LeoExpress (Talgo) experience.

[doc7austin]

Honestly, speaking, the exhaust gases of the diesel generator car were filling our Business Class cabin - esp. when we came to a stop in a tunnel.
The Talgo VI product of Leo Express is questionable at best. Why does a electric loco-hauled train need a diesel generator in the first place.

Here are some information behind this link:

A brief summary and details of the source are provided here:

Leo Express Talgo: Inaugural Journey Prague - Bratislava in Business Class

The sources described the inaugural Leo Express Talgo VI journey from Prague to Bratislava to showcase what this new budget rail service has to offer. Despite the low ticket prices, the trip is full of surprises, including a heavily jolting ride, exhaust fumes, and a bizarre delay to refuel the train's diesel generator.

Train: LE 1215
From: Praha hl.n. (Prague), Czech Republic
To: Bratislava hl.st., Slovakia
Train operator: Leo Express
Route via: Kolin, Pardubice, Usti nad Orlici, Olomouc, Prerov, Stare mesto u. Uh. Hrad, Hodonin, Breclav, Kuty
Travel class: Business Class
Price: CZK 509 (approx. EUR 21)
Ticket booked on: le.cz (leoexpress.com)
Passenger carriage type: Talgo VI
Leased from: RENFE
Departure from Praha hl.n.: 06h25 cet
Arrival in Bratislava: 12h07
Travel season: late April 2026
Electric locomotive (Prague-Bratislava) : Vectron MS 193 227-4
Constructed by: Siemens Mobility in 2026
Leased from: Railpool

 

[Gag Halfrunt]

Why does a electric loco-hauled train need a diesel generator in the first place.

Because the locomotive can't supply the right voltage for the train.

 

[doc7austin]

The issue with the generator car:
Our train stopped in a tunnel - and the exhaust fumes were released into car no. 1, where we were sitting.

 

[43096]

Because the locomotive can't supply the right voltage for the train.

Or, more accurately, the train uses a non-standard system.

 

[mountainpixel]

Because the locomotive can't supply the right voltage for the train.

While this is correct, it is absurd at best. It is just as stupid as running with diesel under wires with a locomotive, because you bought the wrong one with only 3kV instead of 25kV AC...

It genuinely took me a couple of minutes to realize I did not misread something when I read "generator car" on a brand-new service on an electrified route.