Absolutely not. Exporting used cars requires clear proof of foreign currency receipts in USD/EUR (water bill) to be provided to the Chinese foreign exchange administration, customs, and tax authorities for document verification. Cryptocurrencies are considered illegal settlement channels.

From a technical perspective, China's "National VI B (China VI-b)" is one of the strictest emission standards globally, with limits on carbon monoxide, nitrogen oxides, and particulate matter that are even stricter than some of Europe's Euro VI standards. However, the two are not legally recognized by each other, depending on your country's import regulations.

No, this is a serious customs violation. Complete vehicles (HS Code 8703) and auto parts (HS Code 8708, etc.) are subject to completely different import tax rates. Combining them on one invoice could lead to the invoice being returned by customs and may expose you to tax fraud accusations at the destination port.