In international validation, development engineers and testing and quality staff ensure that the entire vehicle meets expectations in real-world operation in the context of market-specific function validation. They combine their in-depth technical understanding with detailed knowledge of the respective markets to deliver a high quality and first-class customer experience.In international validation, development engineers and testing and quality staff ensure that the entire vehicle meets expectations in real-world operation in the context of market-specific function validation. They combine their in-depth technical understanding with detailed knowledge of the respective markets to deliver a high quality and first-class customer experience.