Powertrain is typically the engine and trans assembly and mounts; water pump/thermostat, driveshaft/axles, bearings, fuel pump, turbocharger, manifolds, and PCM. With the exception of the PCM nothing predominantly electrical.And your reason for believing this isn't a covered under the 5/60k powertrain warranty is?
There are even some operators like Cubican beyond even that at 75k+ mi.
Sponsored