Audi is working on a V8 version of the Audi R8 Spyder, however most articles we have seen so far are missing one point: which V8 engine will they be using? Our bet is on the new V8 engine which comes along with the new Audi RS5.
Well, let us set the record straight right here and now: The R8 Spyder will be offered with the V8, eventually. Exact timing hasn’t been set according to Audi, but the V8 Spyder should make it to showrooms early in 2011, at the latest. The V10 Spyder hits the market this fall. Just like the V8 coupe, the V8 Spyder (officially the R8 Spyder 4.2 FSI) will be offered with either the automated manual R tronic or the entirely righteous conventional 6-speed manual.
Source: Inside Line