be careful when you buy from Nissan!!!!

we bought a Nissan with only 28 000 km on the clock (suppose to be a demo) After receiving the car we found a piece under the car broken which needed to be replaced.After the first wash we also found a lot of scratch marks which was buffed out but with every wash it get more obvious.the front vent is also broken. Be careful when you buy second hand !!!!!!!!!!!!!!!!!!!!!