GM bets on new four-cylinder family in Europe; U.S. plans unclear

General Motors' European subsidiary, Opel, has revealed a turbocharged 1.6-liter four-cylinder direct-injection gasoline engine that will be offered from early 2013 across its lineup, starting with the soon-to-be-revealed Astra-based Cascada convertible.

The aluminum block unit, the first in a new range of so-called SIDI (spark ignition direct injection) ECOTEC engines, forms the centerpiece of the company's downsizing strategy for displacement. The engine is claimed to have improved torque characteristics and a significant reduction in consumption compared with its predecessor.

In standard trim, known as Eco Turbo, the 1.6-liter engine kicks out about 168 hp and 206 lb-ft of torque.

In a higher state of tune, called the Performance Turbo, the engine's reserves rise to about 197 hp and 221 lb-ft.

The initial 1.6-liter version of the new SIDI Ecotec lineup will be followed by other variants, including a 2.0-liter unit.

There is no official word yet on whether the new small-capacity Opel engine will be offered in General Motors models in North America. But with more power and torque more than the naturally aspirated 2.4-liter multipoint fuel injected four-cylinder gasoline engine used in the Buick Verano, sister car to the Opel Astra, officials have told Autoweek it is “under consideration”.

Fuel savings are estimated to be about 13 percent. Opel is yet to announce performance and consumption for specific models.

The 1.6-liter unit is planned to make its debut in the new Cascada before heading into other Opel models, including the Corsa, Mokka, Meriva, Astra, Zafira and Insignia.

Opel
The 1.6-liter engine will employ direct injection and turbo charging. It will be offered in at least two states of tune, plus a likely 2.0-liter option.

By Greg Kable