Group 1 - The article discusses the refund process for vehicle purchase tax when a vehicle is returned due to quality issues, highlighting the case of a customer named Xiao Ming who returned a vehicle and applied for a tax refund [2][3]. - According to the "Vehicle Purchase Tax Law of the People's Republic of China," taxpayers can apply for a refund of the vehicle purchase tax if they return a vehicle to the manufacturer or seller, with the refund amount based on the tax paid and reduced by 10% for each year since payment [3][4]. - The calculation formula for the refund amount is specified as: Refund Amount = Tax Paid × (1 - Years of Use × 10%), ensuring that the refund amount cannot be negative [4]. Group 2 - The article provides a reminder that the information shared is for educational purposes and not an official tax standard, encouraging readers to engage in learning and sharing experiences [8].