Leasing and higher purchase rentals outstanding were also flat at 79 billion rupees by end September from 78.9 billion rupees in March.
Sri Lanka's new vehicle registrations have plunged this year after the state raised import taxes, the rupee depreciated and interest rates rose.
The firm reported earnings of 49 cents per share for the quarter. For the six months to September profits fell 40.2 percent to 1.5 billion rupees giving earnings of 92 cents per share.
The stock closed at 12.40 rupees, down 10 cents Wednesday.
Group interest income rose 24.6 percent to 4.0 billion rupees but interest expenses rose at a faster 46 percent to 2.4 billion rupees allowing net interest income to grow only 0.9 percent to 1.56 billion rupees.
Fee income rose 78 percent to 516 million rupees. Profits from Islamic finance, which is also classified as fee income rose 122.2 percent to 200 million rupees.
Loan loss provisions rose to 189 million rupees from 23 million rupees a year earlier.
The gross non-performing loan ratio rose to .97 percent from 0.65 percent and the net NPL ratio after provisions was a negative 0.23 percent up from 0.16 percent in March.
At stand-alone company level, profits fell 17.2 percent to 643 million rupees. Return on equity at company level fell to 14.29 percent by end September 2012 from 32.62 percent in March.
Group gross assets rose just 1.4 percent to 97.4 billion rupees and net assets rose 3.3 percent to 19.3 billion rupees.
At company level People's Leasing and Finance reported a capital adequacy of 25.4 percent of risk weighted assets by end September 2012, down slightly from 25.50 percent in March.