The Infiniti powertrain warranty covers all components related to the drivability of your vehicle, including the engine, drivetrain, transmission, and related components. When you buy a new Infiniti, you get this coverage for 6 years or 70,000 miles—whichever comes first.
On top of the powertrain warranty, every new Infiniti also comes with a 4-year, 60,000-mile basic warranty, which covers all components of your vehicle.
Note that these warranties only cover damage caused by a manufacturer defect or poor workmanship. It does not cover maintenance or general wear and tear.