A fuel with a higher octane rating is less prone to auto-ignition and can withstand a greater rise in temperature during the compression stroke of an internal combustion engine without auto-igniting, thus allowing more power to be extracted from the engine .the 760li boring a powerful petrol engine can run on 91 octane petrol.
No, BMW 7 Series 760Li doesn't come with manual transmission gearbox. It comes with a eight speed automatic transmission gear box. To know more about BMW 7 Series 760Li, kindly visit the below link: -
BMW offers different service packages, with that BMW offers 24x7 roadside assitance, lifetime maintenance and 12 year warranty on body work and 5 year warranty on paint work with 2 year warranty on engine, transmission and all other accessories.