To estimate the price of the 2023 Mazda CX-9 I4 2.5L Turbocharged High+ Premium (Top) with 42000 km mileage, I considered several data points. First, I looked at the selling prices of similar cars. A 2023 Mazda CX-9 I4 2.5L High+ (Mid) with 15000 km sold for 128000 SAR on 2024-02-16. Another 2023 Mazda CX-9 I4 2.5L Grade 1 Premium (Mid+) with 3416 km sold for 156000 SAR on 2024-04-01. A 2022 Mazda CX-9 I4 2.5L Turbocharged High+ Premium (Top) with 52000 km sold for 135000 SAR on 2024-08-12. Considering the mileage and the fact that the car is a 2023 model, I adjusted the price accordingly. I also noted the listed prices of similar cars: one with 42000 km listed for 143500 SAR, another with 27225 km listed for 154000 SAR, and another with 4700 km listed for 145000 SAR. Taking into account the actual selling prices, the listed prices, and the car's condition and mileage, I arrived at a fair market estimate.