I started by looking at the selling prices of similar cars. The most relevant data points are: 1) A 2014 Audi A8 V6 3.0L 60 TFSI (Top) with 231500 km sold for 49500 SAR in November 2023. 2) A 2013 Audi A8 V6 3.0L 60 TFSI (Top) with 220000 km sold for 41099 SAR in August 2023. 3) A 2015 Audi A8 V6 3.0L Super Charged 60 TFSI (Top) with 81000 km sold for 89000 SAR in May 2024. Considering the mileage and condition of the target car (223000 km, average condition), I adjusted the price downwards from the higher end of the range. The listed prices of similar cars were also considered: 1) A 2014 Audi A8 V6 3.0L 60 TFSI (Top) with 223000 km listed for 59000 SAR. 2) A 2014 Audi A8 L TFSI Quattro V6 3.0L Turbocharged with 207700 km listed for 65000 SAR. 3) A 2014 Audi A8 L TFSI Quattro V6 3.0L Turbocharged with 267000 km listed for 51000 SAR. These listings are generally higher than actual selling prices. Based on the selling prices and the condition of the target car, I estimated the market price.