSync('''
+{
+  "helloWorld": "Hello, World!",
+  "@helloWorld": {
+    "description": "Sample description"
+  }
+}''');
+      final File configFile = fileSystem.file('l10n.yaml')..createSync();
+      configFile.writeAsStringSync('''
+format: false
+''');
+      final File pubspecFile = fileSystem.file('pubspec.yaml')..createSync();
+      pubspecFile.writeAsStringSync(BasicProjectWithFlutterGen().pubspec);
+      final GenerateLocalizationsCommand command = GenerateLocalizationsCommand(
+        fileSystem: fileSystem,
+        logger: logger,
+        artifacts: artifacts,
+        processManager: processManager,
+      );
+      await createTestCommandRunner(command).run(<String>['gen-l10n']);
+
+      final Directory outputDirectory = fileSystem.directory(fileSystem.path.join('lib', 'l10n'));
+      expect(outputDirectory.existsSync(), true);
+      expect(outputDirectory.childFile('app_localizations_en.dart').existsSync(), true);
+      expect(outputDirectory.childFile('app_localizations.dart').existsSync(), true);
+      expect(processManager, hasNoRemainingExpectations);
+    },
+    overrides: <Type, Generator>{
+      FeatureFlags: enableExplicitPackageDependencies,
+      FileSystem: () => fileSystem,
+      ProcessManager: () => FakeProcessManager.any(),
+    },
+  );
+
   // Regression test for https://github.com/flutter/flutter/issues/119594
   testUsingContext(
     'dart format is working when the untranslated messages file is produced',
diff --git a/packages/flutter_tools/test/general.shard/generate_localizations_test.dart b/packages/flutter_tools/test/general.shard/generate_localizations_test.dart
index fcd5f21e60f00..1a4b8babb7fbf 100644
--- a/packages/flutter_tools/test/general.shard/generate_localizations_test.dart
+++ b/packages/flutter_tools/test/general.shard/generate_localizations_test.dart
@@ -76,7 +76,6 @@ void main() {
   late MemoryFileSystem fs;
   late BufferLogger logger;
   late Artifacts artifacts;
-  late ProcessManager processManager;
   late String defaultL10nPathString;
   late String syntheticPackagePath;
   late String syntheticL10nPackagePath;
@@ -152,7 +151,6 @@ void main() {
     fs = MemoryFileSystem.test();
     logger = BufferLogger.test();
     artifacts = Artifacts.test();
-    processManager = FakeProcessManager.empty();
 
     defaultL10nPathString = fs.path.join('lib', 'l10n');
     syntheticPackagePath = fs.path.join('.dart_tool', 'flutter_gen');
@@ -757,7 +755,7 @@ flutter:
         projectDir: projectDir,
         dependenciesDir: fs.currentDirectory,
         artifacts: artifacts,
-        processManager: processManager,
+        processManager: FakeProcessManager.any(),
       );
     });
 
@@ -780,7 +778,7 @@ flutter:
         projectDir: fs.currentDirectory,
         dependenciesDir: fs.currentDirectory,
         artifacts: artifacts,
-        processManager: processManager,
+        processManager: FakeProcessManager.any(),
       );
     });
 
@@ -809,7 +807,7 @@ flutter:
         projectDir: fs.currentDirectory,
         dependenciesDir: fs.currentDirectory,
         artifacts: artifacts,
-        processManager: processManager,
+        processManager: FakeProcessManager.any(),
       );
 
       expect(generator.inputDirectory.path, '/lib/l10n/');
@@ -880,7 +878,7 @@ flutter:
             projectDir: fs.currentDirectory,
             dependenciesDir: fs.currentDirectory,
             artifacts: artifacts,
-            processManager: processManager,
+            processManager: FakeProcessManager.any(),
           ),
           throwsToolExit(
             message:
@@ -916,7 +914,7 @@ flutter:\r
           projectDir: fs.currentDirectory,
           dependenciesDir: fs.currentDirectory,
           artifacts: artifacts,
-          processManager: processManager,
+          processManager: FakeProcessManager.any(),
         );
         final String content = getInPackageGeneratedFileContent(locale: 'en');
         expect(content, contains('\r\n'));
@@ -940,7 +938,7 @@ flutter:\r
         projectDir: fs.currentDirectory,
         dependenciesDir: fs.currentDirectory,
         artifacts: artifacts,
-        processManager: processManager,
+        processManager: FakeProcessManager.any(),
       );
 
       expect(fs.file('/lib/l10n/app_localizations_en.dart').readAsStringSync(), '''
@@ -973,7 +971,7 @@ class AppLocalizationsEn extends AppLocalizations {
         projectDir: fs.currentDirectory,
         dependenciesDir: fs.currentDirectory,
         artifacts: artifacts,
-        processManager: processManager,
+        processManager: FakeProcessManager.any(),
       );
 
       expect(fs.file('/lib/l10n/app_localizations_en.dart').readAsStringSync(), '''