The SLR is assembled at McLaren in Woking, England. Prices start at 360,000 euros.
Beside technical difficulties, the marketing of such a car would also cause problems: It is not clear yet how to position a SLR with 600hp alongside the 500hp AMG version of the Mercedes SL.
A company spokesman told Automobilwoche that a SLR roadster was "not planned."
Meanwhile, Mercedes' management board has decided on the name CLS for the luxurious new E class Coupe.
The four-door offshoot of the current 211 series will be equipped more luxuriously than the sedan and the station wagon. The letter "S" is supposed to be align the model more closely with the high-end S-class range.
The CLS, the basic version of which will have six cylinders, will be launched in early 2005.