Mark Webber resisted late pressure from Lewis Hamilton to hang on and take the final place on the podium in India.
The Red Bull driver looked well set for the runners-up spot in the early stages, however, the Aussie began to experience problems with the KERS from around one third race distance, and that later left him unable to hold off a determined and hard charging Fernando Alonso, who nipped by on lap 48.
Webber then also came under attack from the McLaren of Lewis Hamilton, and while it was touch and go, managed to stay in front, although less than a second split the two at the chequered flag following the 60-lap race at the Buddh International Circuit.
“We had a KERS issue today that we had to manage,” Webber explained at the finish. “It's maybe hard for people watching to know what it affects on the car, its power on the straight obviously, but also managing brake balances and those sort of things.
“The guys were trying to help me get the KERS to recover and were talking with me on the radio.
“In addition, when you have a one-stop race, it's always a chance you have a front-right lock up. As the fronts are very important you need to look after them which can affect the rhythm a little bit, but I tried to stay as cool as possible.
“Overall, I was pretty happy with how I drove; we should have finished further up the road, but it's the way it was.”
Red Bull Racing team principal Christian Horner meanwhile was impressed with how Webber coped with the KERS issues, especially given Hamilton was swarming all over the back of him at the end.
“Mark initially settled into what looked like a comfortable second, before we started to experience problems with the KERS around lap 20,” Horner added.
“We had to turn the system off initially then reinstate it in a reduced state of power, which unfortunately allowed Fernando get close enough after the stop. We saw the DRS was particularly powerful here.
"Mark then drove incredibly well to keep Hamilton behind him for the remaining laps of the race.”