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Our Whistleblower System

Complying with statutory regulations and internal rules, and the principles laid down in our Code of Conduct and the Code of Conduct for Business Partners, has top priority at MAN Energy Solutions. The success of our company is based on Integrity and Compliance. To meet this standard, it is important to learn about potential employee or supplier misconduct and to put a stop to it. Therefore, we entrusted the Central Investigation Office of Volkswagen AG to operate an independent, impartial and confidential Whistleblower System on our behalf.
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A key pillar of our Whistleblower System is the principle of procedural fairness. It also guarantees the greatest possible protection for whistleblowers, persons implicated and employees contributing to the investigation of reported misconduct. 

This also includes offering opportunities for anonymous reporting and communication. We assure not to perform any steps in order to identify anonymous whistleblowers, who do not misuse our Whistleblower System. Retaliation of whistleblowers and all persons who contribute to investigations at MAN Energy Solutions will not be tolerated. Persons implicated are presumed innocent until the violation is proven. Investigations will be conducted with the utmost confidentiality. The information will be processed in a fair, fast and protected process.

How do we process your report?

The qualified and experienced colleagues at the Central Investigation Office of Volkswagen AG examine every report for potential misconduct by a Volkswagen Group employee thoroughly and follow it up systematically. First, you will get a confirmation of receipt. The Central Investigation Office then assesses your report. This includes gathering facts particularly from the whistleblower. Only if this initial evaluation shows grounds for suspicion of a violation an investigation by a dedicated Investigating Unit will be started. Afterwards, the results of the investigation will be assessed by the Central Investigation Office and appropriate measures will be recommended. Information about the status* and the outcome of the procedure will be given to you without undue delay. 

Potential violations of the Code of Conduct for Business Partners by suppliers, including serious risks and violations of human rights and environment by direct and indirect suppliers, can also be reported to the Central Investigation Office -  as well as reports requiring otherwise immediate action. The Central Investigation Office will inform the responsible departments, who will process the issue accordingly. This particularly includes taking the necessary measures to minimize or end violations and/or risks. 

Find more information on the procedural principles of the Volkswagen Group Complaints Procedure here.

* The processing time varies depending on the subject of the procedure

Making a report to our Whistleblower System 

The Whistleblower System offers various channels to report potential employee misconduct or violations of the Code of Conduct for business partners in our supply chain that allow a swift review and reaction by our company if necessary. However this does not affect the statutory right to contact designated authorities.

Online Reporting Channel

You have the option of using a web-based communication platform to contact the Central Investigation Office in many languages. This system is confidential and technically secured.

Even if your preferred language is not offered in the reporting channel, you can use any language to submit your report. You can also contact the Central Investigation Office in any language via e-mail or mail.

24/7 Hotline

You can make a report at 365 days, 24 hours, using the international toll-free number: +800 444 46300*

If your local telephone provider does not support the toll-free service, you can call the following chargeable number: +49 5361 946300

*Depending on the country you are calling from it is possible that the international toll-free hotline is not available since some telephone network providers do not support the service. If so, please use the offered chargeable number or your country specific number.


Country specific numbers

 Country  Toll Free Number Local Number




 Slovak Republic




 South Africa








Volkswagen AG has appointed external lawyers to act as Ombudspersons. They advise on the Whistleblower System or ensure that reports from whistleblowers are forwarded anonymously to the Central Investigation Office if desired.

If you want to get in contact with the Ombudsperson you can find their contact details here:


You can get in contact with the Central Investigation Office of Volkswagen AG via e-mail:

Postal address /in person

Postal address:
Volkswagen AG, Central Investigation Office
Box 1717
Berliner Ring 2
38436 Wolfsburg (downtown)

In person:
Please make an appointment in advance by writing an e-mail to:

Do you have further questions or do you need a local contact?

Questions or suggestions for improvement concerning the Whistleblower System can also be addressed to the Central Investigation Office. 

If you have been interviewed in terms of an investigation, you have the possibility to give feedback to the Ombudsperson as independent body. 

Furthermore, our responsible Compliance Officer can also be addressed in all matters of the Whistleblower System via

Further local information