Brissonneau and Lotz
Defunct French railway engineering and rolling-stock manufacturer that also produced selected automobile bodies and vehicles.
Last updated August 24, 2026
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Overview
Brissonneau and Lotz was a French engineering and manufacturing company best known for railway locomotives, wagons, and other rolling stock. It was founded in Nantes and developed a broad industrial footprint, with principal facilities in the Nantes area and additional factories or workshops elsewhere in France. Although its core business was railway equipment, the company also became involved in automobile manufacturing during the postwar industrial expansion of the 1950s. The company’s railway activities included the production of locomotives and wagons for French transport operators. One of its most significant railway achievements came in 1951, when it constructed the first metro trains in the world equipped with rubber tyres. This work placed Brissonneau and Lotz within the early history of rubber-tyred rapid transit and demonstrated its ability to undertake specialized rolling-stock engineering rather than merely conventional wagon production. During the 1950s, Brissonneau and Lotz diversified into automobile production. In the summer of 1956 it introduced a small, low-volume cabriolet sports car based on the Renault 4CV. The company subsequently expanded its automotive manufacturing role through a contract with Renault. In 1958 and 1959, an automobile facility was converted into a substantially larger production operation to assemble Renault’s Floride, a stylish rear-engined coupé and convertible. The model was later renamed the Renault Caravelle, and production at the Brissonneau and Lotz factory continued until 1968. Brissonneau and Lotz also worked for Opel, manufacturing the body of the Opel GT sports car. Alongside the Renault and Opel programs, it continued lower-volume production of other automobile bodies. These automotive activities made the company an important contract manufacturer and body-building specialist, even though automobiles were not its original or defining business. The company eventually lost its independence. In 1972 it was absorbed into Alstom, then operating under the name Alsthom, and became Alsthom Groupe Brissonneau. The former company’s industrial activities therefore continued within a larger French engineering group rather than as an independent brand. The automobile factory remained active for several more decades, but it closed in 1996 after an industrial dispute. Brissonneau and Lotz is consequently remembered both as a railway-equipment manufacturer with a notable role in metro technology and as a specialist producer and assembler of selected French and European automobiles.
History
Brissonneau and Lotz was established in Nantes as a French industrial engineering company. Its principal historical identity was tied to railway equipment: the company manufactured locomotives, wagons, and other forms of rolling stock, while gradually building or acquiring facilities in multiple parts of France. This geographic expansion reflected the scale and variety of its industrial work and enabled it to serve railway and transport projects beyond its original Nantes base. A particularly important milestone came in 1951, when Brissonneau and Lotz constructed the first metro trains in the world fitted with rubber tyres. Rubber-tyred metro systems required specialized vehicle design and operating equipment, and the project demonstrated the company’s capacity to produce innovative rolling stock for urban transit. The achievement became one of the most distinctive parts of the company’s railway legacy. In the 1950s the company diversified into automobiles. Its first notable automotive venture was a small cabriolet sports car derived from the Renault 4CV, launched in the summer of 1956. The vehicle was produced in limited numbers and represented a move from heavy industrial transport equipment into specialist passenger-car manufacturing. Brissonneau and Lotz’s automotive role expanded considerably through its relationship with Renault. During 1958 and 1959, a relatively small automobile plant was transformed into a much larger production facility after the company received a contract to assemble Renault’s Floride. The Floride was subsequently marketed as the Renault Caravelle, and Brissonneau and Lotz continued manufacturing it at the plant until 1968. The program established the company as a significant contract assembler despite its continuing association with railway engineering. The company also supplied Opel. It manufactured the body for the Opel GT sports car, adding an international program to its Renault work. Other automobile bodies were produced in smaller volumes, suggesting that Brissonneau and Lotz operated as a flexible specialist manufacturer rather than as a mass-market vehicle brand with a large independent model range. In 1972 Brissonneau and Lotz was absorbed into Alstom, then known as Alsthom, and became Alsthom Groupe Brissonneau. This ended its independent corporate existence while preserving its industrial activities within a larger engineering organization. The former automobile production site continued operating after the absorption, but it ultimately closed in 1996 following an industrial dispute. The closure ended the company’s remaining identified automobile manufacturing presence. Its historical importance rests principally on its railway engineering, its pioneering rubber-tyred metro vehicles, and its later specialist role in producing bodies and assembling vehicles for Renault and Opel.
- 1996
Closure of the automobile factory
[1]The company’s automobile factory closed following an industrial dispute, ending its remaining automotive manufacturing operations.
- 1972
Absorption into Alstom
[1]Brissonneau and Lotz was absorbed into Alstom, then called Alsthom, and became Alsthom Groupe Brissonneau.
- 1968
End of Floride and Caravelle production
[1]Production of the Renault Floride, later known as the Renault Caravelle, ended at the Brissonneau and Lotz factory.
- 1958
Renault Floride assembly expansion
[1]The company began transforming its small automobile facility into a larger production operation after receiving a Renault contract connected with the Floride.
- 1956
Entry into automobile production
[1]The company launched a small cabriolet sports car based on the Renault 4CV during the summer, beginning its documented move into low-volume automobile manufacturing.
- 1951
First rubber-tyred metro trains
[1]Brissonneau and Lotz constructed the first metro trains in the world equipped with rubber tyres, marking a major achievement in specialized urban-rail vehicle engineering.
Products and positioning
Industrial engineering and contract manufacturing, combining railway rolling-stock production with specialist automobile body construction and vehicle assembly.
Railway equipment
Railway locomotives and wagons
Railway locomotives and wagons formed the company’s principal industrial product range. Brissonneau and Lotz developed and manufactured rolling stock for railway operations in France, supported by a network of factories and workshops that expanded beyond its Nantes origins. These products established the company as a transport-equipment manufacturer before its later automobile diversification.
Metro rolling stock · 1951
Rubber-tyred metro trains
In 1951 Brissonneau and Lotz constructed the first metro trains in the world to use rubber tyres. The vehicles represented a specialized response to urban-transit requirements and remain the company’s most notable contribution to metro-technology history.
Automobile · 1956
Brissonneau and Lotz 4CV-based cabriolet
This small, low-volume cabriolet sports car was derived from the Renault 4CV and introduced during the summer of 1956. It was an early automotive product for a company whose established business was railway equipment.
Contract vehicle assembly · 1958
Renault Floride and Caravelle
Brissonneau and Lotz assembled Renault’s Floride after expanding its automobile manufacturing facility in 1958 and 1959. The model was later renamed the Renault Caravelle, and assembly at the company’s plant continued through 1968.
Automobile body manufacturing
Opel GT body
The company manufactured the body for Opel’s GT sports car. This program extended Brissonneau and Lotz’s role as a specialist automotive contractor beyond its Renault relationship.
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