T-Pain Wrecks Aston Martin -- Blame It On the O-O-O-Other Driver (PHOTOS)

T-Pain needs a major auto-tune-up after smashing his exotic ride in a multi-car wreck ... TMZ has learned.

The crash happened last week in L.A. -- we're told a purple sedan was turning left at an intersection, and T-Pain ... driving in the opposite direction in his fancy Aston Martin ... went through the intersection and plowed into the sedan.

The impact was so hard it knocked a tire off the sedan and flung it back into a 3rd car at the light.

As for fault ... one witness claims T-Pain jumped the light and went into the intersection early -- but Pain's camp claims the sedan turned after the light turned red.