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The Z 27500 is a type of dual-voltage electric multiple unit trainset for the French National Railway Company (SNCF) intended to the TER network (French commuter rail).^[2]

The train is the electric variant of Bombardier AGC, often referred to as ZGC. It the most important fleet of all other AGC variants.^[2] It is capable of operating on a 1,500 V DC or 25 kV 50 Hz AC electricity supply.

A total of 211 trainsets have been built by Canadian conglomerate Bombardier at its factory in Crespin (near Valenciennes, France) since 2005. The first set (Z 27503/27504) was placed into regular passenger service on 24 March 2005, for the Basse-Normandie region.

Bombardier vehicle design is articulated using bogies between carriages. The Z 27500 are available in three or four-car unit.^[3] The train can be operated as a multiple-unit control with up to three units, with other Z 27500 or the dual-mode version Diesel/1,500 V DC (B 81500). The train is equipped with 2 pantographs on the intermediate car.

Their capacity offers 160 seats in a three-car unit, 220 in a four-car set. The inter-carriage passages have wide, open gangway connections, limiting bottlenecking.

The Z 27500 from Lorraine region can be operated as a multiple-unit control with the Diesel variant (X 76500 [fr]), specifically equipped with a command to raise the pantograph.^[6]

Whereas the first trains were delivered in their three-car set version (with an intermediate car), several regions later added a second intermediate car, in order to increase their capacity from 160 to 220 seats.^[7]

• 
  Interior, show 2+2 seatings (second class)
• 
  First class interior
• 
  Z 27500 in its three-car set version
• 
  Another three-car set of Z 27500
• 
  Two Z 27500 and one B 82500 being coupled for multiple working
• 
  Bikes storage space on the train

• Ambérieu-en-Bugey – Bourg-en-Bresse – Mâcon
• Annecy – La-Roche-sur-Foron – Annemasse
• Annecy – La-Roche-sur-Foron – Cluses – Saint-Gervais-les-Bains
• Annemasse – Thonon-les-Bains – Évian-les-Bains
• Annemasse – La Roche-sur-Foron – Bonneville – Cluses – Sallanches-Combloux-Megève – Saint-Gervais-les-Bains-Le Fayet
• Annecy – Grenoble – Valence
• Valence – Grenoble – Annecy -Thonon-les-Bains – Évian-les-Bains
• Lyon Perrache – Lyon Part-Dieu – Bourg-en-Bresse
• Lyon Part-Dieu – Culoz – Aix-les-Bains-Le Revard – Annecy
• Lyon Part-Dieu – Culoz – Bellegarde – Genève-Cornavin
• Lyon Part-Dieu – Culoz – Bellegarde – Annemasse – Thonon-les-Bains – Évian-les-Bains
• Lyon Part-Dieu – Culoz – Bellegarde – Annemasse – La Roche-sur-Foron – Bonneville – Cluses – Sallanches-Combloux-Megève – Saint-Gervais-les-Bains-Le Fayet

• Moulins-sur-Allier – Nevers
• Dijon – Laroche – Migennes
• Dijon – Mâcon – Lyon
• Dijon – Besançon – Belfort
• Dijon – Dole – Pontarlier
• Besançon – Mouchard – Lons-le-Saunier
• Lyon – Lons-le-Saunier – Besançon – Belfort
• Belfort – Meroux – Delle

Source:^[8]

• Brest – Morlaix
• Brest – Landerneau
• Rennes – Nantes
• Rennes – Saint-Malo
• Rennes – Saint-Brieuc
• Rennes – Redon
• Redon – Vannes – Lorient

• Tours – Bourges
• Tours – Blois – Orléans
• Tours – Saumur
• Tours – Poitiers
• Orléans – Nevers

• Strasbourg – Saverne – Sarrebourg
• Strasbourg – Sélestat
• Bâle – Mulhouse
• Mulhouse – Belfort
• Mulhouse – Colmar
• Reims – Charleville-Mézières – Sedan
• Reims – Épernay – Château-Thierry
• Nancy – Épinal – Remiremont
• Nancy – Reims
• Nancy – Saint-Dié-des-Vosges
• Nancy – Longwy
• Nancy – Metz
• Nancy – Strasbourg
• Metz – Strasbourg
• Metz – Forbach

• Lisieux – Cherbourg
• Lisieux – Saint-Lô
• Lisieux – Trouville-Deauville
• Elbeuf – Saint-Aubin – Rouen – Yvetot
• Rouen – Mantes-la-Jolie
• Rouen – Amiens
• Rouen – Le Havre

• Cerbère or Portbou – Avignon
• Cerbère or Portbou – Marseille
• Béziers – Neussargues
• Toulouse – Agen
• Toulouse – Brive La Gaillarde
• Toulouse – Narbonne
• Toulouse – Latour de Carol – Enveitg
• Toulouse – Pau

• Nantes station – Les Sables-d’Olonne
• Le Mans station – Le Croisic
• Angers station – Thouars
• Saint-Nazaire station – Redon
• Redon – Nantes
• Nantes – Rennes
• Rennes – Le Mans

Source:^{[8][7][9][10]}

• Runaway train TER Z 27500 between Formerie, Serqueux and Sommery on 20 October 2015. This incident occurred after the train hit 2 cows just after the Formerie station, without causing victims.^[11]
• Accident between a train TER Z 27500 and a stuck trailer truck on 16 October 2019 on the crossing n°70 at Boulzicourt. This accident caused the derailment of the train. 2 passengers were slightly injured as well as the train driver.^[12]

• The LS Models brand makes a model of the Z 27500 in 3 or 4-car set version in HO gauge.^[13]
• Different versions of AGC can be downloaded (free or paid) for Train Simulator game.^[14]

SNCF has announced on 18 March 2021, that 40% of the TER (French commuter rail) fleet will be renovated in the next 10 years, included Z 27500 Class.^[15]

• List of SNCF classes
• Autorail à grande capacité (AGC)
• Media related to SNCF Class Z 27500 at Wikimedia Commons

• Redoutey, Denis (2016). La Vie du Rail (ed.). Le matériel moteur SNCF en 2016 (in French). Paris. p. 400. ISBN 978-2-370620-40-8.{{cite book}}: CS1 maint: location missing publisher (link)
• “450 AGC déjà en service”. Rail-Passion (in French). 137. March 2009.
• “État annuel du matériel moteur SNCF”. Rail-Passion (in French). 139. May 2009.