How to recognise engine type on a a320?

[darkchump]

Hey ive noticed that the a320 NEO have different subvarients like A320-251n or A320-271n which is powered by LEAP 1A or PW1100G respectively. Does anyone know what are the subvarients of a320 powered by the old CEO engines?

[QA1]

See here: https://www.easa.europa.eu/en/document-library/type-certificates/aircraft-cs-25-cs-22-cs-23-cs-vla-cs-lsa/easaa064-airbus-a318

Download the Type Certificate Data Sheet EASA.A.064 which gives all the info you need.