Originally Posted by
ashill
I'm almost certain that the Airbus equivalent of 737-700 vs 737-800 is A319 vs A320. The A319, A320, and A321 are the "submodels" of the A320 class; there are no submodels of the A319.
Technically there are submodels of the A32X series - A321-100 vs A321-200 for example. But the variations are tiny, there are nowhere near the degree of variance of the 737-700 vs 737-800. Additionally, there is only one A319 model - the A319-100.
Customers can choose to order their A319s in different configurations if they so wish. The A319 can have one or two overwing exits on each side, among other variations in galley configuration, etc.