The reference for locomotives and railcars
Alstom Coradia Polyvalent “Régiolis”
French State Railway B 83500, B 83600, B 84500, B 84800, B 85500, B 85900, Z 31500, Z 51500, Z 54500 and Z 54900
France | 2011 | more than 357 produced
Two four-car, purely electric Z 31500
Two four-car, purely electric Z 31500
Markus Eigenheer

With the Coradia Polyvalent, Alstom offers a multiple unit that is available purely electric or as a dual-powered train with diesel and electric drive. As is typical for the Coradia, the entire drive technology, including the diesel engines, is located on the roof. Various versions are available for use on suburban routes, in regional traffic and in intercity traffic. From the framework contract for 1,000 trains, the SNCF called off 387 units as “Régiolis” until 2020. 17 and 15 trains respectively were also sold to Algeria and Senegal. The trains are now being produced and further developed by CAF. In the future, the diesel engines will be replaced by batteries, and a fuel cell drive is also under development.

Variantelectric four-carelectric six-carbi-mode four-carbi-mode four-car
Builtsince 2011
Axle configB-2-2-2-B B-2-2-2+B-2-2-B B-2-2-2-B B-2-2-2+B-2-2-B 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length234 ft 10 7/8 in360 ft 10 11/16 in234 ft 10 7/8 in360 ft 10 11/16 in
Power sourceelectric - AC/DCelectric - AC/DC + diesel-electric
Electric system15.000 V 16⅔ Hz, 25,000 V 50 Hz, 1,500 V25,000 V 50 Hz, 1,500 V
Continuous power2,280 hp (1,700 kW)3,487 hp (2,600 kW)2,280 hp (1,700 kW)3,487 hp (2,600 kW)
Top speed124 mph99 mph
EngineMAN D 2876LE
Engine type4x 6-cyl. diesel6x 6-Zyl. Diesel
Engine output1,824 hp (1,360 kW)2,736 hp (2,040 kW)
Power Plant
Calculated Values
dual power
long distance
Alstom Coradia
last changed: 03/2023

We use cookies to save the following settings:

  • selected navigation structure
  • selected language
  • preferred units
  • spelling of railway company names

If you refuse the use of cookies, the settings will only be retained for the current session and will be reset to the default values the next time you visit the site.

Display of units

Here you can set the desired unit system for the technical data.

  • Metric: Lengths in meters, weights in tonnes, and volumes in cubic meters
  • Imperial (UK): Lengths in feet/inches, weights in long tons and volumes in imperial gallons
  • Imperial (US): Lengths in feet/inches, weights in pounds, and volumes in US gallons
  • Individual: Depends on the country of origin of each locomotive
Operator names

Here you can set the display of railway company names.

  • Short: Abbreviation or short form of the name
  • Standard: commonly used name, partially translated to English
  • Complete: full name in local language