The quality assessment of the actual vehicle pipeline is divided into two levels: the first level is the preliminary actual vehicle pipeline evaluation for the factory trial-produced vehicles. , Eliminate potential quality risks by improving the design; the second level is to carry out DRBTR (Design and ReviewBased on Test Results, design and review according to the test results) vehicle review for the durable road test vehicle, aiming at the pipeline quality exposed by the durable road test. Analyze and evaluate problems, optimize and improve, and eliminate potential risks. According to the vehicle development plan, the pipeline quality review team conducts pipeline quality review on the vehicle at key time points, assesses potential engineering design problems, discovers pipeline problems caused by parts quality and manufacturing reasons, and evaluates parts and manufacturing deviations The impact on pipeline quality ensures that all pipelines of the vehicle meet the requirements of design, function, manufacturing and after-sales.