Car is smoking very badly. All of the sudden.

did you replace the thermostat on the engine to
for the smoke it looks electrical see by profections

Hi Tracey P, sounds like you have a TERMINAL problem! If this noise and smoke symptoms came on suddenly while driving, and your performance is impaired, then I would suggest you might well have lost one cylinder dur to component failure. That might be a piston breaking up, a valve dropping or perhaps a combination of the two. I would seriously suggest that it's time to remove the cylinder head/s to check what exactly the problem is.

The blue smoke is OIL, coming from bad seals in the valves. It drains into the cylinders overnight and when you start the car it burns the oil off. This is probably fouling your plugs and if backfiring will fould the carburator. The miss firing is due to the age and most likely the timing of your engine, along with fouled plugs and carb.

What color smoke is it and when is it occuring........is it happening on sytartup and going away, does it seem to worse when you accelerate...or does it get bad when you go down a hill and then suddenly accelerate at the bottom of the hill..????

CHECK THE ENGINE MAY BE BURNING OIL.PISTON RINGS AND LINERS WORN.

Hi:
If the smoke is whitish in color, and just started doing this suddenly, then most likely you have a leaking head gasket, and it is letting coolant get in your cylinder, and possibly oil into your coolant. I am not sure about the noises you are hearing, but you should have your car checked out as soon as possible, or your engine could be permanently damaged, or it could be already.

the valve seals in the motor are worn and letting oil seep into the cylinders when the vehicle sets overnight. when you start it in the morning it burns off the collected oil.. have oil seals replaced if you are parcial to your car....

Blue smoke, if its coming from your exhaust pipe, is from oil burning. Most likely from the engine, so check the oil. A broken piston ring, or bad valve guides can do this.

I agree with your conclusions. I would take it back to the dealer. If it's an Audi dealer and you get no satisfaction call the Audi Customer support folks at 1-800-822-2834

most likely the turbo, if its a darker or bluish smoke.