Good day to drive all bme or mechanic I bought for 2 weeks a bmw 7er 740i petrole bj2006 Km 276,000 306 ps according to owned engine or transmission oil varnish has But I was also not sure whether from transmission or engine is that because have bought the car and tracked after the purchase The owner has written in tracked gear loss and has 5000 km more everything in display is written after which I brought short plates and wanted to drive night home In 60km has Gearbox failure got previous owners she doesn’t go up there slowly drove home and took a very long time because I could not drive a few everything 80 km/h now according to bmw gearbox is kaput has to be dived new costs at bmw up to 600€ at a workshop in ffm overhauled up to 550€ and the previous owners wister the gearbox is kaput but did not tell me I don’t know what to do exactly please I need every help from you all please With kind regards