The left belt is the one that usually fails..a bit more of a p.i.a. to deal with than the passenger side. Drivers side belt drives the, cam, distributor, and oil pump. If it breaks you have a walk or cell phone call to get resucued. Not to worry.. the EA82 is non interferance..you will not trash the engine in case of belt breakage. One other suggestion when you replace the belts is also buy the "micky mouse" gasket for the oil pump. Remove the pump and install the new gasket. This will prevent air sucking in the oil pump which is one reason the EA82 has a reputation for clattering valvetrains. The gasket is not expensive and it is a breeze to replace when doing belts. Buy a new water pump also..spend the extra for a quality one. If these cars have a weakness under the hood it is no reserve on cooling. Ask anyone in Arizona or such area's (I live in New Mexico). EA82's will die quickly if overheated.