diff --git a/packages/bun/src/sdk.ts b/packages/bun/src/sdk.ts
index 6c56a66aecea..734f331c25d8 100644
--- a/packages/bun/src/sdk.ts
+++ b/packages/bun/src/sdk.ts
@@ -2,6 +2,7 @@ import * as os from 'node:os';
 import {
   applySdkMetadata,
   functionToStringIntegration,
+  hasSpansEnabled,
   inboundFiltersIntegration,
   linkedErrorsIntegration,
   requestDataIntegration,
@@ -11,6 +12,7 @@ import type { NodeClient } from '@sentry/node';
 import {
   consoleIntegration,
   contextLinesIntegration,
+  getAutoPerformanceIntegrations,
   httpIntegration,
   init as initNode,
   modulesIntegration,
@@ -48,6 +50,7 @@ export function getDefaultIntegrations(_options: Options): Integration[] {
     modulesIntegration(),
     // Bun Specific
     bunServerIntegration(),
+    ...(hasSpansEnabled(_options) ? getAutoPerformanceIntegrations() : []),
   ];
 }
 
diff --git a/packages/bun/test/init.test.ts b/packages/bun/test/init.test.ts
new file mode 100644
index 000000000000..45b146cf8ef4
--- /dev/null
+++ b/packages/bun/test/init.test.ts
@@ -0,0 +1,112 @@
+import { type Integration } from '@sentry/core';
+import * as sentryNode from '@sentry/node';
+import type { Mock } from 'bun:test';
+import { afterEach, beforeEach, describe, it, spyOn, mock, expect } from 'bun:test';
+import { getClient, init } from '../src';
+
+const PUBLIC_DSN = 'https://username@domain/123';
+
+class MockIntegration implements Integration {
+  public name: string;
+  public setupOnce: Mock<() => void>;
+  public constructor(name: string) {
+    this.name = name;
+    this.setupOnce = mock(() => undefined);
+  }
+}
+
+describe('init()', () => {
+  let mockAutoPerformanceIntegrations: Mock<() => Integration[]>;
+
+  beforeEach(() => {
+    // @ts-expect-error weird
+    mockAutoPerformanceIntegrations = spyOn(sentryNode, 'getAutoPerformanceIntegrations');
+  });
+
+  afterEach(() => {
+    mockAutoPerformanceIntegrations.mockRestore();
+  });
+
+  describe('integrations', () => {
+    it("doesn't install default integrations if told not to", () => {
+      init({ dsn: PUBLIC_DSN, defaultIntegrations: false });
+
+      const client = getClient();
+
+      expect(client?.getOptions().integrations).toEqual([]);
+
+      expect(mockAutoPerformanceIntegrations).toHaveBeenCalledTimes(0);
+    });
+
+    it('installs merged default integrations, with overrides provided through options', () => {
+      const mockDefaultIntegrations = [
+        new MockIntegration('Some mock integration 2.1'),
+        new MockIntegration('Some mock integration 2.2'),
+      ];
+
+      const mockIntegrations = [
+        new MockIntegration('Some mock integration 2.1'),
+        new MockIntegration('Some mock integration 2.3'),
+      ];
+
+      init({ dsn: PUBLIC_DSN, integrations: mockIntegrations, defaultIntegrations: mockDefaultIntegrations });
+
+      expect(mockDefaultIntegrations[0]?.setupOnce).toHaveBeenCalledTimes(0);
+      expect(mockDefaultIntegrations[1]?.setupOnce).toHaveBeenCalledTimes(1);
+      expect(mockIntegrations[0]?.setupOnce).toHaveBeenCalledTimes(1);
+      expect(mockIntegrations[1]?.setupOnce).toHaveBeenCalledTimes(1);
+      expect(mockAutoPerformanceIntegrations).toHaveBeenCalledTimes(0);
+    });
+
+    it('installs integrations returned from a callback function', () => {
+      const mockDefaultIntegrations = [
+        new MockIntegration('Some mock integration 3.1'),
+        new MockIntegration('Some mock integration 3.2'),
+      ];
+
+      const newIntegration = new MockIntegration('Some mock integration 3.3');
+
+      init({
+        dsn: PUBLIC_DSN,
+        defaultIntegrations: mockDefaultIntegrations,
+        integrations: integrations => {
+          const newIntegrations = [...integrations];
+          newIntegrations[1] = newIntegration;
+          return newIntegrations;
+        },
+      });
+
+      expect(mockDefaultIntegrations[0]?.setupOnce).toHaveBeenCalledTimes(1);
+      expect(mockDefaultIntegrations[1]?.setupOnce).toHaveBeenCalledTimes(0);
+      expect(newIntegration.setupOnce).toHaveBeenCalledTimes(1);
+      expect(mockAutoPerformanceIntegrations).toHaveBeenCalledTimes(0);
+    });
+
+    it('installs performance default instrumentations if tracing is enabled', () => {
+      const autoPerformanceIntegrations = [new MockIntegration('Performance integration')];
+      mockAutoPerformanceIntegrations.mockImplementation(() => autoPerformanceIntegrations);
+
+      const mockIntegrations = [
+        new MockIntegration('Some mock integration 4.1'),
+        new MockIntegration('Some mock integration 4.3'),
+      ];
+
+      init({
+        dsn: PUBLIC_DSN,
+        integrations: mockIntegrations,
+        tracesSampleRate: 1,
+      });
+
+      expect(mockIntegrations[0]?.setupOnce).toHaveBeenCalledTimes(1);
+      expect(mockIntegrations[1]?.setupOnce).toHaveBeenCalledTimes(1);
+      expect(autoPerformanceIntegrations[0]?.setupOnce).toHaveBeenCalledTimes(1);
+      expect(mockAutoPerformanceIntegrations).toHaveBeenCalledTimes(1);
+
+      const integrations = getClient()?.getOptions().integrations;
+      expect(integrations).toBeArray();
+      expect(integrations?.map(({ name }) => name)).toContain('Performance integration');
+      expect(integrations?.map(({ name }) => name)).toContain('Some mock integration 4.1');
+      expect(integrations?.map(({ name }) => name)).toContain('Some mock integration 4.3');
+    });
+  });
+});