Robert Kubica has admitted that not currently being able to make use of Formula One's latest technological introduction will put him at a disadvantage if he gets beyond the first lap of a 'normal' grand prix.

Speaking to the BMW Sauber team's official website after retiring one lap into the rain-hit Malaysian Grand Prix, the Pole admitted that he expected problems with those cars running the new-for-2009 Kinetic Energy Recovery Systems - or KERS for short - after observing it in action at the opening round of the year in Australia.

Although BMW Sauber is potentially the most advanced team in terms of KERS technology, Kubica is currently unable to make use of it because of his height and weight, which makes packaging the heavy technology impractical if he is to be competitive. As one of the taller drivers on the grid, his size would likely outweigh any benefits of the extra 80hp boost that the KERS technology provides, leaving the Canadian GP winner to look on as diminutive team-mate Nick Heidfeld experiments with the system.

"I think KERS is advantageous in race situations like overtaking and defending your position - and defnitely for the start," Kubica, who suffered an engine fire at Sepang, lamented.

"The distance from the start line to the first corner made for bigger gains for KERS cars at the start in Malaysia, but you could already see in Melbourne that KERS does make a difference. If you take the situation between Fernando Alonso and Timo Glock, Fernando was much slower, but he was boosting on every straight and Timo just didn't have the opportunity to pass.