Enhanced performance   |   Exhaust systems   |   Weight reduction   |   Chassis   |   Customizing   |   german  china


Service provider in accordance with § 5 Telemedia Act (TMG):

Dipl. Ing.
Matthias Sievers
Maurener Weg 123
71034 Böblingen

+49. 7031. 688 788 Tel
+49. 178. 740 85 11 Mobil


VAT ID: DE254303014 | Finanzamt Böblingen

Responsible for content: Matthias Sievers

Marketing and website:

about | stein Consulting
Johannes Steiner, Karlsruhe, www.about-stein.de

Disclaimer of warranty - Special terms of business

Although Sievers-Tuning always acts according to its best beliefs and abilities, all vehicle modifications and measures to increase power are made solely on behalf of and on the risk of the purchaser.
With respect to increased engine power or vehicle modifications an individual guarantee has to be stipulated, because a general guarantee can not be given. Liability is therefor excluded for every damage on engine or vehicle in consequence of an engine or vehicle modification.
Liability is also excluded for every subsequent damage.
The driver bears the full responsibility in using a modified vehicle.

Disclaimer - Content of the Online Service

We accept no liability for the topicality, correctness, completeness or quality of the information provided. Any liability claims against us, which refer to material or non-material damage and which may be caused by the usage or non-usage of the information provided or, respectively, by the usage of any incorrect or incomplete information, is generally excluded unless in cases of evidenced willful or gross negligence on our side All offers are non-binding and non-obligatory. We expressly reserve the right to modifications, amendments, or cancellations of the service, in whole or in part, or to the temporary or final discontinuation of this publication without any prior notice.

References and Links

"Where direct or indirect references to other Internet pages ("Links") are concerned, which lie beyond the sphere of responsibility of the author, an obligation to assume liability would take effect exclusively in the case of the author having knowledge of the content, and it having been technically feasible and reasonable for him to have prevented its use in the case of it having unlawful content The author herewith explicitly declares that at the time of setting the link, no unlawful content could be detected on the pages linked. The author shall have no influence whatsoever on the current and future creative design, contents or copyright of the linked pages. Therefore, the author explicitly disassociates himself herewith from all the content of all the linked pages that have been changed after setting the links. This is also true for all links identified within his own website, as well as for postings and outside contributions of every type. The provider of the linked page alone shall be liable for illegal, faulty or incomplete content and in particular for losses resulting from the use or non-use of information provided in this way and not the party who merely makes reference to the particular page through a link"

Copyright and Trademark Rights

We endeavour to follow the copyrights of the used graphics and texts in all publications, to use provided graphics and texts from ourselves or to fall back on graphics free of licence and text. Duplication or utilization of such images and text in other electronic or printed publications shall be prohibited unless we have granted explicit consent.


Matthias Sievers   |   Maurener Weg 123,   71034 Böblingen, Germany   |   Tel: +49(0)7031.688788   |   info@sievers-tuning.com Data protection declaration