New meta-study by HTW Saar: HVO100 as the key to massively reducing new CO2 emissions in existing vehicles
New meta-study by HTW Saar: HVO100 as the key to massive CO2 reduction in the vehicle population
Prof. Dr.-Ing. Thomas Heinze (htw saar) publishes comprehensive analysis of the properties, emissions and practical suitability of paraffinic diesel.
May 2026
The current debate on the decarbonization of the transport sector has been given new scientific evidence: a recent meta-study by the Institute Automotive Powertrain (IAP) at htw saar under the direction of Prof. Dr. Thomas Heinze dispels myths surrounding the regenerative fuel HVO100. The study summarizes the results of over 1.5 years of research and evaluates the effects on technology, the environment and existing fleets.
Emission reduction in real operation
Measurements show significant reductions in local pollutants such as nitrogen oxides (NOx) and particulates. HVO100 enables an immediate reduction in new CO2 emissions of up to 96% compared to fossil diesel.
Continue to operate existing systems safely - without conversion costs
For fleet operators and filling station owners, the final version of the study (May 2026) gives a clear all-clear regarding the infrastructure. Based on current statements from the Federal Association for Tank Protection and the DWA, it confirms that existing tank systems that are approved for B7 diesel are suitable for HVO100 without restriction. Expensive conversions or new systems are not required, which makes the immediate switch to a fossil-free fleet economically attractive.
Maximum engine safety thanks to optimized lubricity
A decisive factor for the longevity of modern injection systems is the lubricity of the fuel. The htw saar meta-study proves that HVO100 not only meets the strict requirements of the DIN EN 15940 standard (HFRR value max. 400 µm) through targeted additivation, but often exceeds them. Thanks to its high cetane number and clean combustion, engine deposits are also reduced, which can extend the service life of vehicles.
Technical compatibility & cleanliness
The study shows that HVO (Hydrotreated Vegetable Oil) burns cleaner than fossil diesel due to its chemical composition (kerosenes according to DIN EN 15940). There are no problems with material compatibility in existing tank systems.
Future-proof thanks to full RED III conformity
The decarbonization of transport requires legal planning certainty. The study by Prof. Dr. Heinze explicitly classifies HVO100 in the new EU RED III directive. As the fuel is primarily obtained from certified waste and residual materials, it meets the highest sustainability standards without competing with food. Companies can therefore reliably integrate HVO100 into their GHG quota planning and ESG reporting in order to measurably achieve their climate targets.
Download HVO100 meta study (htw saar, 2026)
Published by the Institute Automotive Powertrain of the Saarland University of Applied Sciences.
Find out more about the research work and laboratory equipment of the Institute for Combustion Engines at htw saar.
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