To estimate the price of the 2019 BMW 420 I4 2.0L Twin Power Turbo Standard sedan with 85834 km mileage, I considered the listed prices of similar cars. The 2019 BMW 420 Sports Line with 50700 km is listed for SAR 109000, the 2021 BMW 420 with 73000 km is listed for SAR 192500, the 2020 BMW 420 with 60000 km is listed for SAR 108500, the 2018 BMW 420 with 56000 km is listed for SAR 113500, and the 2017 BMW 420 with 130000 km is listed for SAR 109000. Given the mileage and year of the target car, I adjusted the price downwards from the 2019 and 2020 models and upwards from the 2017 and 2018 models. The average of the listed prices is around SAR 126500, but considering the higher mileage and the sedan body type, I estimated a slightly lower price.