The new motor produces 115 horsepower and 122 pound feet of torque between 1,800 to 4,700 rpm. Compared to Opel’s naturally-aspirated 1.6-liter four-banger, the 1.0-liter offers the same amount of power with 30 percent more torque and 20 percent better fuel economy. The engine will be mated to a six speed manual gearbox with a stop/start system when it makes its debut in the Adam.
The 1.0 liter SIDI turbo is part of a new family of Ecotec I3 and I4 engines in the sub 1.6 liter class being developed by GM. Small displacement engines are being introduced at a growing rate to meet customer demand for increased fuel economy and power levels consistent with larger engines. Opel claims that the 1.0-liter turbo can deliver a combined fuel economy of up to 71 mpg.
Currently, the minuscule 1.0-liter is only destined for the Adam, but it could be used globally in a variety of GM vehicles in combination with manual or automatic transmissions. If the engine were to make it to U.S. shores, it seems most likely to replace the 1.2-, 1.4-, and 1.8-liter inline fours currently found in the Spark, Sonic, and Cruze, though it may find its way into the next-generation Chevy Volt, and other Voltec-powered vehicles, as well.