FYI, my car also failed due to faded paint back in Nov18.
I have a 2008 white car and the Fahes failed me due to faded paint. Went to the Traffic officer and he checked my car 3 times and finally showed me an area of about 1 square foot that needed paint. He gave me the letter @ Qr.10,00. Went to the garage and they said just polish and lacquer and in 30 mins. I was done. No need for the police letter. Went to Traffic police next day and they said to go back to Fahes. they still failed me. Went to the Traffic police and they directed me to the Fahes Station Supervisor, who came and had a look at my car and did the necessary for me to pass.
Personally, I do not understand how a white car can have faded paint. I feel it is all a sham.
Visit the Super at the Fahes station that check your vehicle and you could save a few QRs. on un-necessary paint work and travel time and wasted time.