Seamless Mobility: How Flinkster Ensures Reliable Last-Mile Connectivity at Train Stations

Table of Contents

• Company Background
• Problem
• Solution
• Implementation
• Results

Company Background

Flinkster is the car sharing service of Germany’s national railway operator (Deutsche Bahn Connect GmbH) and a trailblazer for shared mobility in Germany. Launched in 2001 as “DB Carsharing,” the service originated from a clear strategic vision: to make rail travel more attractive by offering a complete door-to-door journey. At a time when car sharing consisted almost exclusively of local initiatives, Deutsche Bahn created the first nationwide service.

Today, Flinkster occupies a specialized market niche with a clear focus on train stations. The network comprises nearly 300 of its own vehicles and provides access to around 500 additional partner vehicles via the Flinkster app. In 2025, Flinkster expanded its business area to over 80 German stations, including the addition of Leipzig, Dresden, and Erfurt main stations.

The business model serves both private customers (B2C) and corporate clients (B2B). These corporate clients include the Deutsche Bahn Group itself, whose employees use Flinkster vehicles for various purposes, such as traveling to peripheral construction sites.

Problem

The greatest challenge for Flinkster arises from its decentralized approach across more than 80 locations. Coordinating vehicles distributed throughout the entire country requires a technical infrastructure that functions without on-site staff. A traditional rental counter would contradict the promise of a fast, uncomplicated journey immediately upon train arrival.

In its early days, DB Carsharing solved this problem with physical key boxes before gradually introducing smartphone-based access. However, the increasing digitalization of rental processes brought new technical hurdles.

At major hubs like Stuttgart or Karlsruhe, vehicles are often located in multi-story or underground parking garages. Conventional cellular-based systems reach their limits in these environments. If a customer stands in front of their reserved car after a long train journey and cannot open it due to a dead zone, the promised last-mile connectivity fails.

Solution

The partnership between Flinkster and INVERS is a story of continuous technical evolution. In the beginning, at Potsdamer Platz in December 2001, Flinkster relied on the iBoxx from INVERS. This early telematics generation laid the foundation for automated car sharing at train stations and enabled Flinkster to expand to over 80 locations.

With the CloudBoxx, INVERS has consistently developed this solid foundation further. A decisive advantage over its proven iBoxx is the integrated Bluetooth functionality, which Flinkster customers benefit from today.

The Bluetooth functionality of the CloudBoxx has significantly improved the rental process. Vehicles can now be opened reliably even in underground garages without cellular reception.
Cornelius Kiermasch, Head of Shared Mobility, Flinkster

Beyond reliable connectivity, CloudBoxx provides comprehensive real-time data analysis. Relevant parameters such as state of charge, battery voltage, and immobilizer status flow directly into the fleet management system.

This deep integration allows Flinkster to maintain its vehicles across decentralized locations without manual on-site checks. By automating these monitoring processes, the German operator can ensure that every car is rental-ready at all times.

Implementation

The rollout of CloudBoxx technology marked Flinkster’s transition to a fully digital ecosystem. This transition proceeded smoothly due to advanced configuration options within FleetControl and SmartControl. In October 2024, the car sharing provider discontinued the use of RFID cards in favor of a 100% app-based control system.

Flinkster currently follows a single-brand vehicle strategy, exclusively adding Volkswagen T-Roc and Volkswagen Golf variant models to its fleet. This approach standardizes and simplifies technical processes as well as the hardware installation. It ultimately enables more efficient central management of the decentralized structure.

Results

The results of the long-term optimization strategy are clear:

• 80% Reduction in Technical Interventions:
  Since switching to CloudBoxx with Bluetooth functionality, Flinkster technicians now need to manually unlock a vehicle on-site less than once per month. Previously, this required up to eight interventions monthly.
• Centralized Control Across 80+ Locations:
  Flinkster manages its entire car sharing offering from a single central point. Features such as remote telematics resets and digital key learning save significant time and operational resources.
• Enhanced Last-Mile Connectivity:
  The seamless transition from train to car provides a major advantage for rail travelers. In the future, deeper digital integration, such as direct booking within the DB Navigator app, could further improve the door-to-door journey.

The partnership between Flinkster and INVERS demonstrates how two industry pioneers have become a driving force for the mobility transition. The technical evolution from the first iBoxx to the modern CloudBoxx reflects a shared commitment to constantly redefining and optimizing car sharing.

From a quality standpoint, INVERS technology simply works. If an issue ever comes up, support responds quickly and competently. That’s not a given today.
Cornelius Kiermasch, Head of Shared Mobility, Flinkster

We look back with pride on the past years of collaboration with Flinkster and are delighted to have been supporting the car sharing pioneer with our technology since 2001.

Are you looking for a long-term technology partnership for your car sharing service? Then discover more success stories or contact us now.