TOKYO, Oct. 11 (Kyodo) - Sales of used vehicles in the first half of fiscal 2001 in Japan fell 0.6% from the same period of last year to 2,652,080, the first decline since 1999 for a fiscal first half, the Japan Automobile Dealers Association said Thursday. Sales of used passenger cars in the first half to Sept. 30 fell 0.4% to 2,263,447, also the first decline since 1999. However, sales of used cars with engines of more than 2000 cc rose 5.6% to a record 879,368, up for the 24th straight fiscal year first half, while those of used smaller cars dipped 3.8% to 1,384,079, for the second year of decline. Sales of used trucks fell 1.5% from the same six-month period of last year to 296,000, but those of used buses increased 2.0% to 8,641. In September, sales of used vehicles fell 7.9% from a year earlier to 397,201, a turnaround from a 0.6% increase in August. Sales of used passenger cars in September fell 8.2% from a year earlier to 338,549, compared with a 0.8% gain in August. Sales of used cars with engines of more than 2000 cc in September fell 3.2% to 133,118, while sales of used smaller cars plunged 11.3% to 205,431. Sales of used trucks in the month dropped 8.1% to 44,126, but those of used buses jumped 43.5% to 1,626.