These class 592 diesel multiple units are used in traffic from Porto São Bento up along the Douro river to the wine growing regions on upper Douro. The train makes an incredible noise with its engines. It has four big German MAN diesel engines. Picture at Porto São Bento station 11.3.2017 by Ilkka Siissalo.

Another view of a class 592 diesel at São Bento. In addition to the Portuguese CP, also the Spanish RENFE uses this same class of trains. They were built 1981-84 and CP has leased these trains from RENFE. In these two pictures the train is seen as they are now in 2017 after renovation. Picture at Porto São Bento station 11.3.2017 by Ilkka Siissalo.

A class 592 unit as they used to be before renovation. Picture at Régua station 22.6.2012 by Sanna Siissalo.

Another view of a class 592 unit as they used to be before renovation. Picture at Régua station 22.6.2012 by Ilkka Siissalo.

Still a further class 592 unit in 2012. Picture at Régua station 22.6.2012 by Ilkka Siissalo.

This green railbus 0360 nicknamed "watermelon" runs a service from Entroncamento (Portugal) to Badajoz (Spain). These are very old 1668 mm gauge railbuses built by the company Allan in 1954-55 and now rebuilt and refurbished by EMEF 2000-2003. It has now a 252 kW engine and a top speed of 100 km/h.
Picture 11.6.2024 by Markku Salo.

This is not a DMU train, but I put it on the page of DMUs, since it is a replacement of the normal DMU that usually runs on these routes. Normally here would be a class 592 DMU as shown above. But this is a French made class 382 locomotive and some old express train coaches now running instead.
Picture from Porto Sao Bento station 9.6.2024 by Markku Salo.