Why does the Airbus A320 family use 100 and 200?

If the title doesn’t make sense here’s my best way to break it down.

So for example the A318 and A319 both use -100 so A318-100 or A319-100
But why does the A320 and A321 use -200? (A320-200, A321-200)

So what’s the main difference between those numbers? I know they’re different sizes but I’ve always been curious as to what the numbers after the dash mean. Mainly for the A320 Family.

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Quick Google search gave me this;

All A318 and A319s were -100s. Meanwhile, the A320 and A321 jets had both -100 and -200 variants. The -100s had lower MTOWs than their -200 counterparts, which were heavier and had structural modifications to handle increases in fuel capacity.

Airbus has modernized both the A320 and A330 families with “neo” versions- with the three letters standing for “new engine option.” As a result, the older generation has been referred to as ceos, or “current engine options.” Those who want to be more technical may simply refer to the older ceo variants with their three-digit suffixes (-100 or -200).

The neo designation gets further complicated as the A320neo family uses a three-digit suffix followed by an “N.” If an aircraft code ends with NX, then the aircraft has been fitted with Airbus Cabin Flex to maximize capacity (which also means the number of emergency exits is different.)



Oh wow this is great. Thanks @schyllberg : )

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