Mastic asphalt is characterized by its ease of processability and high resistance at low temperatures. This material is mixed and laid at temperatures of more than 230 ° C. This is resulting in a higher impact on the environment due to the high energy demand in the asphalt mixing plant and an exposure of employees to hazardous fumes and aerosols generated during production. Therefore an important task for the asphalt industry is to reduce these negative impact of mastic asphalt. Today, efforts are made to investigate the temperature reduction potential of various mastic asphalt mixes and to achieve a temperature reduction of 30 ° C or more. With this temperature reduction a significant decrease of the harmful emissions can be achieved. The goal is energy and GHG savings of at least 20%. It should be noted, however, that modifiers, their nature and amount, can affect the performance features of mastic asphalt. The focus of this work is to evaluate the performance of modified mastic asphalt mixes with amide wax additive and rounded aggregates. In the course of this work mastic asphalt mixes (MA11) with different amounts of wax modifier (amide wax), crushed and rounded aggregates are designed and manufactured in an asphalt mixer. Those mixture recipes are based on a study of the temperature reducing methods that are available on the market and on tests on modified binders that were carried out prior to this paper. The performance behavior of these mastic asphalt mixes is examined by a broad range of performance based tests. For the purposes of this work, these tests are divided into performance criteria that deal with the workability, low-temperature behavior and deformation behavior. The test results show that through modifications a good workability of mastic asphalt at reduced temperatures (-50 °C) is still achieveble. That does not affect the low-temperature resistance with still high rutting resistance in the high temperature range.