Best grinding class?

Q u o t e:
I think the op means during leveling. And a warlock doesnt have all those abilities from the start iirc.

If you want to levelup while grinding, i'd definatly suggest a hunter. I levelled pretty much all classes to at least lvl40 and the hunter was insane with grinding. You need some arrows/food and a good pet. Though then its by far the fastest imo :)

Shadowpriest gets really good after you get shadowform, and have a good wand.

Warlocks are good too, though imo below hunters, but above priests possibly.

This is very true, Hunters are extremely good at grinding right from the start and they level fast for sure :-)

It should be said though, that pretty much all classes can grind quite well if specced for it, but some classes will have more downtime or will have more expenses when grinding. For an example Hunters will need to purchase ammunition and other classes will have higher repair bills and need to buy more consumables. In some cases downtime can be reduced with gear or in other cases by talents, which means that some classes won’t start to become really efficient at grinding before they have reached a certain level range.

Find a class you like and that suits your play style, and grinding will become easy as pie :-)