2008 Audi A4 EGR

The EGR recirculates exhaust gasses back into combustion chamber, this reduces emmissions and also causes engine to run cooler. If malfunctioning it can cause stalling, rough running.

I would be more concerned about oil useage.

If it were me I would insist they give me a new car, or engine.

But let me know, how are you certified, to give such an answer, since we are not able to convince the company..

The dealer will not take the word of any mechanic over the internet.

Even a local ASE mechanic who agrees with you and inspects the engine personally would probably not impress them.

If you have a written warranty, that would take precedence over any testimony.

The warranty is the key, if it warrants the engine against defects and provides for replacement, you would have to meet that criteria.

If they will not replace (or repair) the engine, your only course of action would be legal.

The warranty should define what is covered and under what conditions (more than 1 quart every 1,000 miles) excessive oil consumption should be defined and their obligation to repair it.

If they insist that replacing the EGR will fix the problem, let them replace it, but if oil consumption continues you may have no recourse but to take them to court (if oil consumption as defined in the warranty is excessive).

I am assuming the car is still under factory warranty.

I appreciate your answer, see we had already gone to court, the court says " Since its a mechanical Part, it can go wrong" they have asked us to use the car. my only and primary concern is that, can this cause further damage, as now the car is repaired by them and they have given us the green signal, should this car be driven with free mind, or is there any evidentry proof or theory, that when this happens we should replace the car / engine.

I need an expert comment so that if this car should be replaced, then i can go back to the court and request them of a fair decision.

I would either drive it or get rid of it.

If you drive it:

Monitor all fluid levels especially oil.

Keep a log of oil consumption e.g. 2 quarts every 1000 miles or whatever the case may be, and keep receipts for oil purchased.
Again the rate of consumption that would trigger a repair should be spelled out in the actual warranty or any supplements to it, read the warranty and know what the range is. They may be delibertly vauge on this.
Keep detailed maint, records, oil/filter changes etc.

How much oil does it use?

Generally 1 quart every 1000 miles is considered within the "normal" range. I think it is excessive for a new car, but my opinion would be overridden by the terms of the warranty.

SInce this is a written warranty it is subject to interpertation and if the car performs within the limits of the warranty, no "Expert" testimony will change that, since the obligations of the dealer are spelled out in the warranty.

I would also contact Audi directly by email, phone and lodge a complaint, they may override the dealer for customer relations, or they may do nothing.