Ulm and Neu-Ulm Invest in 37 Mercedes-Benz eCitaro Electric Buses

SWU Accelerates EV Transition with Major Investment in Electric Public Transport

Stadtwerke Ulm / Neu-Ulm (SWU) is ramping up its commitment to zero-emission transit with the purchase of 37 Mercedes-Benz eCitaro electric buses, solidifying its push toward full fleet electrification. The new acquisition includes 15 eCitaro solo buses and 22 articulated eCitaro G units, adding to the 14 articulated eCitaro G models already on the road. The buses will begin operations through 2026, with an option for nine more units in 2027.

Project Scope and Budget

Contract Signed: July 18, 2025
Supplier: Daimler Buses
Number of New Buses: 37 confirmed (+9 optional)
Total Projected Investment: €34.6 million (approx. $37.6 million USD)
Deployment Timeline: Through end of 2026
Optional Units: Additional nine units planned for 2027

This order stems from a Europe-wide competitive tender and reflects Daimler Buses’ growing presence in domestic urban transit markets. By the time all vehicles are delivered, more than half of SWU’s fleet will be battery-electric.

Bus Specifications and Passenger Capacity

Bus Type	Length	Doors	Capacity (Passengers)
eCitaro Solo	12.14 meters	3	Up to 65
eCitaro G Articulated	18.3 meters	4	Up to 143

All new buses are designed for improved accessibility with expanded space for wheelchairs, prams, and walking aids. The upgraded design helps SWU better serve a broader demographic.

Charging and Battery Technology

The buses use the fourth-generation NMC (Nickel-Manganese-Cobalt) batteries, known for high energy density and fast-charging compatibility.

Battery and Charging Highlights:

Battery Pack Output: 111 kWh per pack
Charging Power: Up to 300 kW
Depot Charging Ports: On both sides above the front axle
Pantograph Charging: Enabled via rooftop system
Navigation Support: Roof camera assists with pantograph alignment

The dual-mode charging—depot-based and opportunity charging on route—is tailored to match the demanding terrain and route schedules of the Ulm and Neu-Ulm areas. The combination helps avoid mid-route downtime and maximizes operational uptime.

Digital Integration for Fleet Efficiency

Each bus includes the Digital Services Package from Omniplus, contracted for 12 years. The service suite improves uptime, reduces operating costs, and streamlines maintenance through real-time diagnostics.

Key Features of Digital Fleet Management:

Omniplus On Uptime pro: Real-time vehicle health monitoring
Battery Monitoring System: Maximizes service life and warranty compliance
Integrated Data Packages: Seamless link to third-party fleet management tools
Proactive Diagnostics: Early alerts reduce unplanned service interruptions

This platform-centric approach provides actionable insights to fleet operators and maintenance teams, improving overall fleet reliability and cost transparency.

Safety Technology in Focus

All eCitaro units come equipped with advanced driver assistance systems (ADAS) to protect both passengers and pedestrians.

ADAS Package Includes:

Sideguard Assist 2: Alerts to pedestrians and cyclists in blind spots
Frontguard Assist: Detects obstacles or people directly ahead
Preventive Brake Assist 2: Emergency braking to prevent collisions
Traffic Sign Assist: Uses GPS and cameras to enforce real-time speed compliance

This tech reduces the risk of urban accidents, improves operator confidence, and aligns with broader city safety goals.

Why SWU Chose Daimler Buses

Local Value Retention:

SWU emphasized supporting domestic industry, noting Daimler Buses’ Neu-Ulm production base as a strategic advantage. Local manufacturing boosts supply chain resilience, service proximity, and keeps economic value within Germany.

Proven Track Record:

Daimler’s electric buses are already in use within the SWU network, demonstrating reliable performance and consistency in service delivery.

Timeline for Implementation

Q3 2025: Contract signed and production initiated
Q1 2026 – Q4 2026: Progressive delivery of 37 eCitaro units
2027 (Tentative): Optional 9 units to expand battery-electric share

By 2027, more than half of SWU’s bus fleet will be electric—a notable shift for a regional operator handling over 41 million passengers annually.

Key Takeaways for Industry Observers

Major Investment: $37.6 million USD earmarked for urban electrification
High Utilization Plan: All 37 units in service by end of 2026
Local Sourcing Strategy: Domestic supplier selection favors economic resilience
Modular Charging Model: Dual system (depot + pantograph) increases route viability
Scalable Technology Stack: Futureproofed with digital monitoring and ADAS
Battery Innovation: NMC-4 chemistry combines performance with lifecycle durability

Conclusion

SWU’s aggressive move toward electric transit reaffirms a broader trend in European city transport—electrification with measurable ROI. With proven battery tech, real-time diagnostics, and robust ADAS systems, the Mercedes-Benz eCitaro platform is positioned to serve as a scalable model for other cities considering similar investments.

By opting for a fleet-centric, data-supported, and locally sourced solution, SWU sets a precedent for public transport modernization. The investment doesn’t just replace diesel buses; it builds a system for long-term efficiency and lower emissions—without hype or jargon.