Thinner new-car margins drag down Sonic Q2 earnings

Sonic's second-quarter net tumbled 47 percent on a 1 percent rise in revenue. The company blamed weak new-vehicle sales and thinning margins.

UPDATED: 7/28/17 11:37 am ET - adds details
2017 Fiat Chrysler diesel vehicles approved for sale by regulators

The EPA and California Air Resources Board said they approved FCA's request to sell 2017 diesel vehicles with updated emissions software after months of testing.