Siemens Mireo Plus B for DB Regio: Baden-Württemberg’s Rail Future
Siemens Mobility is delivering 28 new Mireo Plus B **Intercity trains** to DB Regio, offering up to 60% less CO2 emissions. Discover how these **Intercity trains** will revolutionize travel in the Karlsruhe region, starting in 2026.

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Introduction
In November 2024, Siemens Mobility secured a contract worth approximately €200 million to provide 28 four-car Mireo Plus B regional Intercity trains for the state-owned operator of the German state of Baden-Württemberg, Deutsche Bahn (DB Regio). These trains are scheduled to operate on the network in the Karlsruhe region, with deliveries commencing in December 2026.
Contract Details
The contract, valued at about €200 million, encompasses the supply of 28 Mireo Plus B trains. Each train will consist of four cars. The order includes a service agreement for a period of up to 30 years. The trains are intended for operation in the Karlsruhe region, supporting DB Regio’s transport services in Baden-Württemberg.
Technical Specifications
The Mireo Plus B trains are designed as battery-electric multiple units (BEMU), providing a range of up to 200 kilometers when operating on non-electrified routes. These trains are equipped with modern passenger information systems and offer free Wi-Fi. The trains will feature a total of 244 seats per trainset.
Timeline and Deployment
The first trains are expected to be delivered starting December 2026. These trains will be deployed in the Karlsruhe region. The service agreement, included in the contract, spans a duration of up to 30 years, ensuring long-term maintenance and operational support.
Operational Benefits
The Mireo Plus B trains will allow for a reduction in CO2 emissions by up to 60% compared to diesel-powered trains. They will provide seamless transitions between electrified and non-electrified sections of the network, enhancing operational flexibility. The integration of free Wi-Fi and modern passenger information systems aims to improve the passenger experience.
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Conclusion
Siemens Mobility has been awarded a contract by DB Regio to supply 28 Mireo Plus B regional trains. The contract, worth approximately €200 million, includes a service agreement for up to 30 years. These battery-electric trains are scheduled to begin deliveries in December 2026 and will operate in the Karlsruhe region.
Company Summary
Siemens Mobility is a provider of transport solutions.
DB Regio is the state-owned operator of the German state of Baden-Württemberg.
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