Exhaust System Components

Front-wheel-drive models
The exhaust manifold is attached to the cylinder block.

It is followed by the front exhaust pipe, which on the 66 kW engine is a single pipe.

The 4-cylinder engine, 85 kW, and the 5-cylinder engine are fitted with a twin pipe that transitions into a single pipe.

The exhaust system of the 6-cylinder engine is designed completely differently: two front exhaust pipes, each fitted with a catalytic converter.

The catalytic converter with a short pipe section is the next component in the exhaust system of the 4- and 5-cylinder engines. On the 6-cylinder engine, the layout is again different: short pipe sections are located here.

The center (main) muffler and the auxiliary muffler are located further back. The main muffler of the 5- and 6-cylinder models is especially noticeable, as the two mufflers are positioned opposite each other, to the right and left of the vehicle's longitudinal axis.

The auxiliary muffler illustrates the model hierarchy: on the 6-cylinder model the tailpipe is dual.

All-wheel-drive models (quattro)
Up to the catalytic converter, the exhaust systems of front-wheel-drive and all-wheel-drive models are identical. The differences begin after that:

On the 6-cylinder engine, an intermediate Y-pipe joins the two pipes (leading from the catalytic converters) into one.

The main and auxiliary mufflers are connected here. In the original exhaust system, they are rigidly connected to each other by an intermediate pipe section. When repairing, both mufflers can also be replaced separately.

These components are the same for all models. The twin main muffler of the front-wheel-drive models is replaced by a single, larger-volume muffler on the all-wheel-drive models. The auxiliary muffler is fitted with a dual tailpipe.