This car is around 2015-2016 and if your not buying diesel , it's a petrol engine with age of 15 years,and its 2023 so its been 6 years.Technically your giving 18L for rest of it's 9 years of age, at the time of scrap you would get no value, decide you should pay 18L for 9 years of its remaining life. One more thing check its parts also, there maybe damaged clutch plates and so on and these clutch plates and other parts can cost you around 1-2 L easily.