New stuff this time. We've updated our reliability stats for the Sonic to include owner experiences through the end of 2014. Plus we've added reliability trends graphs. These indicate how a model's reliability has changed as it has aged, and how different model years performed when the same age.
Repair frequencies, in terms of repair trips per 100 cars per year:
2013 Sonic: 69, high--many reports of coolant leaks lately, especially for the 1.4T's water pump
2012 Sonic: 51, moderate
We'll have further updates in May and in August. The more owners participate, the more comprehensive and precise these will be.
To see how competitors compare, and to sign up to help improve this information:
Chevrolet Sonic reliability ratings and comparisons
To view the new graphs, select "reliability trends" in the breadcrumbs at the top of the linked page. Or check out the attachment.