To estimate the price of the 2020 Volkswagen Passat I5 2.5L Highline with 21000 km mileage, I considered the following data points: 1) A 2018 Volkswagen Passat I4 2.5L Trendline with 156000 km sold for SAR 41000 in May 2024. Adjusting for the year difference and mileage, the 2020 model with lower mileage and higher trim should be valued higher. 2) A 2020 Volkswagen Passat I5 2.5L Highline with 21000 km is listed for SAR 85000, which is a close match in terms of year, trim, and mileage. 3) Other listings include a 2020 Passat I5 2.5L Trendline with 77500 km listed for SAR 63000 and a 2020 Passat I5 2.5L Highline with 123000 km listed for SAR 77000. Considering the lower mileage and higher trim of the target car, the price should be higher than these listings. Based on these comparisons, I estimated the market price accordingly.