To estimate the price of the 2019 Hyundai Sonata I4 1.7L (Diesel) Smart (Mid) with 79000 km mileage, I considered the listed prices of similar cars. The 2020 Hyundai Sonata I4 1.6L Turbo Charged Premium (Top+) with 81000 km is listed for SAR 65000. The 2019 Hyundai Sonata I4 2.0L Classic (Mid+) with 97000 km is listed for SAR 58000. The 2018 Hyundai Sonata I4 2.4L Supreme (Top) with 253000 km is listed for SAR 39500. The 2017 Hyundai Sonata I4 1.7L Turbocharged (Diesel) N-Line (Top++) with 291000 km is listed for SAR 45000. Considering the mileage, year, and trim differences, I adjusted the price accordingly. The 2019 model with lower mileage and mid trim should be priced lower than the 2020 Premium but higher than the 2018 Supreme and 2017 N-Line due to its better condition and lower mileage.