I will get straight to the point and save you time by explaining (and hopefully convincing) why you should skip Welcome 2 Karachi for life.
The story about two Indian idiots, Kedar (Bhagnani) and Shammi (Warsi) trying to go to America through seaways using a motor boat and, instead landing in Pakistan sounds like an ideal base for a satire. However, the film starts, fools around, and ends with absurdity as its main and the only ingredient. Since it is a satire one does not pay attention to the story. But to depend on extremely unpleasant jokes and cooked-up situations is like depending on the US to withdraw its troops from Afghanistan.
The performances are not pleasant either. Bhagnani acts pure dumb, but then he does not put much effort into it as acting dumb comes naturally to him. Although, he does play the comedian if we compare him with the lunar eclipse Warsi, who looks dull after his long hiatus from the screen. Gottlieb cannot act, nor can she deliver her dialogs properly. She should stick to brain-numbing dancing.
All said and done, one will enjoy only few chuckles that are caused by random comic situations, which are, for your information, only present in the first half. The second half is worse than Roy (2015) and Kuch Kuch Locha Hai (2015) put together. Plus, I could also sense some exaggeration regarding the depiction of the Pakistani life. Clearly, Pakistan as a country is not as bad as the film showcases it to be.
BOTTOM LINE: Welcome 2 Karachi is a satire film which takes it audience on a 2-hour long ride so that it can show how it is NOT a satire film. Skip for life.
RATING: 1 star out of 10.