Vince Neil -- Escaped DUI Conviction in 2007

6/28/2010 6:58 PM PDT

Vince Neil -- Escaped DUI Conviction in 2007

Last night wasn't the first time Mötley Crüe singer Vince Neil was arrested on suspicion of  DUI in Las Vegas -- dude was popped in Sin City back in 2007 ... but you'll never find it on his record.

Las Vegas law enforcement sources confirm Neil was arrested in January 2007 -- after cops noticed Neil performing some erratic maneuvers in his Ferrari.

After Vince smiled for his mug shot (above), Neil managed to work out a deal with prosecutors -- in which he pled no contest to reckless driving in exchange for having the DUI charge dropped.

Now, in the wake of last night's DUI -- the 2007 deal could save Neil from some serious time behind bars ... because according to Nevada state law, people who are convicted of DUI twice in seven years must serve anywhere from 10 days to six months in jail.