The Thomson Reuters/University of Michigan's final reading on the overall index on consumer sentiment climbed to 85.1 from 84.1 in June, topping expectations for 84. It was the highest level since July 2007 and was also an improvement from July's initial reading of 83.9.

"This high level of confidence points toward a continued expansion of consumer spending in the year ahead," survey director Richard Curtin said in a statement.

The survey's barometer of current economic conditions also hit the highest level in six years on a final reading basis, jumping to 98.6 from 93.8. But the gauge of consumer expectations was less robust, slipping to 76.5 from 77.8.