IRVINE, California — Car shoppers received a critical piece of information about the 2016 Mazda MX-5 Miata convertible late last week as Mazda confirmed U.S. engine specifications.

The 2016 MX-5 Miata will deliver 155 horsepower and 148 pound-feet of torque from the standard Skyactiv 2.0-liter four-cylinder engine model sold here.

In comparison, the 2015 MX-5 Miata delivers 167 hp and 140 lb-ft of torque.

In the U.S., the 2.0-liter engine will come standard with a six-speed manual transmission. A six-speed automatic transmission is optional.

The MX-5 Miata shed approximately 150 pounds in the redesign.

The fourth generation of the MX-5 Miata is wider, lower and lighter than the current car. Main design cues include a low hood, blacked-out A-pillars and mirrors and exterior LED lights.

The MX-5 Miata is expected to arrive at Mazda dealerships this summer. Pricing has not been announced.

Key competitors to the MX-5 Miata include the Mini Cooper Roadster, Porsche Boxster and Volkswagen Golf GTI.

Edmunds says: Car shoppers can fill in some of the blanks on their personal spec sheet for the 2016 Mazda MX-5 Miata.