To estimate the price of the 2021 Toyota Hilux I4 2.4L Turbo Charged (Diesel) GL 2 Double Cab 4WD (Diesel) (Mid) with 163000 km mileage, I considered the following data points: 1. The 2020 Toyota Hilux I4 2.7L (Diesel) GL Double Cab 2WD (Diesel) (Base+) with 149000 km listed for SAR 75000. 2. The 2020 Toyota Hilux I4 2.7L GL 2 Double Cab 4WD (Diesel) (Mid) with 237000 km listed for SAR 66000. 3. The 2021 Toyota Hilux I4 2.7L GLX 2 Double Cab 2WD (Mid+) with 30000 km listed for SAR 88000. 4. The 2022 Toyota Hilux I4 2.4L Turbo Charged GL 2WD (Diesel) (Base) with 35000 km listed for SAR 80500. Considering the higher mileage and average condition of the target car, I adjusted the price downwards from these listings. The closest match in terms of variant and mileage is the 2020 model listed for SAR 66000, but with higher mileage. Therefore, I estimated a slightly higher price for the 2021 model with lower mileage.