[brunnsbe]

I've lived in Aarhus and I was quite surprised how small part of Denmark's rail network is electrified, it’s only 642 km of 2560 km (https://en.wikipedia.org/wiki/Rail_transport_in_Denmark), so almost all long-distance trains run on diesel which is quite remarkable in a country that otherwise has a very green view on the environment.

Most of the long-distance trains are of model IC4, the delivery of these trains took ages and one of the missing trains was found in Libya, Italy’s former prime minister Silvio Berlusconi had given it as a gift to the Libyan dictator Muammar Gadaffi (http://cphpost.dk/news/international/ic4-train-a-gift-from-b...).

[Svip]

The success of the IC3 from the 1980s lead politicians in the 1990s to decide not to electrify the tracks, but instead count on diesel, and so the IC4 project was initiated. It was a bad decision then, particularly because the IC4 project was vastly different than the IC3 project. So one could not count on it having the same success.

It's a worse decision in retrospect. Fortunately, though, both the former and the current government agree that the tracks need to be electrified along all major routes, and that we should purchase electric locomotives that are already rolling in other European countries.

[LeonidasXIV]

There were also articles warning that the IC4 debacle (it has a massive page in the Danish wikipedia, the "IC4 saga") could lead to the bancrupcy of the Danish State Railways, DSB. So yeah, it has been an astounding failure.