FACTBOX: Auto sales up adj 1 pct in September

DETROIT (Reuters) - U.S. auto sales in September rose 1 percent from a year earlier, when adjusted for an extra selling day last year, according to sales data released on Tuesday by the auto manufacturers.

The following are highlights from sales data released by the largest car makers in the U.S. market.

Overall industry

* Total light vehicle sales -- 1,314,894 million units, down from 1,354,361 million a year earlier.

* September seasonally adjusted annualized rate of light vehicle sales (SAAR) -- 16.23 million units, down from 16.6 million in September 2007.

General Motors Corp GM.N

* Car and light truck sales up 3.8 percent (337,640 units)

* Year-to-date sales down 6.7 percent

* Inventories at month-end: just below 900,000 units, down about 100,000 units from year earlier

* Cars/trucks: Cars down 0.6 percent/light trucks up 6.8 percent

* Market share: 25.3 percent

* Key vehicles: Chevrolet Impala up 10.2 percent, Chevrolet Malibu up 1.8 percent, Chevrolet Silverado up 5 percent, Chevrolet Tahoe up 58.3 percent, GMC Sierra up 9 percent.

* Incentives: average $3,089 per vehicle, up from $2,988 a year earlier.

Toyota Motor Corp (7203.T)

* Car and light truck sales down 0.6 percent year-over-year (213,043 units)

* Year-to-date sales up 3.8 percent