July 7 (Reuters) - Shares of Chinese electric vehicle (EV) maker Xpeng Inc (9868.HK) are set to open up 1.8% from their initial public offering (IPO) price in the company"s dual primary listing debut in Hong Kong on Wednesday. The stock is set to open at HK$168 per share, versus the IPO price of HK$165. The percentage jump would compare with a 1.1% fall in the benchmark Hang Seng Index (.HSI) and 1.2% decline in the Hang Seng China Enterprises Index (.HSCE). Xpeng"s New York-listed American Depository Shares (ADS) were up 0.7% late on Tuesday at $44.05 each. One ADS is equivalent to two Hong Kong shares. The company raised $1.8 billion by selling 85 million shares in the deal finalised last week.