Today is the final day for Chevrolet’s ‘Love It or Return It’ campaign, and, judging by its sales totals for August, it appears customers loved it. The carmaker reported that only one customer initiated a return during the summer-long promotion that began on July 10.

The manufacturer offered customers 60 days to return their 2012 or 2013 Chevy purchases if they were not satisfied with the product. Customers who opted out of the return offer were eligible for $250 to $500 in incentives depending on the model.

“It’s clear customers are very satisfied,” said a GM spokesperson. “The bottom line is we’re thrilled with the program. It did exactly what we hoped it would do, and you can see the results in our strong August sales … and several new sales records.”

Chevrolet passenger cars were up 25 percent despite very limited inventories of the Malibu, the spokesperson noted. The Spark, Sonic, Cruze and Volt models each posted their best-ever monthly sales in August 2012. Chevrolet’s August sales accounted for nearly 71 percent of General Motors’ total monthly sales, with 169,978 units sold — up 11.3 percent from one year earlier.

The company was unable to provide a total of Chevrolet vehicles delivered during the entire ‘Love It or Return It’ program. GM also attributed sales gains to national advertising during the 2012 Olympic Games in London.