I bought an used Subaru Impreza from them about 2 months ago... I'm very pleased with the car now that I put about 6,000 km on it.
At the beginning during negotiating the price they were not willing to reduce the price but I noticed the front tires being quite worn, they were replacing them with new ones, same brand.
Later on when I asked for some clarifications on paperwork, Bassam and Margareta were very helpful.
I do recommend Jaz Auto for anyone looking for a used car. They are professional and helpful