How to buy a car (new or second-hand vehicle)
To buy a car in Portugal you must have :
• A proof of portuguese domicile (a rental agreement, proof of purchase of real estate or a resident's card) ;
• A tax number (NIF - número de identificação fiscal);
• An identity document (id card, passport, driving license ...).
If you live in Portugal for more than 6 months a year, you must register your foreign vehicle within 12 months of your installation in the country.
BUY A NEW CAR
Most major car brands presented in Portugal:
  (AlfaRomeo / Fiat/ Lancia)
In each of these websites, you can choose "concessionários" / "ponto(s) de venda", concessions of the brand of your choice near you.
It is the seller who takes care of registering your new car with the portuguese authorities. It can also offer you a maintenance contract for your vehicle.
The seller can help you with insurance. In Portugal it is the car itself which is insured and not the designated drivers, which means you can lend it to your family and friends.
BUY A SECOND-HAND CAR
A. Research/"Pesquisa" Online
Standvirtual's used options are more than many: Cars, Motorcycles, Boats, Commercials or Motorhomes/Autocaravanas
AutoPT promise "a visit to the best stands in the country" through a single visit to their website.
Website of the specialized magazine "Auto Compra e Venda". In this portal you can find several used vehicles through the search tool and also the stands that are closer to your area of residence.
With 13 years of experience in the market, Auto Sapo is dedicated to selling used cars online. It is one of the largest in the country
It is the new online stand for new and used certified cars.
Prices, features and equipment of new vehicles on sale in Portugal from the magazine "Guia do Automovel". All about cars.
Note: I do not recommend other sites such as OLX, CustoJusto,... (see section C)
B. Used cars sold by Stands/"Concessionários"
In Portugal it is common to buy used car in stands. The bigger the stand, the more likely it is to have a wide variety of second-hand cars for sale. Legally, all must provide a guarantee (1 or 2 years), thus this option is one of the most reliable and safe.
eg.
(...)
C. Second-hand cars sold by private individuals
One of the main reasons people are afraid to buy a used car from an individual is the risk associated with this type of transaction. Therefore, before arriving at the appointment to see the car, you must have already asked the seller a number of questions about the vehicle. Ask about the maintenance history, the number of kilometers and, most importantly, the general condition of the car.
In Used cars ("usado") / Second-hand ("segunda mão") you have to pay careful attention to the documents presented by the seller especially when it is an individual. Make sure that the identification number indicated on the chassis corresponds to the number of the "documento único automóvel" / gray card.
The "documento único automóvel" booklet and the registration of the property are fundamental. We must make sure that everything is ok.
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Network of websites for English-speakers moving or living abroad in Portugal
For " Car Dealers: Sales New & Used " in Lisbon & Algarve, I've found this in english, which seems to me reasonably good to start other searches, and most of the links are updated.
Categories:
. Auto Spares, Parts & Accessories
. Bike Hire, Scooter & Cycle Rental
. Cars, Bikes & Driving
. Car Dealers: Sales New & Used
. Car Hire & Vehicle Rental
. Driving Schools, Instructors & Lessons
. Motor Service, Repairs & Restoration
. Motorbike & Scooter Sales & Service
. Taxis, Shuttle, Transfers & Minibus
How to drive in Portugal
Dating in Portugal
Phones and Internet in Portugal
The Portuguese lifestyle
Work visas in Portugal
Renting options in Porto
Working in Lisbon
Healthcare for the elderly in Portugal
