Adrian Sutil got his first taste of KERS yesterday as testing came to a close at Barcelona's Circuit de Catalunya.
The German, who took over from his Force India F1 team-mate, Paul di Resta, for days three and four, completed 64 laps in total on Monday and despite only being seventh quickest said he was happy with his day.
“A very productive day in general for us,” Sutil said. “We made some good progress with the balance and we've now got a basic set-up that feels smooth and easy to drive. I also got a run on the supersoft tyres, which we didn't manage to do yesterday.
“Of course we also put the KERS on the car. It ran reliably and allowed us to complete the full test programme: very promising for this point in testing. It's still early days for the system but we have got ourselves into a good rhythm and can feed this back into the factory to get some more performance for the next test.”
Force India's circuit engineering director Dominic Harlow meanwhile added that overall the Silverstone-based outfit was pleased with how testing went over the four days.
“A good final day's testing concentrating on KERS set-up, reliability and also some aero tests that remained on our programme. Adrian also looked at some ride height sweeps and a few procedural checks.
"It's been a productive four days for the team and overall the car seems to be performing reliably and according to expectations in all the major areas,” Harlow summed-up.