Fernando Alonso's radio comments lacked professionalism - Ron Dennis

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Ron Dennis says Fernando Alonso's comments about Honda's lack of power during the Japanese Grand Prix did not show the level of professionalism he wants from his drivers.

As Fernando Alonso slipped down the field at Suzuka he radioed his team, saying: "GP2 engine! GP2 engine! It feels like it's GP2. Embarrassing. Very embarrassing." Although it was not the first time Alonso has criticised the McLaren-Honda over the radio this year, the message carried extra weight as it was specifically targeted at the Honda's power unit at its home track, where several Honda senior executives, including CEO Takahiro Hachigo, were in attendance.

"I'm not going to condone those sorts of things because it doesn't show the professionalism that I would like our drivers to show," Dennis said. "He's in the car, he's frustrated and of course his exposure is to the technical staff, but it was not a particularly constructive way to communicate with everyone at Honda.

"The way for me to deal with drivers is either through the appropriate management channels of Eric [Boullier, McLaren racing director] or in certain circumstances talk to them myself. But however I choose to do that remains a team matter and not a matter for the media."

Dennis admitted his drivers have been demotivated by recent results, but was keen to point out that the team needs to go through pain now in order to achieve success in the future.

"Anything that is coming out of our drivers at the moment has its origins in frustration and disappointment and demotivation. We are all demotivated, but I still can't understand why everybody doesn't appreciate the fact that you are not going to win the world championship if you have a second string engine, it's just not going to happen. Therefore, we have got to go through the pain and the learning curve to get a competitive engine. That is not a derogatory comment against Honda.

"Honda had the president of R&D and the president of the Honda motor company here and all of these people are here and totally committed. They understand what has to be done and of course they are increasing resources and putting more money and effort into it, but we will get there."