Due to the differences between US and EU vehicle legislation it's most unlikely your US spec car came with a CoC as the CoC is an EU requirement. If you contact Honda with the vehicle chassis number they can advise if a CoC was issued and supply you a copy (a fee would be charged).

Absence of a CoC doesn't stop you importing, it just means more hoops to jump through.

The most common mods needed for a US spec vehicle relate to speedometer needing KPH markings, rear fog light (needs one on the left rear, or a pair right and left), and no orange lights other than direction indicators.
Do US vehicles have day running lights? They have been compulsory on EU vehicles since 2011.

There are a number of companies that can assist with vehicle importation, my recommendation would be to go with ACP, they may not be the cheapest, and you have to become a member but they are well regarded.

If, the import of your Honda isn't viable and you have to buy in Europe, vehicles are expensive in PT due to the ISV registration duty. However other EU countries are cheaper and adapted vehicles purchased for the transport of disabled persons are exempt ISV when they are imported.   

Hi Munal,

I agree that shipping the vehicle is probably cost effective. My brother is in a wheelchair and has worked with the various modification companies in the US. You will want to be specific as to the accessibility options your van has. Does it just have a lift? Does it have hand controls as well?

Congratulations on your NIF! Step 2 is your bank account?

As @old-bloke recommended ACP is the best starting point. I think he also makes a compelling argument for not importing your vehicle as he stated "However other EU countries are cheaper and adapted vehicles purchased for the transport of disabled persons are exempt ISV when they are imported. "

I forgot my brother actually owned a van conversion shop in Phoenix many decades ago. You have the receipts from the conversion shop and the details of the manufacturers of the gear installed?

A good starting point for the COC for US cars is the EPA. If they do not have it then you will need to contact Honda's Customer Relations Department in Torrance, CA. Their number is (800) 999-1009. Shannon worked for them prior to our retirement.

You might want to do some further research for the cost to import versus buying in Portugal. We are glad to assist. We did this last year for our vehicle and found we could sell the vehicle in the US for more than we paid for it. 

We browsed cars in Portugal to see what they cost and also found ACP has some very attractive options for vehicles. Then we costed out the shipping and various fees here in Portugal. It was actually cheaper to sell in the US and obtain a different vehicle here in Portugal. That is even more true today with the dollar almost on par with the euro.

The modifications and how that may impact the importation is something ACP can probably answer.

Kind Regards,

Trevor & Shannon