Niki Lauda has admitted he is concerned about F1's switch to four cylinder engines.

Niki Lauda has admitted he is concerned about F1's switch to four cylinder engines.

Not keen on the newly announced turbo formula for 2013, Ferrari president Luca di Montezemolo recently insisted that "for the top class of racing it sounds a bit pathetic".

Triple world champion Lauda agrees: "I am worried about the sound, which in formula one has been so unique.

"Hopefully there will be more than a faint hum," the Austrian told Bild am Sonntag newspaper.

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