Consumer reports and every finance guru recommends against buying extended warranties and the emissions 11 year warranty covers quite a bit. See below.
From the settlement:
Parts Covered Under Extended Warranty
The emissions system warranty shall cover the following parts or
systems:
The entire exhaust after treatment system, including the Diesel
Oxidation Catalyst, the Diesel Particulate Filter, the Selective
Catalytic Reduction converter, the dosing injector and other Diesel
Exhaust Fluid system components, the exhaust flap, and all sensors
and actuators
The entire fuel system, including fuel pumps, high pressure fuel rail,
fuel injectors, vibration damper, pressure control valve and all
sensors and actuators
The EGR system, including EGR valves, EGR cooler, EGR filter, EGR
temperature sensor, all related hoses and pipes, and all sensors
and actuators
The turbocharger, including the turbocharger damper
The On-Board Diagnostic (OBD) system, including SCR DEF quality
sensor, and any malfunctions detected by the OBD systems other
than those related to the transmission.
Additionally, the engine long block warranty shall cover the engine
sub-assembly that consists of the assembled block, crankshaft, cylinder
head, camshaft, and valve train
.
The extended emissions warranty includes parts, labor, and applicable
taxes. The extended emissions warranty shall not void or supersede any
existing warranty. Conflicts concerning the warranty are to be resolved
in favor of the consumer.