This is the 2010 Holden Commodore differs from its current version only in badging: it will wear the acronym SIDI on its flanks, which stands for Spark Ignition Direct Injection. Pop the hood, though, and you'll find that the long-running Aussie sedan gets one of the smallest engines it has had in donkey's years: a 3.0-liter V6 with 190 kW (270 horsepower) and 290 Nm of torque (213 pound-feet).
That SIDI-equipped engine will power Omega and Berlina sedans, and they are also slated to get a long awaited six-speed transmission to replace their four-speed units. Calais and SV6 trim levels, on the other hand, will get the 3.6-liter SIDI engine that pumps out out 210 kW (281 hp) and 350 Nm (258 lb-ft). The primary reason for the smaller six is added fuel economy, which Holden says its customers have repeatedly requested, and which might help it retain its 13-year-old title of the best selling car in Oz.
The 3.0-liter gets up to 13% better gas mileage (Omega Sportwagon), returning 9.3 l/km (25.3 mpg), with the help of standard equipment low rolling resistance tires. The GM marque also says that the Commodore can go from Sydney to Melbourne on one tank - according to Google Maps, that's 546 miles - with 7.5 l/km (31.36 mpg) during one real-world driving stint. If you're looking for even more from the Commodore, you'll get it at the end of 2010 when the car's four-year-old exterior is redesigned.
