That all depends on what you mean by cheap.
I think you are referring to cheapest Brand New Mass production car.
There are many cars, it may well be some car maker in China.
Cheapest Production Car in Pakistan, is Adam Motors, Revo.
Brand New, with 800cc engine. Rs. 279,000.
In India they make Maruti 800, at Indian 215,000 which comes to same as Revo, after you adjust the price difference at 1.3 times.
Really do not know specifically the car price structure in China. The smallest car they make there is Chery QQ. That is selling at 489,000 w/o CNG in Pakistan. That price is after the 60 or 70% duty customs charges here. So, if we discount 60% on 489,000 we can get the price of Chery QQ in China, Lets do that.
So, the Price before 60% duty, (If the duty on 800cc is correct)
comes to Pak Rupees: 305,500.
So, the cheapest in the World seems to be Either the Pakistani Revo or the Indian Made Maruti 800 (Mehran in Pakistan ) at around Pak Rupees: 280,000 or so.
The alif Would also qualify as the cheapest, but many people still categorize that as an alternative to Rickshaw. If they improve the shape of it, and make that into some Mini Jeep, and price is not more than Rs. 200,000 that would be the cheapest mini Jeep of the world. Made in Pakistan.