Inspection and repair: the separation that underpins the trade

It is the question every garage owner considering diversification asks: “why can’t I inspect the vehicles I repair?” The answer fits in one sentence: because a vehicle inspection is only worth something if it has nothing to sell. This separation is not an organisational detail — it is the principle the whole approval scheme is built on.

What the rule says

The approved centre undertakes to carry out no vehicle repair or sales activity, and not to use inspection results for purposes other than those set by the regulations. That undertaking is one of the conditions in light of which the prefect grants approval, under articles R. 323-6 to R. 323-21 of the French highway code.

Two prohibitions therefore stack:

1. An activity incompatibility: no repair, no vehicle trading within the approved scope.
2. A restriction on the use of data: inspection results are intended for the customer and the administration, not to feed commercial prospecting.

The second is often forgotten. Yet it is decisive: it prevents a list of recorded defects from becoming a prospect list for a partner workshop.

The economic problem the rule solves

This architecture answers a classic information-asymmetry problem: the expert knows more than the client, and if their income depends on the diagnosis they give, that diagnosis stops being neutral. Thomas N. Hubbard studied exactly this mechanism in “An Empirical Examination of Moral Hazard in the Vehicle Inspection Market”, published in 1998 in the RAND Journal of Economics (see the study): in the vehicle-inspection market, the decision to fail a vehicle is not independent of the economic relationship between inspector and owner.

French law cuts the knot at the root rather than trying to police it: by banning the combination, it removes any material interest in finding — or not finding — a defect. It is a structural answer, consistent with other occupations where the controller cannot be the operator being controlled, such as property diagnosticians or accredited certification bodies.

What it changes for the business model

An inspection centre sells a regulatory diagnosis, full stop. Three concrete consequences:

Revenue depends on volume, not on basket size. There is no upsell towards repair. Profitability plays out on footfall, location, opening hours and lane occupancy.

The re-inspection is part of the model. It is the normal continuation of the inspection, not a commercial second chance.

The regulatory calendar drives demand. For light vehicles the first inspection falls as the four-year mark after first registration approaches, then every two years. Any scope extension shifts demand in one block: the entry into force of motorcycle inspection on 15 April 2024 was the clearest illustration, as we set out in what category L changes for centres.

A document that counts on the used-car market

This neutrality reaches beyond road safety. When a used vehicle is sold to a private buyer, the seller must hand over a recent inspection report: the document therefore also serves as common ground between a seller and a buyer who do not trust each other.

A report issued by a centre that sells vehicles itself would lose that arbitrating function. It is one more reason why the regulations prohibit not only combining activities, but also using the results for purposes other than those they provide for.

Arrangements to rule out

Refused applications sketch a list of pitfalls:

• Bolting an inspection lane onto an existing workshop, separating the two with a partition wall or a second legal entity. Approval is granted in light of the real situation, not of an org chart.
• Planning a “preferred partnership” with a neighbouring repairer, fed by inspection reports. That is precisely the use of results the regulations forbid.
• Selling used vehicles as an extension of the inspection business.

If your project rests on one of these, redesign it before filing — not after a refusal, which costs several months. The full route is described in our article on opening a vehicle-inspection centre.

Independence has to be proven over time

Approval is not a given: the technical instructions issued by UTAC-OTC apply as soon as they enter into force, monitoring visits check how inspections are actually carried out, and the prefect can suspend or withdraw approval when conditions are no longer met.

For an operator, holding the independence line therefore requires documentary hygiene: traceability of inspection reports, tracking of calibration and maintenance of measuring devices, a requalification plan for inspectors and for the operator — 14 hours every five years for the latter under the central technical body’s referential. These are the same evidence reflexes the other schemes in our overview of French certifications demand.

Take action

No repair, no vehicle sales, no commercial exploitation of results: the independence rule is not a peripheral constraint, it is the heart of the bargain you strike with the State when you become an approved centre. Find the detail of texts and procedures on our vehicle-inspection approval page, along with the free guide to building a compatible project from the start.