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GM Holden Reduces Pricing on LPG-Powered Commodores

The LPG system on the Alloytec V-6. Click to enlarge.

In Australia, GM Holden has reduced the cost of Holden’s dual-fuel LPG system by $1,500: from $3,900 to $2,400 on Commodore Omega, Berlina and 60th Anniversary sedans; and from $4900 to $3400 for VE Omega ute (automatic model only). The Australian Federal Government offers a rebate of $2000 on such vehicles, and the state government of Western Australia offers an additional $1,000 subsidy.

Holden’s LPG unit is an advanced Sequential Vapour Gas Injection (SVGI) system, which injects gas directly into the engine, mimicking the gasoline injection sequence. It has automatic changeover to LPG via seamless cylinder-by-cylinder activation and provides an automatic change back to gasoline at low LPG levels.

Holden’s dual-fuel Alloytec V-6 engine is available on VE Omega, Berlina and 60th Anniversary sedan models, and the VE Omega ute. Holden’s LPG-powered sedans produce peak power of 175 kW (235 hp) @ 6000 rpm (gasoline 180 kW @ 6000 rpm) and peak torque is 325 Nm (240 lb-ft) @ 2600 rpm (gasoline 330 Nm @ 2600 rpm).

Dual-fuel Omega and Berlina sedan models running on LPG currently deliver fuel economy of 15.5 liters per 100km (15.2 mpg US) and 15.7 liters (15 mpg US) for Omega ute.

On the sedan, a 73 liter (19 gallons US) cylindrical LPG tank is located under the parcel shelf in the trunk. On the ute, a 74 liter cylindrical tank is fitted in the cargo tray with a modified tub liner. On both variants, the existing 73 liter gasoline tank is unchanged.

The dual fuel system has been designed and engineered by Holden; dual fuel models are covered by Holden’s three-year/100,100 km (62,200 miles) new vehicle warranty and are fully tested for safety and crash worthiness.

LPG and gasoline fillers are combined under the existing fuel filler cap and there is a separate LPG fuel gauge. There is no difference to service intervals and little difference to service costs, with an LPG vapor filter requiring replacement every 15,000 km (9,320 miles), and a liquid filter every 120,000 km (75,000 miles).


Shouldn't someone say something derogatory here?


These cars are used by long distance commuters and the extra cost pays for itself in a couple of years. The next step is conversion to CNG (mainly methane) as Australia is decades away from peaking in natural gas as opposed to LPG (mainly propane). The tanks would need to be aluminium/fibre composites to keep the weight down. I'm not sure a PHEV compact car would have spare room for both a battery pack and a CNG tank. Future problems include raising the fuel tax too high and the fact that other countries will take all Australia's gas production in the form of LNG.


Why so low fuel economy on gas? 15 L/100 km - that's bad, gasoline consumption for this type of cars is in the range of 7 to 9 L / 100 km.


The irony of getting a $3000 rebate to convert your iMIEV to LPG.


"Why so low fuel economy on gas? 15 L/100 km - that's bad, gasoline consumption for this type of cars is in the range of 7 to 9 L / 100 km."

Tony, standard fuel economy rate for a Commodore is 10.9 L /100 km.

What makes LPG popular here is that is is significantly cheaper than petrol (.70 AUD as compared to 1.40 AUD)

So even though fuel economy gets worse by a third, the cost of the fuel drops by half. And because the Commodore (and the Ford equivalent the Falcon) are large five seater cars with big boots (Trunks for the Americans reading) the extra fuel tank is not a problem.

LPG is also used by every Taxi in Australia, so it is widely available, even in remote towns.

Roger Pham

Gaseous fuels like methane and LPG does not need sequential port injection. A single throttle body injector is all that would be needed, to reduce cost. Power output may be reduced by a little due to the air volume being displaced by gas, but not by much. This may produce better fuel efficiency due to better mixing of air and fuel. Heavier weight of the LPG version may partially be responsible for the lower fuel efficiency.


Roger, this type of gas fuel injection is the current aftermarket type with OM warranty. Apparently gives very good economy and superior emissions and computer compatibility without backfire issues.
You could be forgiven for thinking that the fuel economy is compromised, I am not sure as o the standard commodore efficiency, but mintaka's 10.9 sounds about right. The extra 4.- liters per comes from the extra weight and lower gearing in the ute .
The sad fact is that both local GM and Ford sixes are dirty inefficient efforts and the average consumer is only starting to recognise the alternatives.

A tradition of support for the local industry bis behind this pathetic effort. But they may claim small product runs as a contributing factor.

The downstream industries in auto manufacturing are recognised as strategically important. Now Toyota is upping the ante by setting up for hybrid Camry production with 35 -70? Million in federal / state incentives.

GM Holden and Ford are looking down the same barrel as the American parent Co's.

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