The U.S. auto industry appears to be roaring based on sales figures for the month of September 2011. This, despite every other economic indicator wafting between stagnant growth for the economy and an outright plunge into another recession. Don't tell the folks selling cars in these great United States, though, because people are buying despite the doom and gloom coming out of Wall Street.

Special note must be paid to Chrysler Group, whose brands not only all scored positive sales results on their own, but collectively gave the company the largest rise is sales volume last month versus the prior year. Enough units were even sold to push the Chrysler Group ahead of Toyota Motor Company in sales for September, making the top three sellers all domestics.

In fact, the only brands really hurting besides Saab (-61.93 percent) and an inexplicably bad showing by Mini (-18.12) were Toyota, Honda and their respective luxury brands. These two giants from Japan are still clawing their way back from the earthquake in Japan earlier this year and neither has their global production back up to full speed quite yet. That's in stark contrast to their cross-island competitor, Nissan North America, which hasn't been shy in letting U.S. customers know it's inventory is fully stocked, and which posted a healthy sales gain by volume of 25.28% last month in the U.S.

Check out the rest of last month's sales numbers in the table below.

Brand/Company Vol. % Sep-11 Sep-10 DSR %* Sep-11 Sep-10
Ram 42.06 25,364 17,854 42.06 1,015 714
Mazda 37.36 25,521 18,580 37.36 1,021 743
Chrysler 35.80 23,559 17,348 35.80 942 694
Volkswagen 35.57 27,036 19,943 35.57 1,081 798
Nissan 28.20 84,485 65,900 28.20 3,379 2,636
GMC 27.69 33,194 25,995 27.69 1,328 1,040
Jeep 24.34 35,565 28,603 24.34 1,423 1,144
Suzuki 23.46 2,026 1,641 23.46 81 66
Chevrolet 21.51 147,611 121,479 21.51 5,904 4,859
Volvo 21.44 5,042 4,152 21.44 202 166
BMW 19.32 21,750 18,228 19.32 870 729
Audi 19.31 9,725 8,151 19.31 389 326
Kia 18.42 35,609 30,071 18.42 1,424 1,203
Mitsubishi 16.97 5,803 4,961 16.97 232 198
Jaguar 14.89 1,111 967 14.89 44 39
Ford 14.36 168,181 147,057 14.36 6,727 5,882
Hyundai 11.80 52,051 46,556 11.80 2,082 1,862
Dodge 10.48 40,073 36,272 10.48 1,603 1,451
Porsche 10.10 2,170 1,971 10.10 87 79
Land Rover 10.08 2,740 2,489 10.08 110 100
Mercedes-Benz 9.00 21,649 19,862 9.00 866 794
Buick 5.62 13,599 12,875 5.62 544 515
Infiniti 2.10 8,479 8,305 2.10 339 332
Cadillac 0.96 12,741 12,620 0.96 510 505
Subaru -2.32 20,934 21,432 -2.32 837 857
Lincoln -6.55 7,018 7,510 -6.55 281 300
Acura -6.62 10,010 10,720 -6.62 400 429
Honda -8.22 79,522 86,641 -8.22 3,181 3,466
Lexus -11.52 14,995 16,948 -11.52 600 678
Mini -18.12 3,999 4,884 -18.12 160 195
Toyota -18.25 106,456 130,214 -18.25 4,258 5,209
Saab -61.93 429 1,127 -61.93 17 45
Fiat NA 2,773 0 NA 111 0
COMPANIES
Chrysler Group 27.24 127,334 100,077 27.24 5,093 4,003
Nissan North America 25.28 92,964 74,205 25.28 3,719 2,968
General Motors 19.76 207,145 172,969 19.76 8,286 6,919
Jaguar Land Rover 11.43 3,851 3,456 11.43 154 138
BMW Group 11.41 25,749 23,112 11.41 1,030 924
Ford Mo Co 8.91 175,199 160,873 8.91 7,008 6,435
American Honda -8.04 89,532 97,361 -8.04 3,581 3,894
Toyota Mo Co -17.47 121,451 147,162 -17.47 4,858 5,886
*Brands and companies are displayed in descending order according to their percentage change in volume sales. There were 25 selling days in September 2011 and September 2010, so the change in monthly sales volume is the same as the change in average daily sales rate (DSR) for each brand/company.