While staying at what analysts are calling manageable levels, TransUnion reported jumps in the auto loan delinquency rate on both a quarterly and yearly basis.

TransUnion indicated the ratio of borrowers 60 days or more delinquent on their auto loans increased to 1.04 percent in the third quarter. The level marked a rise from the previous quarter (0.87 percent) and the previous year (1.00 percent).

Despite the uptick, analysts pointed out the delinquency rate is well below the Q3 average of 1.22 percent observed between 2007 and 2013.

TransUnion also highlighted auto loan debt per borrower increased for the 10th straight quarter, moving up 4.7 percent from $15,943 in Q3 of last year to $16,685 in Q3 of this year.

On a quarterly basis, auto loan debt also increased from $16,410 in the second quarter.

The data provided are gathered from TransUnion's proprietary Industry Insights Report (IIR), a quarterly overview summarizing data, trends and perspectives on the U.S. consumer lending industry. The report is based on anonymized credit data from virtually every credit-active consumer in the United States.

"The auto loan story continues to be a positive one with relatively low delinquency rates and increased auto loan balances," said Pete Turek, vice president of automotive in TransUnion's financial services business unit.

"Auto loan originations also are increasing as the demand for both new and used autos remains strong. While subprime delinquency levels are rising, they still remain at manageable levels," Turek continued.

The subprime delinquency rate (those consumers with a VantageScore 2.0 credit score lower than 640 on a scale of 501 to 990) increased from 5.30 percent in Q3 2012 to 5.60 percent in Q3 of this year, according to the credit bureau.

Despite the increase, analysts added the delinquency rate for this group remains near levels observed in recent third quarters:

—Q3 of 2011 stood at 5.45 percent.

—Q3 of 2010 stood at 5.82 percent.

—Q3 of 2009 stood at 6.59 percent.

Viewed one quarter in arrears (to ensure all accounts are included in the data), TransUnion indicated new account originations increased to 6.55 million in Q2 2013, up from 5.89 million in Q2 2012. This level is the highest observed for a second quarter since TransUnion began tracking it in 2007 through IIR.

The share of non-prime, higher risk loan originations (with a VantageScore 2.0 credit score lower than 700) grew by 56 basis points (from 32.62 percent in Q2 2012 to 33.18 percent in Q2 2013). This percentage is still much lower than what was observed pre-recession (38.04 percent in Q2 2007).

TransUnion recorded 59.5 million auto loan accounts as of Q3 2013, up from 56.2 million in Q3 2012.

"This number is now approaching pre-recession levels, and we believe there may be more room for it to rise," Turek said.

Only 15 states experienced either a decline or had their auto loan delinquency rates remain flat between Q3 2012 and Q3 of this year.

TransUnion noticed the largest delinquency declines occurred in Oregon, South Dakota and California. The firm said the largest increases occurred in Alaska, Michigan and West Virginia.

Auto loan balances rose in every state except Michigan, which experienced a 0.3 percent decline between Q3 2012 and Q3 2013.

TransUnion is forecasting auto loan delinquencies to rise slightly in the fourth quarter because of historic seasonality associated with auto financing.

"Auto loan delinquencies generally rise in the fourth quarter as consumers place higher priority on other consumer goods during the holiday shopping season," Turek said.

TransUnion's forecast is based on various economic assumptions, such as gross state product, consumer sentiment, unemployment rates, real personal income, and others. The forecast would change if there were unanticipated shocks to the economy.

This information is reported by TransUnion and is part of its ongoing series of quarterly analyses of credit-active U.S. consumers and how they are managing credit related to mortgages, credit cards and auto loans.

TransUnion's previous quarterly reports utilized the company's Trend Data database, which consisted of 27 million anonymous consumer records randomly sampled every quarter from TransUnion's national consumer credit database. The latest reports now include nearly all active credit consumers.

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