I started by looking at the actual selling price of a similar car: a 2016 Porsche Cayenne GTS V6 3.6L AWD Turbocharge with 120600 km sold for AED 100000 on 2024-09-07. This car is very similar in terms of model, year, and condition. Next, I considered the offers accepted by sellers: AED 133000 for a car with 143900 km on 2024-01-08 and AED 115000 for a car with 136000 km on 2024-02-25. These offers are higher than the actual selling price, indicating that the market might be willing to pay more, but actual transactions are lower. I also reviewed the listed prices of similar cars, which ranged from AED 92500 to AED 169750. The most relevant listings were AED 92500 for a car with 138100 km and AED 113000 for a car with 136000 km. Given the car's mileage of 138500 km and average condition, I estimated the price to be slightly lower than the recent selling price but within the range of accepted offers and listed prices.