Only thirteen of the two-car design for local services, the one that looks like a shortened IC3, were built. They were known at times as an IC2, but now usually referred to as an IR2; all are in use east of the Great Belt. The other IC2 was the little brother of the IC4: all are withdrawn - some never fully entered service - and have either been scrapped or sold. There never was an IC1, but the IC3 was and still is very successful, being the backbone of the Danish intercity network: however, it did have its teething troubles.
Where do you start? The type was riddled with design and manufacturing faults, and never worked properly. One of the biggest problems was that coupling and uncoupling of units was unreliable: this is an important point as portion working is normal in Denmark. Of the 83 built some never fully entered service - one turned up in Libya - and around twenty have been withdrawn.