Oct.13 (GMM) Red Bull is confident it has got to the bottom of its recent alternator problems.

Renault F1 Team engine
Renault F1 Team engine

Photo by: xpb.cc

The team has had several problems with the Magneti Marelli units supplied by engine partner Renault in 2012.

But Germany's Auto Motor und Sport says Renault recently reverted to a 2011-specification alternator that helped Sebastian Vettel to reliably win the last Suzuka and Singapore Grands Prix.

"We are using a model now that has proved itself over two months," Red Bull's Dr Helmut Marko is quoted by the German broadcaster RTL.