4 is the fourth and final studio album by krautrock band Neu!, released in October 1995.

4 "in an act of despair, so he says" in late 1995 as a response to the bootlegs, which Dinger railed against in the liner notes.

4 was issued by the Japanese label Captain Trip Records, without Rother's input, knowledge or consent.

4 exacerbated the disagreements between Rother and Dinger, which prevented an official CD release of the first three Neu!

The 2000 agreement between Rother and Dinger which led to the CD releases on Astralwerks in the U.S. and Grönland Records in the UK and Europe called for Neu!

album", Rother had no objection to fans buying the CD secondhand and would always leave open the possibility that Neu!

In early 2010, Rother announced that he had arrived at an agreement arranged with Dinger's heir, Miki Yui, and had completely remastered the album from original multitrack and master tapes to produce Neu!