Arna Kimiai -- the woman who filmed herself driving 122 MPH last summer and who coughed on and attacked an Uber driver last week -- has another vehicular mess on her plate ... she's being sued over a 2019 car crash.
According to legal docs obtained by TMZ ... a woman filed a civil suit against Arna last month, alleging Kimiai made an unsafe turn and struck her vehicle in L.A.
The woman's accusing Arna of negligent driving and "failing to keep a proper lookout for other vehicles," claiming she suffered severe injuries and is dealing with pain and suffering to this day as a result of the wreck.
She's suing Arna for damages, medical expenses and loss of earnings.
As we've reported ... Kimiai's also facing possible criminal charges over the recent altercation with a Bay-area Uber driver, who recorded the incident showing Kimiai and her friend assaulting him.