After a mere c.800 miles use, a constant hissing noise developed from around the above's brake pedal.

The dealer replaced a brake vacuum pipe to no effect and has now diagnosed a fault with the brake booster. They advise that:

1) The booster requires replacement.

2) The replacement will take the best part of a full working week to conduct.

3) The replacement will involve the disruptive removal of a large number of major engine components, to gain access, which I am sure you would agree, one would prefer not to have to inflict upon a brand new, “factory fresh” car.

I am, frankly, bitterly disappointed that such a major (and potentially dangerous) fault has developed given that:

1) The vehicle is brand new - we elected to pay a considerable premium for a new car, manufactured by a company that places great emphasis on the technical quality and safety of its product offerings.

2) We expected that a firm such as Audi would have implemented adequate quality control measures to have mitigated the risks of early failures of brand new, major, safety-critical components.

3) That even if (2) was not the case, one would have expected that following the disastrous consequences upon Toyota’s sales, of publicity surrounding their poor braking system design and quality control, Audi would have doubled its efforts in this area of car systems.

I wondered whether anyone else has experienced similar issues and whether there are any special steps I should take (e.g. request the assistance of Audi UK etc..), given all the above?