olli:
According to my P-sources, the Cayenne Diesel S will be equipped with an upgraded version of the current 4.2 l V8 Audi Diesel engine (i.e. more than 340 hp), rather than the 313 hp V6 3.0 l twin turbo. Official launch is pencilled in for spring/summer 2013, presentation in Geneva in March 2013 is a possibility. Performance could even rival the new top-of-the-line tri-turbo BMW M Diesel with 381 hp...
However, the Cayenne facelift will probably have to wait until H2 2014, as the Panamera facelift this fall will take precedence.
The second Porsche Diesel will be powerful and yes, more than 313 hp are in the pipeline but I don't know for sure which engine will be used. Price tag will be steep too I'm afraid but the base Diesel is going to get a mild power upgrade to 270-280 hp.
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RC (Germany) - Rennteam Editor Porsche Panamera Turbo S, BMW X5M, Mercedes C63 AMG Coupe PP/DP, Mini Cooper S Countryman All4