As we all know, Audi is planning to introduce quite a broad selection of new performance models. The big issue to be resolved is what engine to put in each one so that they have unique customer appeal, don't cannibalise existing model sales of other ranges, and don't overlap too much so that they end up competing with each other, instead of BMW and Mercedes-Benz.
The key questions are which of these models will offer a V-10, a V-8 or both and which of these will have an additional turbo version. Based on my knowledge of recent discussions within Audi, the current engine configurations being considered are as follows:
R9: V-10 (550 bhp) or V-8 (420 bhp) or both
S8: V-10 (450 bhp)
Q7: V-10 (450 bhp)
RS6: V-10 (550 bhp)
S6: V-10 (450 bhp) or V-8 (420 bhp)
A4 coupe and convertible (possibly called A5): V-10 (450 bhp) or V-8 (420 bhp) or both
RS4 saloon and avant: V-8 (420 bhp)
S4 saloon and avant: V-8 (350 or 380 bhp)
(N.B. all V-8s will soon be FSI to comply with EURO IV emission requirements. All power outputs are in the ball park )
This is clearly an impressive line-up of new performance models. But given that the price of oil is unlikely to come back below $50 a barrell anytime soon and that Formula 1 is returning to V-8 engines, the appeal of V-10s may be shortlived.
The risk for Audi could be an extremely costly investment in an expensive line-up of gas-guzzlers with monstrous performance that don't sell. Consequently, as reported elsewhere, I expect high-performance models with powerful common-rail V-8 diesels to make a wider appearance.
What is also likely is that a less high-revving version of the RS4's engine is likely to appear with a turbo. It will deliver similar power, but better fuel consumption. In other words, RS4 engine is likely to be unique and only fitted to a few models.