To estimate the price of the 2015 Porsche Cayenne S V6 3.6L Twin Turbo with 253000 km mileage, I first looked at the selling prices of similar cars. The closest match is the 2014 Porsche Cayenne S V8 4.8L Twin Turbo with 187000 km sold for 90000 SAR on 2023-11-25. Given the higher mileage of the target car, I adjusted the price downwards. Another relevant data point is the 2015 Porsche Cayenne GTS V6 3.6L Twin Turbo with 138000 km sold for 110000 SAR on 2024-04-19. Considering the higher mileage of the target car, I adjusted the price downwards. The listed prices of similar cars also provide context: a 2015 Porsche Cayenne S V6 3.6L Twin Turbo with 195000 km is listed for 140000 SAR, and a 2014 Porsche Cayenne S V8 4.8L Twin Turbo with 232000 km is listed for 79000 SAR. Given the higher mileage and the fact that listed prices are generally higher than selling prices, I adjusted the price downwards. Taking all these factors into account, I estimated the market price.