Arriving in May, the Audi A6 allroad quattro will be powered by the 3-litre TDI engine at launch and be priced around $106,000.
The S3 is expected to arrive in June at around $66,000 with a 2-litre, 188kW TFSI engine and a six-speed manual transmission.
The TT Roadster will be launched in June with a 2-litre TFSI engine and a 3.2-litre V6 quattro, featuring S-tronic transmission. Prices are not yet available.
To reduce weight, the Roadster retains a cloth hood rather than following the trend for folding hard tops.
However, it is now electro-hydraulically powered for hands-free operation, with no need to attach or detach the hood to or from the windscreen rail.
Opening or closing takes 12sec and can be carried out at speeds of up to 30km/h.
Incorporating a heated glass rear window, the new soft top is lighter than before through the use of a new steel and aluminium support framework.
It also claimed to be quieter with an additional layer of soundproofing.
A powered mesh wind deflector is fitted to streamline airflow through the cabin.
The soft top stows smaller than before thanks to a new Z-fold system which stacks the rigid front section of the roof on top of the cloth to form a cover that sits flush with the body and eliminates the need for a tonneau cover.