diff --git a/src/nuxt-vitest/config.ts b/src/nuxt-vitest/config.ts
index 1d6418e2e..19a138f3f 100644
--- a/src/nuxt-vitest/config.ts
+++ b/src/nuxt-vitest/config.ts
@@ -22,9 +22,7 @@ async function startNuxtAndGetViteConfig(
     overrides: defu(
       {
         ssr: false,
-        app: {
-          rootId: 'nuxt-test',
-        },
+        test: true,
       },
       overrides
     ),
@@ -111,6 +109,10 @@ export async function getVitestConfigFromNuxt(
       dir: process.cwd(),
       environmentOptions: {
         ...options.viteConfig.test?.environmentOptions,
+        nuxt: {
+          rootId: options.nuxt.options.app.rootId,
+          ...options.viteConfig.test?.environmentOptions?.nuxt,
+        },
         nuxtRuntimeConfig: options.nuxt.options.runtimeConfig,
       },
       environmentMatchGlobs: [
@@ -166,6 +168,11 @@ declare module 'vitest' {
        */
       url?: string
       overrides?: NuxtConfig
+      /**
+       * The id of the root div to which the app should be mounted. You should also set `app.rootId` to the same value.
+       * @default {nuxt-test}
+       */
+      rootId?: string
     }
   }
 }
diff --git a/src/nuxt-vitest/module.ts b/src/nuxt-vitest/module.ts
index 67c757d53..632773a08 100644
--- a/src/nuxt-vitest/module.ts
+++ b/src/nuxt-vitest/module.ts
@@ -34,6 +34,10 @@ export default defineNuxtModule<NuxtVitestOptions>({
 
     if (!nuxt.options.dev) return
 
+    if (nuxt.options.test && nuxt.options.app.rootId === '__nuxt') {
+      nuxt.options.app.rootId = 'nuxt-test'
+    }
+
     // the nuxt instance is used by a standalone Vitest env, we skip this module
     if (process.env.TEST || process.env.VITE_TEST) return
 
diff --git a/src/vitest-environment-nuxt/index.ts b/src/vitest-environment-nuxt/index.ts
index 905b36fc0..6288b4203 100644
--- a/src/vitest-environment-nuxt/index.ts
+++ b/src/vitest-environment-nuxt/index.ts
@@ -30,7 +30,7 @@ export default <Environment>{
 
     const app = win.document.createElement('div')
     // this is a workaround for a happy-dom bug with ids beginning with _
-    app.id = 'nuxt-test'
+    app.id = environmentOptions.nuxt.rootId
     win.document.body.appendChild(app)
 
     win.IntersectionObserver =
diff --git a/test/fixtures/nuxt-vitest/nuxt.config.ts b/test/fixtures/nuxt-vitest/nuxt.config.ts
index 6e99f9145..760d1432c 100644
--- a/test/fixtures/nuxt-vitest/nuxt.config.ts
+++ b/test/fixtures/nuxt-vitest/nuxt.config.ts
@@ -1,8 +1,5 @@
 // https://v3.nuxtjs.org/api/configuration/nuxt.config
 export default defineNuxtConfig({
-  app: {
-    rootId: 'nuxt-test',
-  },
   modules: [
     '../packages/nuxt-vitest/src/module',
     '@nuxt/devtools',