French Phrase
Fais un test de vitesse.
Meaning
‘Fais un test de vitesse.’ means ‘Do a speed test.’ It is a short command asking someone to measure how fast something is – most commonly an internet connection or a vehicle’s performance.
When to use
Use this phrase when you suspect a slow internet connection, when you want to check the performance of a new device, or when you’re in a workshop and need to verify a car’s acceleration. It’s informal, so reserve it for friends, family, or colleagues you know well.
✦Grammar Breakdown
Faisuntestdevitesse.
Imperative of faire
‘Fais’ is the second‑person singular imperative of the verb *faire* (to do/make). It is used in informal contexts when speaking to a friend or peer.
Indefinite article ‘un’
‘un’ is the masculine singular indefinite article that matches the noun *test* (masculine).
Prepositional phrase ‘de vitesse’
‘de’ links the noun *test* with the complement *vitesse* (speed), forming a noun‑noun construction meaning ‘speed test’.
Politeness level
If you need a more formal tone, replace *Fais* with *Faites* (second‑person plural/formal).
🗨In Conversation
Ma connexion internet est très lente, tu sais pourquoi ?
My internet connection is very slow, do you know why?
Je vais faire un test de vitesse pour voir le débit.
I’ll do a speed test to see the bandwidth.
✕Common Mistakes
Faire un test de vitesse.
‘Faire’ is infinitive; you need the imperative ‘Fais’ (or ‘Faites’) to give a command.
une test de vitesse.
‘Test’ is masculine, so the correct article is ‘un’, not ‘une’.
Faites un test de vitesse.
‘Faites’ is formal; using it in a casual conversation can sound overly stiff.
↔Alternatives
Effectue un test de vitesse.
Perform a speed test.
Réalise un test de vitesse.
Carry out a speed test.
Lance un test de vitesse.
Launch a speed test.
Cultural Tip
In French the imperative drops the subject pronoun, so *Fais* stands alone. Remember that *test de vitesse* can refer to both internet speed (débit) and vehicle speed, so the context will tell your listener which one you mean. For a polite request to a stranger or a superior, switch to the formal imperative *Faites un test de vitesse.*