To estimate the price of the 2016 Hyundai Tucson I4 2.0L (Diesel) Premium (Top) with 251609 km mileage, I analyzed the listed prices of similar cars. The closest match is a 2016 Hyundai Tucson I4 2.0L (Diesel) Premium (Top) with the same mileage listed for SAR 50000. Other similar models include a 2018 Hyundai Tucson I4 1.7L Turbocharged (Diesel) Comfort 2WD (Mid) with 247500 km listed for SAR 48000, and a 2018 Hyundai Tucson I4 2.0L (Diesel) Comfort 4WD (Mid+) with 231000 km listed for SAR 50000. Given the higher mileage and older model year of the target car, I adjusted the price downwards. Considering the listed prices and the condition of the car, I estimate the market price to be slightly lower than the closest match.