Headquartered in Munich, Germany and founded in 1866, TÜV SÜD is one of the world's leading technical service organizations. Today, they are represented by more than 17,000 employees across 800 locations, partnering clients wherever they are in the world. The organization works with it's customers to optimize their operations, enable them to access global markets and enhance their competitiveness. Read more about TÜV SÜD from their website by clicking the following link.

The tests were performed on three vehicles were taken from the market by TÜV/SûD Automotive GmbH and were handled only by TÜV/SûD Automotive GmbH staff during the complete project phase. All vehicles were pre-checked prior to the project start regarding general condition, exhaust system, error memory, air filter, oil, service check book etc., including test run. The modifications were conducted according to the instruction manuals. Additional tests regarding other effects, such as material compatibility or long-term effects were not subject to this project.

All measurements were performed in TÜV SÜD Automotive GmbH emission test center in Heimsheim, Germany, according to relevant European emission test regulations.
All endurance tests were carried out on the street in a mix of urban, extra-urban and Autobahn-cycles.

The key results of the TÜV SÜD Test on RVS impact in fuel consumption and emissions were as follows:

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