** HK shares of Li Auto 2015.HK rise 5.5% to HK$106.8; set for biggest one-day pct gain since July 17
** Stock hits highest since July 30
** Chinese EV maker to combine three variants of its i8 electric SUV into single version, priced at 339,800 yuan ($47,300), it said on Thursday
** Co launched 6-seater Li i8, its second pure electric model, on July 29 in 321,800-369,800 yuan range
** Earlier, Citi said Li i8 priced higher than expected
** YTD, HK shares gain 10.5%
(Reporting by Donny Kwok)
((donny.kwok@thomsonreuters.com))