TÜV SÜD: Effects of RVS Treatment on Fuel Consumption of Diesel Vehicles

Founded in 1866 and headquartered in Munich, Germany, TÜV SÜD is one of the world’s leading technical testing organizations. The institute works closely with its customers to support access to global markets by improving competitiveness and optimizing their operations.

TÜV SÜD’s tests were conducted on three vehicles that were acquired by the institute itself and were used exclusively by TÜV SÜD personnel throughout the entire testing period. All vehicles were inspected before the start of the tests (including general condition, exhaust system, fault memory, air filter, oils, and service records) and were road-tested. After this, RVS treatments were carried out in accordance with the usage instructions.

All measurements were performed at the TÜV SÜD Automotive GmbH emissions test center in Heimsheim in accordance with European emissions testing regulations. All long-term tests were conducted on public roads under mixed driving conditions, including urban, rural, and motorway driving, by the same designated individuals. The same personnel also carried out the laboratory measurements and testing procedures at every stage of the testing process. This approach was intended to minimize the possibility of human error.

Main test results:

• Fuel consumption and CO₂ emissions decreased in all three tested diesel vehicles of the VAG group compared with the original measurements.

• Based on the results of the three tested vehicles, reductions of up to 5.6% were measured, with an average reduction of 4.3% across the three vehicles.