To estimate the price of the 2016 Infiniti Q50 I4 2.0L Turbocharged Sensory (Mid) with 218000 km mileage, I considered the following data points: 1. 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 variant and has significantly lower mileage, so it is not directly comparable. 2. A 2015 Infiniti Q50 I4 2.0L Sport (Top) with 237000 km was listed for SAR 46500 but delisted on 2024-03-11. 3. A 2015 Infiniti Q50 V6 3.7L Sport (Top) with 154000 km was listed for SAR 42000. 4. A 2017 Infiniti Q50 V6 3.0L Twin Power Turbo Red Sport 400 (Top+) with 139000 km was listed for SAR 75000 but delisted on 2024-04-07. 5. A 2016 Infiniti Q50 I4 2.0L Turbo Luxe (Base) with 115000 km was listed for SAR 58000 but delisted on 2024-04-07. 6. A 2016 Infiniti Q50 I4 2.0L Sensory (Mid) with 89000 km was listed for SAR 43500 but delisted on 2024-02-04. Considering the higher mileage of the target car (218000 km) and its mid variant, I adjusted the price downwards from the delisted price of SAR 43500 for the same variant with lower mileage.