That specific 3-2 downshift harshness on the Ghibli is genuinely one of the more common complaints on this generation and the good news is that it is very often a TCU software issue rather than anything mechanical. A proper Maserati specialist with the right diagnostic equipment can check the current software version and tell you within the first appointment whether an update is available for your specific build. Absolutely worth booking a diagnostic before assuming anything more expensive is involved.

The fact that upshifts are smooth and highway cruising is fine while only that one specific downshift is harsh is actually a really positive sign diagnostically because widespread mechanical issues tend to show up across multiple operating conditions rather than being isolated to one transition. Isolated 3-2 harshness under gentle deceleration on a ZF 8HP points strongly toward the adaptive shift logic rather than hardware failure, the transmission is essentially making a poor decision about timing and pressure during that specific shift event. Software updates and TCU relearning procedures address exactly this kind of issue without any physical intervention required. A specialist who explains this distinction when you describe the symptom is demonstrating genuine familiarity with how these units behave rather than defaulting to the expensive solution because it covers all possibilities.

Selling a kidney is almost certainly not necessary for this specific symptom on a Ghibli with otherwise normal transmission behavior and finding someone who knows the ZF 8HP in a Maserati context specifically rather than just general ZF experience is the key to getting an honest answer about what is actually going on. The Sharjah market has grown enough in terms of exotic car expertise that proper Maserati transmission knowledge exists outside the dealer network and the diagnostic cost at a genuine specialist is money well spent before committing to anything more involved. Book the diagnostic, describe the symptom exactly as you have here including that upshifts and highway driving are completely fine, and any technician who actually knows these cars will immediately have a working hypothesis that matches what you are experiencing rather than approaching it as a mystery. That confidence in the initial assessment is usually a reliable indicator that you are talking to the right person.