To estimate the price of the 2019 Infiniti Q50 V6 3.0L Twin Turbo Sensory (Mid) with 159600 km mileage, I considered the following data points: 1. A 2020 Infiniti Q50 V6 3.0L Twin Power Turbo Sensory (Mid) with 85000 km sold for SAR 82000 on 2024-02-22. Given the newer model year and lower mileage, this car would be valued higher than the 2019 model. 2. A 2017 Infiniti Q50 S V6 3.0L Twin Turbo Red Sport 400 (Top+) with 9700 km sold for SAR 95000 on 2023-12-02. This car is a higher trim and has significantly lower mileage, so it would be valued higher. 3. A 2019 Infiniti Q50 V6 3.0L Twin Turbo Sensory (Mid) with 159600 km is listed for SAR 72500. This is a direct comparison and provides a good reference point. 4. A 2019 Infiniti Q50 I4 2.0L Luxe (Base) with 150270 km listed for SAR 75500. This car has a lower engine specification and similar mileage, suggesting the Sensory (Mid) variant should be valued slightly higher. Considering these points, the estimated market price for the 2019 Infiniti Q50 V6 3.0L Twin Turbo Sensory (Mid) is derived.