Porsche of Germany and Maserati of Italy have decided not to take part in the 41st Tokyo Motor Show this fall in Chiba, the organizer said Thursday.

The two luxury carmakers have joined Germany's Volkswagen, Mercedes-Benz and BMW in passing on the biennial showcase in a bid to save money amid the global auto industry slump.

"While the decision is regrettable, the Tokyo Motor Show remains important as an opportunity to demonstrate advanced technologies to the world," said Satoshi Aoki, chairman of the Japan Automobile Manufacturers Association, which sponsors the event.

With a succession of foreign automakers deciding not to participate in this year's show, Japan's eight automakers are expected to dominate the event.