I started by examining the selling prices of similar cars. The 2018 Audi A8 V6 3.0L Twin Power Turbo with 104000 km sold for 160000 SAR in June 2024. The 2020 Audi A8 L 55 TFSI Quattro V6 3.0L Turbocharged with 47000 km sold for 195000 SAR in June 2024. The 2019 model in question has a larger engine (4.0L) and is a year newer than the 2018 model, but older than the 2020 model. Considering the mileage of 91998 km, which is lower than the 2018 model but higher than the 2020 model, I estimate its value to be between these two selling prices. I also considered the listed prices: a 2019 Audi A8 L Quattro V8 4.0L Twin Turbocharged was listed for 194500 SAR, and a 2018 model was listed for 180500 SAR. Given the condition is average, I adjusted the estimate slightly lower than the midpoint of the selling prices.