@@ -10,6 +10,7 @@ stats.json
 playground-bun*
 playground-deno*
 playground-node*
+packages/nuxt-cli/test/fixtures/.tmp-*
 packages/nuxi/src/utils/completions-data.ts
 packages/nuxt-cli/src/data/nitro-presets.ts
 packages/nuxt-cli/src/data/templates.ts
@@ -1,12 +1,12 @@
 import { randomUUID } from 'node:crypto'
 import { rm } from 'node:fs/promises'
 import { join } from 'node:path'
-import { fileURLToPath } from 'node:url'
 import { getPort } from 'get-port-please'
 import { describe, expect, it, vi } from 'vitest'
 import { initialize } from '../../src/dev'
+import { createDevFixture } from '../utils'
 
-const fixtureDir = fileURLToPath(new URL('../fixtures/dev', import.meta.url))
+const fixtureDir = await createDevFixture('dev-restart')
 
 describe('dev server reload', () => {
   it('should settle in-flight requests when nuxt reloads', { timeout: 90_000 }, async () => {
 
@@ -4,10 +4,11 @@ import { fileURLToPath } from 'node:url'
 import { getPort } from 'get-port-please'
 import { afterEach, describe, expect, it, vi } from 'vitest'
 import { runCommand } from '../../src'
+import { createDevFixture } from '../utils'
 
 const NEWLINE_RE = /\r?\n/
 
-const fixtureDir = fileURLToPath(new URL('../fixtures/dev', import.meta.url))
+const fixtureDir = await createDevFixture('dev')
 
 const certsDir = fileURLToPath(new URL('../../../../playground/certs', import.meta.url))
 const httpsCert = join(certsDir, 'cert.dummy')
 
@@ -1,3 +1,6 @@
+import { cp, rm, symlink } from 'node:fs/promises'
+import { join, sep } from 'node:path'
+import { fileURLToPath } from 'node:url'
 import { isCI } from 'std-env'
 
 export async function fetchWithPolling(url: string, options: RequestInit = {}, maxAttempts = 10, interval = 100): Promise<Response | null> {
@@ -18,3 +21,24 @@ export async function fetchWithPolling(url: string, options: RequestInit = {}, m
   }
   return response
 }
+
+/**
+ * Clone the shared `dev` fixture into a project private to a single spec file.
+ *
+ * The dev e2e specs each wipe `.nuxt` and take the dev lock inside their
+ * fixture, so pointing more than one of them at `fixtures/dev` makes them race
+ * whenever vitest runs the files in parallel.
+ */
+export async function createDevFixture(name: string): Promise<string> {
+  const source = fileURLToPath(new URL('../fixtures/dev', import.meta.url))
+  const target = fileURLToPath(new URL(`../fixtures/.tmp-${name}`, import.meta.url))
+
+  await rm(target, { recursive: true, force: true })
+  await cp(source, target, {
+    recursive: true,
+    filter: entry => !entry.includes('node_modules') && !entry.includes(`${sep}.nuxt`),
+  })
+  await symlink(join(source, 'node_modules'), join(target, 'node_modules'), 'junction')
+
+  return target
+}