New testing methodologies for mechatronic brake systems are designed to address the complex integration of mechanical and electronic components. These methodologies are essential for evaluating performance and safety under varied and highly dynamic conditions. Particularly outdoor vehicle test programs, such as the Großglockner downhill run for brake performance tests, are being replaced by indoor tests using brake dynamometers (road to rig). This context motivated Volvo, Link and IPG Automotive to build a new and innovative brake test system, which provides brake system engineers with unsurpassed flexibility throughout the development process. This contribution illustrates the development of this system and explains the benefits that can be derived from it in terms of brake performance and effectiveness analysis, braking torque estimation and particulate pollution.