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| One major advantage for our customers is the low price of gas. |
- CNG: 1.51 - 1.71 SGD/kg
- Diesel: 1.71 - 1.80 SGD/litre
- Petrol (Normal): 1.90 - 2.00 SGD/litre
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*Average prices of Petrol, CNG and Diesel as of August
(Source: http://www.petrolwatch.com.sg, 1st of September 2008)
Thereby, converting to CNG leads to substantial savings, in cost per kilometre that you drive. |
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| Users of CNG technology also qualify for the Green Vehicle Rebate (GVR). |
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The GVR aims at bringing a change to consumer behavior to become more environmentally friendly and to support clean emerging technologies by narrowing the cost differential between a green vehicle and the conventional equivalent model.
The GVR was first introduced in January 2001 and has been reviewed regularly. In a review conducted in 2005, the GVR for newly-registered green passenger vehicles was enhanced from 20% of OMV to 40% of OMV for the period 1 Jan 2006 to 31 Dec 2007.
Government agencies (Ministry of Finance, Ministry of the Environment and Water Resources, Ministry of Transport, Land Transport Authority and National Environment Agency) have reviewed the GVR again in 2007 and decided to extend the GVR for another two years from 1 Jan 2008 to 31 Dec 2009.
Owners of new green vehicles registered in Singapore will enjoy the following GVR given on the Additional Registration Fee: |
- For passenger vehicles: 40% of OMV at registration
- For commercial vehicles: 5% of OMV at registration
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| Other tax incentives enjoyed by green vehicles are: |
- For CNG vehicles: Special tax exemption until 31 Dec 2009
- For hybrid, electric and CNG buses and commercial vehicles: Road tax is pegged to that for petrol equivalents, which is 20% lower than their diesel equivalents.
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CNG cars are also environmentally friendly in terms of emissions as the following figures illustrate:
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Natural gas vehicles reduce CO2 emissions by approximately 25% compared to the equivalent petrol vehicles and reduce particulate matter (PM) emissions to practically zero.
Furthermore, natural gas vehicles reduce nitrogen and carbon monoxide emissions by about 55% each and ozone emissions by about 60%. |
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Driving a car with CNG is very safe. The German Technical Inspection Agency "TÜV" has certified that the usage of CNG is as safe as that of petrol. The fire hazard is much lower and in cases of accidents, CNG is contained much safer in cylinders than petrol in ordinary plastic tanks.
The first reason for the high safety rating is the fact that CNG has an ignition temperature of about 600°C (which is approximately three times higher than petrol's ignition temperature). This means that the danger of an explosion, deflagration or a fire is much lower than compared with a petrol or a diesel vehicle. Secondly, CNG is lighter than air. Therefore, if a leak were to occur, the gas would simply rise up and quickly dissipate into the atmosphere.
Furthermore, CNG gas cylinders are built with special materials and are designed for the highest safety specifications. Our cylinders are tested and certified by the international research and testing agency Bureau Veritas in Argentina. |
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Taking all these positive effects into consideration, potential buyers also have to keep in mind that there are some disadvantages of a CNG modification. Usually, the cylinder(s) are installed in the boot of the car, which means, that the storage capacity in the boot is reduced. For an idea of the decrease in storage capacity, images of installed cylinders can be seen on our car conversion gallery page. You may also drop by our workshop and try test-fitting a mock cylinder into your boot.
One other issue with running on CNG is mileage of your vehicle, which is limited by the capacity of the cylinder and the CNG infrastructure network in Singapore. The standard installed cylinder may hold up to 11kg of natural gas at 220 bar with a fuel consumption of about 8kg/100km (2.4L engine), giving you a mileage of about 150km. The mass (kg) of gas that is filled into a tank upon refueling is dependent on the configuration of the gas station where you refuel at, and not something that is determined by the kit that we install. CNG Stations operate compressors and depending on the efficiency of that compressor you may or may not get a 100% full tank.
Whilst running on CNG you are at any time able to switch back to petrol. You are also required at all times to have some petrol in your fuel tank, as on ignition your car starts on petrol. After some time your system will automatically switch to running on gas, provided that there is CNG gas in your cylinder.
A final note on converting a car to CNG: CNG conversion is a modification to your car, turning your car into a bi-fuel car. On petrol, your car will run as usual, but whilst running on CNG you may suffer a loss in performance. Symptoms may include car jerking, weak acceleration, or engine stalls. This is due to the fact that CNG and petrol are different forms of fuel. This can affect drivers who drive too gently, and also drivers who drive aggressively. Because of this, you may need to adapt your driving style to suit the optimal running of CNG. |
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