SANTA MONICA, Calif. -

Edmunds.com poured over R.L. Polk & Co. data to find which U.S. market is the hottest for new-vehicle buyers.

What did the site find? Turns out, the metropolitan area with 24 percent more new-retail registrations during the first half of this year compared to the same span last year is Atlanta.

Edmunds.com discovered Phoenix was next on the list, recording a 23-percent increase in new-vehicle registrations year-over-year.

Analysts indicated Sacramento, Calif., Salt Lake City and Birmingham, Ala., each with a 22-percent increase, round out the top five new-vehicle hot spots.

Nationally, new-retail registrations have climbed 14 percent this year, according to Edmunds.com.

The site’s analysis also showed Atlanta’s registration figures are consistent with online shopping activity by visitors to Edmunds.com.

The number of online users in Atlanta considering a new-vehicle on Edmunds.com has climbed 14 percent year-to-date over the same period last year.

Edmunds.com also analyzed the slowest-growing new-vehicle markets. While none of the top 50 U.S. markets have regressed this year, the site found Detroit has shown the least growth compared to 2010 at just 2 percent.

New York (up 3 percent), Boston (up 4 percent), Miami (up 5 percent) and Providence, R.I., (up 7 percent) rounded out the bottom five.

In a newly published update of her 2011 automotive sales forecast, Edmunds.com chief economist Lacey Plache says that early-year momentum in new-vehicle sales nationwide was slowed by disruptions triggered by the Japanese earthquake and other economic headwinds that have hurt consumer confidence.

“Some consumers who deferred purchases earlier this summer are responding to improving vehicle supply and more competitive prices,” Plache surmised.

“But declining economic conditions are keeping other consumers away from dealer lots and will continue to do so at least through the end of the year,” she added.

Fastest-Growing New-Car Markets (January-July)
 Rank  Market  New-Car
 Registrations
2010
 New-Car
 Registrations
 2011
 Percent
 Change
 1.  Atlanta  78,555  97,681  24%
 2.  Phoenix  63,455  78,119  23%
 3.  Sacramento, Calif.  36,942  45,230  22%
 4.  Salt Lake City  28,897  35,376  22%
 5.  Birmingham, Ala.  26,276  32,003  22%
 6.  Charlotte, N.C.  40,221  48,887  22%
 7.  Cleveland  78,895  95,035  20%
 8.  Las Vegas  24,287  28,817  19%
 9.  Portland, Ore.  32,220  39,331  18%
 10.  Los Angeles  252,372  298,500  18%
   Total U.S.  4,866,688  5,542,840  14%

 

Slowest-Growing New-Car Markets (January-July)
 Rank  Market   New-Car
 Registrations
2010
  New-Car
 Registrations
 2011
 Percent
 Change
 1.  Detroit  138,882  141,495  2%
 2.  New York  450,685  465,636  3%
 3.  Boston  140,507  145,511  4%
 4.  Miami  102,225  107,706  5%
 5.  Providence, R.I.  28,573  30,697  7%
 6.  West Palm Beach, Fla.  48,469  52,264  8%
 7.  Norfolk, Va.  28,697  30,997  8%
 8.  Albany, N.Y.  33,962  36,853  9%
 9.  Philadelphia  157,687  171,311  9%
 10.  Washington, D.C.  122,103  133,267  9%