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Old 20.08.2009, 17:13
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Legality of Car Modification

I'm looking for information (or where I can get) about the legality/proper procedure for modifying my car.

For example, if I wanted to make a major change to the powertrain such as building a custom engine or converting to electric.

Can I "just do it" with no legal ramifications? I know that when I register a car I get taxed on how "big" the engine is in displacement (surprisingly not in efficiency though...) in Fribourg anyways so I'm guessing not.

I've heard somewhere that any modification resulting in more than 20hp the car has to be "re-approved" for use on the roads. Same goes for any changes to the exhaust.

If this is the case, what is the procedure to have a car "re-approved" for use on the roads?

Any info you can provide would be greatly appreciated!!
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Old 20.08.2009, 17:45
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Re: Legality of Car Modification

any changes not attributed to the OEM must be declared and you must have a permission slip for this.

I had a fruity exhaust and alloys on a car with the slips. Same car had a Hirsch-modified ECU and this did not have to have a permission slip. This was a stage 1 tuning from Hirsch Performance, quite a common upgrade for certain cars
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Old 20.08.2009, 17:59
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Re: Legality of Car Modification

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I'm looking for information (or where I can get) about the legality/proper procedure for modifying my car.

For example, if I wanted to make a major change to the powertrain such as building a custom engine or converting to electric.

Can I "just do it" with no legal ramifications? I know that when I register a car I get taxed on how "big" the engine is in displacement (surprisingly not in efficiency though...) in Fribourg anyways so I'm guessing not.

I've heard somewhere that any modification resulting in more than 20hp the car has to be "re-approved" for use on the roads. Same goes for any changes to the exhaust.

If this is the case, what is the procedure to have a car "re-approved" for use on the roads?

Any info you can provide would be greatly appreciated!!
You must immediately take the modifed car to the StrassenVerkehrsAmt (Road Transport Authority) for testing. If the mods are approved, then those will be remarked on the registration certificate.

Even mounting wheel rims that are not "original equipment" requires endorsement.
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Old 20.08.2009, 19:26
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Re: Legality of Car Modification

I have a couple projects I'm thinking of doing...
One is dropping a v8 into a car that currently has an OEM inline four.
The other is getting a kit to convert to electric.

For the v8, the engine itself is anything but original. Custom ECU as well. As there is not an "official" brand on most of the parts I plan on using, does this present an issue? How does one obtain permission for this?

Also, is the 'StrassenVerkehrsAmt' the same thing as the OCN??

Thanks for the replies so far!!
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Old 20.08.2009, 19:38
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Re: Legality of Car Modification

completely off topic

NICE!!!!! sick projects.

I have a karman Ghia in a garage at home completely restored the chassis and body work just waiting to slip a juicy Porsche engine in the back

Damn this placement in switzerland ruining my fun.


keep up the good work.

Back on topic I have no idea about your question.
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Old 20.08.2009, 20:00
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Re: Legality of Car Modification

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I have a karman Ghia in a garage at home completely restored the chassis and body work just waiting to slip a juicy Porsche engine in the back
Pointless: the first bend you come to and you'll go straight on...
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Old 20.08.2009, 22:04
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Re: Legality of Car Modification

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... Also, is the 'StrassenVerkehrsAmt' the same thing as the OCN?? ...
Guess it is the same: "Office de la Circulation ...".
Same place that issues driving licenses, number plates, etc.

The modifications you propose are very extensive and will completely invalidate the original certification. Can result in expensive testing to verify road worthiness. Also you will be challenged to find an insurer!
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Old 20.08.2009, 22:15
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Re: Legality of Car Modification

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Guess it is the same: "Office de la Circulation ...".
Same place that issues driving licenses, number plates, etc.

The modifications you propose are very extensive and will completely invalidate the original certification. Can result in expensive testing to verify road worthiness. Also you will be challenged to find an insurer!
One approach
Do the mods abroad; get the car registered abroad & then do a self-import into Switzerland.
usually importing a modified car is easier than trying to register a car modified in Switzerland
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Old 21.08.2009, 12:10
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Re: Legality of Car Modification

Speak to the guys at the Dynamic Test Center, near Biel :

http://www.dtc-ag.ch
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Old 21.08.2009, 14:16
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Re: Legality of Car Modification

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Speak to the guys at the Dynamic Test Center, near Biel :

http://www.dtc-ag.ch
Thats EXACTLY the kind of place I'm looking for... Their website contains a vast amount of useful information... Thanks alot!!


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One approach
Do the mods abroad; get the car registered abroad & then do a self-import into Switzerland.
usually importing a modified car is easier than trying to register a car modified in Switzerland

I suppose I could always do that as a last resort... From France would be my only option in that direction...
Assuming I legally do the mods and register in France, is it likely that Switzerland would turn down the "import" ?? I have heard of people having problems importing cars (Lamborghini I think) to Switzerland due to not meeting all the correct safety standards, even though the cars were legally registered in Italy.
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Old 21.08.2009, 14:22
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Re: Legality of Car Modification

the Swiss like standard and then like permission to be issued to deviate from standard.

try to work outside this framework? be prepared for failure.

if you manage to make the car too noisy, be prepared for constant problems; I know someone who had a TVR and was always being stopped by the Rozzers as it was too loud.
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Old 21.08.2009, 14:28
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Re: Legality of Car Modification

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Thats EXACTLY the kind of place I'm looking for... Their website contains a vast amount of useful information... Thanks alot!!





I suppose I could always do that as a last resort... From France would be my only option in that direction...
Assuming I legally do the mods and register in France, is it likely that Switzerland would turn down the "import" ?? I have heard of people having problems importing cars (Lamborghini I think) to Switzerland due to not meeting all the correct safety standards, even though the cars were legally registered in Italy.

I don't think this would work, we imported our car recently and the test centre checked everything, even arguing that the body kit wasn't standard (it was) if they spot non oem parts then you have to take them off and replace them.
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Old 21.08.2009, 14:28
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Re: Legality of Car Modification

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the Swiss like standard and then like permission to be issued to deviate from standard.

try to work outside this framework? be prepared for failure.

if you manage to make the car too noisy, be prepared for constant problems; I know someone who had a TVR and was always being stopped by the Rozzers as it was too loud.
Couldn't agree with you more...
Though it really sucks when certain "standards" are about politics rather than safety, technological innovation, or just common sense
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Old 18.07.2017, 17:14
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Re: Legality of Car Modification

Sorry to revive this topic guys, but I guess its better than creating a new one

So, from my understandings on the topic - correct me if Im wrong please - you can:
  • Modifications - You can put whatever to your car as long as its "approved" or "homologated" in Switzerland, what happen to other parts? Can they be Homologated too, or is a straight NO?
  • Engine Swap - Can this even be done?

Also, you modify or add an homologated part to the car, then you go again to the MFK and let them Test your car again with all the new parts?


Cheers!
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Old 18.07.2017, 17:26
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Re: Legality of Car Modification

just read the original request from 2009. haha - not a chance!

best option is to register the car in england (where pretty much anything goes) and go the foreign company registration route. assuming that a car with such modifications wouldn't be a daily driver, this would work fine. cars after 1960 would require returning to the UK to be tested annually though.

italy, germany and france are far more stringent than UK. i don't have experience with other countries but you're likely increasing your chances of getting stopped with plates from any other country than IT,GB,D,F. even if legal, this is a pain.

swapping an almost similar engine may well work if the tester doesn't know much about the car. i have a friend with a 912 engine in a karman ghia that never got noticed when he had the uprated suspension 'tested'.
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Old 18.07.2017, 17:26
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Re: Legality of Car Modification

You can find all in the ASA guidlines (sepcially 1 and 2a)
https://asa.ch/online-bibliothek/richtlinien/
and momrandums (Specially 11, 13, and 16)
https://asa.ch/online-bibliothek/merkblaetter/

(Only available in German, French, and Italian)

In short: With the right paper (which proofs that it is safe and according current standards) or persitence you can do nearly anything.

http://www.youtube.com/watch?v=aQeRX2e3B0U

Problem with another engine from an other make and model: If you have modifications down the line such as other exhaust system they may be no longer approved and you will need to show that you still meet all the regulations with the new engine.

Guidline No. 1 is helpful if you wish do import a modified car as part of your houshold. Much more is possible that way.
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Old 18.07.2017, 17:32
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Re: Legality of Car Modification

Trying to homologate parts yourself is likely to be too expensive, the process is designed for volume manufacturers.
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Old 18.07.2017, 18:29
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Re: Legality of Car Modification

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Sorry to revive this topic guys, but I guess its better than creating a new one

So, from my understandings on the topic - correct me if Im wrong please - you can:
  • Modifications - You can put whatever to your car as long as its "approved" or "homologated" in Switzerland, what happen to other parts? Can they be Homologated too, or is a straight NO?
  • Engine Swap - Can this even be done?

Also, you modify or add an homologated part to the car, then you go again to the MFK and let them Test your car again with all the new parts?


Cheers!
nothings changed since you last asked about it

https://www.englishforum.ch/transpor...exhaust-4.html
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