To estimate the price of the 2020 Hyundai Elantra I4 1.6L Smart (Base) with 28000 km mileage, I considered the following data points: 1. A 2022 Hyundai Elantra I4 2.0L GL (Mid) with 63000 km sold for 59000 SAR on 2024-01-28. Adjusting for the year and mileage, the price would be lower for a 2020 model. 2. A 2020 Hyundai Elantra I4 2.0L GLS (Top) with 103000 km sold for 64500 SAR on 2024-04-17. Given the higher trim and mileage, the price for the base model with lower mileage would be less. 3. A 2018 Hyundai Elantra I4 2.0L GLS (Top) with 80000 km sold for 50000 SAR on 2024-05-10. Adjusting for the year and mileage, the price for a 2020 model would be higher. 4. A 2021 Hyundai Elantra I4 2.0L GL (Mid) with 104000 km sold for 47500 SAR on 2024-06-29. Adjusting for the year and mileage, the price for a 2020 model would be higher. 5. A 2019 Hyundai Elantra I4 2.0L GL (Mid) with 128388 km sold for 46000 SAR on 2024-08-15. Adjusting for the year and mileage, the price for a 2020 model would be higher. 6. A 2020 Hyundai Elantra I4 1.6L Smart (Base) with 28000 km is listed for 63000 SAR. Considering the listed price is usually higher than the selling price, the actual value would be lower. 7. Another 2020 Hyundai Elantra I4 2.0L Smart (Base) with 43000 km was listed for 53000 SAR but delisted on 2024-04-19. Adjusting for the engine size and mileage, the price for the 1.6L model would be slightly lower.