The car to be estimated is a 2016 Toyota Hilux I4 2.7L S GLX Double Cab 4WD (Top+) with 323,000 km mileage. The closest match in the listed prices is a 2016 Toyota Hilux I4 2.7L S GLX Double Cab 4WD (Top+) with 212,000 km listed for SAR 60,000. Given the higher mileage of the target car, we need to adjust the price downwards. Another similar variant, the 2016 GLX Double Cab 2WD (Mid) with 183,500 km, was listed for SAR 61,000. Considering the target car's higher mileage and average condition, a further reduction is necessary. The 2016 GLX Single Cab 4WD (Mid++) with 289,500 km was listed for SAR 53,000, which provides a lower bound. Taking into account the mileage and condition, a reasonable estimate for the target car is SAR 48,000.