Any vehicle that attracts cops because of its very sheisty appearance, usually due to under-maintenance. Cops feel that these vehicles typically contain drugs and/or criminals. These vehicles will typically be within the limits of the laws, but still get pulled over just because of their dilapidated appearance.

Turd Cars typically have these characteristics: no rims, rims that do not match, missing hub caps, no hub caps, fading paint job, missing or torn away tint, shakes when you accelerate, bullet holes, cracked windows, shattered windows, missing windows, or just generally look like shit.
(ex.) The Turd Car Driver: "May I asked why you pulled me over, Officer?

Cop: "Because you have a Turd Car!"
by Jacob Sportsman December 12, 2010
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The sticky frozen sludge that grows six inches of snow, ice, dirt, road salt and debris behind the wheels of your rice burner during the winter months. If you're smart you kick these off in the parking lot before you get home. If you're evil you kick these off on a cold day when your friend is about to drive somewhere, instant speed bump. If you're an idiot you leave them on so they fall off on the highway and people have to dodge them.
After the snow storm there were massive car turds on my VW. I'm saving them for my next case of road rage.
by Phillip K. February 12, 2007
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