Registration of modified car

The car doesn’t have a V5 currently as it is registered in Monaco

What is the equivalent to V5 in Monaco and how much indepth info on the car does it contain?

If it had already been registered in France and then you had modded it, you would have had to get it inspected by DREAL to get the cg updated.
If when you take it in for a CT the engine capacity etc of the car doesn’t match what it says on the cg, they won’t even start testing it.
When kids in France mod their cars (growly exhausts, lowered suspension, non standard wheels etc) but they don’t want the hassle of going through DREAL, they keep the OEM parts and put them back on when it has to go in for a CT, then they swap back once it’s passed. I somehow don’t see you wanting to swap all your mods out every couple of years if it still has the cg of a standard model. So it looks like DREAL.
If your current registration certificate has been updated to reflect the mods then maybe you can bypass the dreal test, I don’t know, but I rather doubt it.

another angle… I believe it can be a nightmare re Insurance, if the modifications have not been clearly stated when taking out Insurance… should a claim ever need to be made.

Whichever way this is handled… complete frankness is necessary, even if it ends in a refusal… and that goes for Registration and Insurance…


Well either you declare the mods or you don’t. Your insurers look at the cg and insure the car as registered. You can’t tell the insurers about the mods but not get your cg updated, or vice versa.

Hi Tom,

As Roger says, “backdating” a 911 is very common and as long as the mods are valid may easily be overlooked/ignored so it may well depend on the exact modifications. (Apologies if you already know all this!)

We are planning to immatriculate a '78 SC shortly so would be very interested in how you get on… Bon courage!

Tom, as it is an early 1990’s car, you wont get a CoC, which means you will have to go the DREAL route, this also means reverting it back to absolutely standard condition as it left the factory, this is of course not including the internal mods to the engine/gearbox as they cant/wont check that. After the dreal inspection and the issue of the CG return it to the spec it is now. Otherwise get rid of it or dont buy it.

Tom, another way could be via the FFVE ( and declare it as a classic

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Roger… I am not sure it is a good idea to present one car for Control/Registration/Insurance - and then put the mods in and use it on the road… smacks of deviousness at the very least. :zipper_mouth_face:

and who really wants to be on roads where other drivers might well be driving unchecked/uncontrolled vehicles… :wink::upside_down_face:

Stella, i cannot necessarily condone this course of action, on the other hand the “yes/no” regulations indirectly cause owners to do this. As to who really wants… I have seen so many vehicles modified in some way or another on the roads and i know for certain they are not all official sanctioned mods. Also as i think you will know through your motoring activities, to modify a porsche it isnt exactly B % Q or Halfords quality that goes in there.

It is important that any vehicle is safe on the roads… that is the nub.

Interesting. Can’t turn it back to how it would have been originally unfortunately due to the amount of work carried out.

There must be some loophole because I see modified cars on every car meet I have been to and allot v8 engine swaps just check leboncoin so many hot rods for sale their on French plates

Significant changes: definition
It must be considered (1) that there is a change in the risk for the insurer as soon as a conversion requires the vehicle to be re-approved by the DREAL, i. e. when it is a “significant” change.

Article R.106 of the Highway Code states that “any single vehicle or vehicle component that has undergone significant alterations must be subject to a new type-approval”.

However, according to the indications in Circular No. 84-84 of 24 December 1984 adopted for the application of the Order of 5 November 1984 on the registration of vehicles, only certain minor bodywork modifications (under the conditions provided for in Article 12 (&12-1) of the Order of 19 July 1954) of the unladen weight, the P.T.A.C. or the PTAC/PTRA couple (vehicles approved under several weights) do not require an individual type approval.

As a result, all changes affecting the following characteristics of the vehicle description notice are considered as significant changes:

assembly of the chassis,
number of axles,
wheelbase, track and overhang front and rear,
axle weights and loads,
engine (for replacements other than identical replacements),
transmission of movement,
In short, practically all the amendments affecting the technical information on the vehicle registration document require the vehicle to be presented to DREAL for approval on its own.

One conclusion must be made in all its rigour: the possibilities of modification are extremely limited for those who wish to avoid a transition to DREAL because any initiative outside this framework would expose them to total or partial cancellation of the effects of the vehicle’s insurance policy.

Traffic violations
The potential consequences of a technical modification of your car do not only concern its insurance but also the regularity of your situation with regard to the rules of registration and circulation of vehicles which are laid down in the Highway Code.

In particular, driving with a transformed vehicle without new approval by DREAL may constitute several different offences (in particular art. R. 238 and R. 241 of the Highway Code) punishable by fines of up to 5,000 francs.

Translated with (free version)


Thank you @Mark_Rimmer for your informative reply… :relaxed::relaxed:

But how up to date is it? The 5000 Francs fine suggests it’s quite old.
Monaco borders France. Why not get the seller to take is into France and put it through a CT to see what the reaction is. Without any real detail about the ‘modifications’ it’s impossible for anyone on here to give any valuable advice.

Dan this is the route i suggested in an earlier posting. Other than its a porsche 911 there is no other info about the car, so no info about the car then no info how to go about it.

This is from the government web site dated 9th August this year -
Vous devez notamment faire une déclaration si vous effectuez une des transformations suivantes sur votre véhicule :

modification affectant les caractéristiques suivantes de la notice descriptive : puissance, poids et dimensions, essieux, freinage, organes de manœuvre, de direction et de visibilité, énergie, émissions polluantes et nuisances (bruit),
modification du genre du véhicule,
débridage d'une moto effectué par un professionnel, la faisant passer de la catégorie A2 à A (cas du motard qui conduit depuis 2 ans avec un permis A qu'il a obtenu avant ses 24 ans).

The big difference between your post and mine is I’m saying get the seller to do it, don’t do it after you’ve bought a car that might not be possible to register in France. I know of at least one American who shipped a car over from the States then discovered that he couldn’t get it through all the hoops. A costly mistake.

Dan you are right, it isnt known (or at least i didnt find it) that the car wasnt bought yet, i took it that the poster already had the vehicle in question.