Legal analysis: Vehicle purchase tax can be refunded by tax authorities. The time requirement is to be returned within three years from the date of discovery.

Upon discovery, the tax authorities shall immediately refund the tax overpaid by taxpayers; If a taxpayer finds out within three years from the date of final settlement of the tax, he may request the tax authorities to refund the overpaid tax and add interest on the bank deposits during the same period, and the tax authorities shall immediately refund it after timely verification; If it involves withdrawing the treasury, it shall be returned in accordance with the provisions of laws and administrative regulations on treasury management.

Legal basis: People's Republic of China (PRC) Tax Collection and Management Law.

Article 1 This Law is formulated with a view to strengthening the administration of tax collection, standardizing tax collection, safeguarding national tax revenue, protecting the legitimate rights and interests of taxpayers and promoting economic and social development.

Article 2 This Law is applicable to the collection and management of various taxes collected by tax authorities according to law.

Article 3 The collection, suspension, reduction, exemption, refund and supplementary payment of taxes shall be carried out in accordance with the law. Where the State Council is authorized by law, it shall be implemented in accordance with the administrative regulations formulated by the State Council.

No organ, unit or individual may, in violation of the provisions of laws and administrative regulations, arbitrarily make decisions on tax collection, suspension, tax reduction, exemption, tax refund, overdue tax and other decisions inconsistent with tax laws and administrative regulations.

Article 4 Units and individuals that are obligated to pay taxes according to laws and administrative regulations are taxpayers.

Units and individuals that have the obligation to withhold and pay taxes according to laws and administrative regulations are withholding agents. Taxpayers and withholding agents must pay taxes, withhold and remit taxes and collect and remit taxes in accordance with the provisions of laws and administrative regulations.