Pendant la contre-visite, on inspecte le châssis et la carrosserie.

Here pendant means during.

So Pendant la contre-visite = During the follow-up inspection.

The difference is:

• pendant + noun = during
  • pendant la contre-visite
• pendant que + clause = while
  • pendant que le mécanicien inspecte la voiture

So in this sentence, pendant is followed by a noun phrase, not a full clause.

La contre-visite is a specific term, often used for a follow-up inspection or re-inspection, especially after a vehicle has failed an earlier inspection and must be checked again.

It is not just any second visit in a general sense. In contexts involving cars, it often refers to the additional inspection after problems were found.

So a learner should treat contre-visite as a set expression.

In this sentence, on is being used in a very common French way to mean something like:

• they
• people
• someone
• we in a general sense
• an impersonal you

So on inspecte le châssis et la carrosserie means something like:

• they inspect the chassis and bodywork
• the chassis and bodywork are inspected
• people inspect the chassis and bodywork

French uses on a lot where English might prefer a passive construction or an unspecified subject.

A key point:

• on is grammatically singular
• so the verb is singular: on inspecte, not on inspectent

Because the subject is on, and on takes third-person singular verb forms.

So:

• on inspecte
• not on inspectent

This is true even when on refers to several people in meaning.

Examples:

• On parle français ici.
• On vérifie les freins.

Even though the meaning may feel plural or impersonal, the grammar stays singular.

French usually uses articles more often than English.

So French says:

• le châssis
• la carrosserie

where English may simply say:

• the chassis and bodywork
• or sometimes just chassis and bodywork depending on style

In French, leaving out the articles here would sound unnatural. With parts of a car being discussed in a specific inspection context, definite articles are the normal choice.

• le châssis = the chassis, the structural frame of the vehicle
• la carrosserie = the bodywork, the outer body of the vehicle

A learner should note that carrosserie usually refers to the physical outer body of the car, not the engine or mechanical systems in general.

Also, in everyday use, carrosserie can sometimes refer to a body shop depending on context, but here it clearly means bodywork.

Châssis has a circumflex accent: â. In modern French, the accent often reflects historical spelling and may slightly affect pronunciation depending on the word and speaker.

A few useful points:

• châssis is pronounced roughly like sha-see
• the final s is not pronounced
• the ch here sounds like sh, not like English ch in chair

So the word is singular even though it looks like it might end in a plural -s.

In fact:

• singular: un châssis
• plural: des châssis

The spelling stays the same in singular and plural, so only the article shows the difference.

Yes, it is completely normal.

The structure is:

• Pendant la contre-visite = time expression at the beginning
• on inspecte = subject + verb
• le châssis et la carrosserie = direct object

This kind of order is very common in French: time expression + subject + verb + object

You could also say:

• On inspecte le châssis et la carrosserie pendant la contre-visite.

That is also correct. Putting Pendant la contre-visite first just emphasizes the time setting.

Yes, very naturally.

Because French uses on so often, English may translate it in different ways depending on style:

• During the follow-up inspection, they inspect the chassis and bodywork.
• During the follow-up inspection, the chassis and bodywork are inspected.

The passive version often sounds more natural in formal English, especially in technical or administrative contexts.

So when learners see on + verb, they should not always translate it literally as one.

Yes: et simply means and, but it links two nouns with their own articles:

• le châssis
• la carrosserie

French usually keeps the article with each noun when they are separate items, especially if they have different genders.

So:

• le châssis et la carrosserie = correct

This is very natural and standard.