To estimate the price of the 2017 Lexus RX350 V6 3.5L Excellence (Mid) with 120,000 km mileage, I first considered the selling price of a similar 2016 model with the same variant and average condition, which sold for SAR 100,000 on 2024-04-05. Given that the car in question is a year newer and has significantly lower mileage, it should be valued higher. Next, I looked at the listed prices of similar cars. A 2017 model with the same variant and mileage is listed for SAR 118,500, which is a good reference point. Another 2017 model with higher mileage (199,600 km) is listed for SAR 85,000, indicating that mileage significantly impacts the price. Considering these data points, I adjusted the price to reflect the lower mileage and the fact that the car is a year newer than the sold 2016 model. The listed prices of other similar cars also support a higher valuation for the 2017 model with lower mileage.