Amanda Bynes hit the road this weekend in her smashed up BMW ... the same car she's accused of driving during at least 2 of the 3 hit-and-runs she's allegedly been involved in this year.
It's unclear when Amanda suffered the front-end damage to the car ... but it could have been in April ... when she allegedly rammed into another car on an L.A. freeway (and fled the scene).
Or the damage could have occurred earlier this month when she allegedly plowed into a car that was stopped at a stop light (and then fled the scene).
Bynes was allegedly in ANOTHER hit-and-run back in May ... but we're told she was driving a Range Rover during that incident.
We reached out to Bynes' people for comment -- so far, no word back.
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