Holden's Commodore large car is set to get a smaller V6 engine in more than 20 years as part of a plan to reduce fuel consumption and making it a more efficient vehicles.

As I understands back in last September that the Commodore will get a 3.0-litre V6, which is 17 per cent smaller than the 3.6-litre that’s been fitted to the large sedan since 2004.

The smaller capacity V6 is also expected to get a direct injection fuel system to further improve efficiency and match the latest technology from Europe and Japan.

Holden refused to talk about any upcoming changes or update. However, the power outputs for the new engine are still secret, but could be below the output of the current car’s - 175kW. However, the six-speed transmission is designed to better harness the output and ensure the Commodore still delivers the hearty six-cylinder performance the car has earned its reputation on.