To estimate the price of the 2016 Toyota Hilux I4 2.7L GLX Double Cab 2WD (Mid) with 183500 km mileage, I analyzed the listed prices of similar cars. The closest match is a 2016 Toyota Hilux I4 2.7L GLX Double Cab 2WD (Mid) with the same mileage listed for SAR 61000. Other relevant listings include a 2016 GLX 2 Double Cab 2WD (Mid+) with 217000 km listed for SAR 54000, and a 2016 GLX 2WD Short (Base) with 150000 km listed for SAR 49000. Considering the average condition of the target car and the fact that listed prices are generally higher than selling prices, I adjusted the estimate downwards. The 2014 models with similar specs and higher mileage are listed between SAR 36500 and SAR 45500, which also influenced the final estimate.