Trusting the registration test as a condition report
The Tasjeel or ADNOC test is a roadworthiness screen that takes minutes on rollers and gauges. It says nothing about paint depth, gearbox health, AC capacity, timing components or flood history. Treat a fresh pass as the floor requirement and the independent inspection as the actual assessment of what you are buying.
Reading a cleared fault memory as a clean car
An empty fault list with incomplete readiness monitors means the memory was wiped recently, which is the opposite of reassuring. Insist on a re-scan after 50-100 km of driving, or make the deal conditional on it. The absence of history is a finding, not a pass.
Letting evening light close the deal
Forecourt lighting and Ramadan-hour viewings flatter paintwork: colour mismatch, orange peel and filler ripples vanish under artificial light. Do the conversation at night if you must, but make the final decision after the car has been seen washed, in low-angle daylight, ideally with gauge readings across every panel.