General Motors' Australian arm Holden has launched an updated 'VZ' line of Commodore models to debut a new 3.6-litre version of GM's Global V6 engine 'down under'.

Holden is using the name 'Alloytec' for its two new versions of the double overhead camshaft, four valves per cylinder engine, which develop 175kW and 190kW. They replace a pushrod, Buick-designed V6 dubbed 'Ecotec' in recent years and come with revised four- and new five-speed automatic transmissions.

Holden has also upgraded the US-built 5.7-litre V8 offered as an option in the Commodore and in the long wheelbase luxury WL-series Statesman and Caprice spin-off models.

Apart from minor interior and exterior styling changes, the new range features electronic stability program (ESP) on some V6-powered models for the first time on Australian-manufactured sedans. The system also includes corner brake control and electronic brake assist.

The Caprice and Statesman are the first Australian-made vehicles with LED rear lamps. The Caprice has also gained a tyre pressure monitoring system.

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