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Originally Posted by sam_78 I would like to ask a ques from Iraghava ,danlanan ,supreme baleno and all those who are totally against CNG .. Whats wrong in getting CNG fitted in these luxury cars, is it only the compromise in performance or ther's something else you want to point out ? |
@sam, I can clearly see (and understand) your rationale in going the CNG way - saving on maintenance expenses. And going by your daily running, that is quite a huge figure and your thinking is justified.
Coming to your question, apart from performance (which is the first casualty) the other issues I see with this are the following. These are from my experience of converting my old (but reliable, pre-LPG) M800 to LPG. Yours need not necessarily be the same.
1. Reliability of the car (which I rate as the most important feature in my car) becomes suspect, the moment you tamper with the engine, which your CNG fitter will have to do to do the CNG fitment. Hoses will be cut here, some joints made there, etc. A Jap engine (from my experience - do not have exp. with other makes) is normally maintenance-free for atleast 5 years, if not 10 or more, with the user needing to do only the regular oil change and scheduled services. But this bullet-proof reliability can go for a toss, when we make modifications. During the first 15-odd years, I never had any reliability issues with my M800. But after the LPG fitment, I had starting problems, stalling, abnormal shut-offs etc. Inshort, I hated the experience. If real life had an undo button, I would have gladly clicked it to go back to my good old petrol car.
2. Effect on the engine parts due to a different fuel being used, for which it was not originally designed - difference in lubrication quality etc.
3. Boot space is compromised due to the CNG cylinder kept there.
4. Laden weight would increase due to having cylinder+CNG on board, apart from petrol (atleast a minimal quantity kept for emergency and to avoid tank rusting). This extra weight would have an impact on FE (however minimal).
5. Safety issues - there will be people that say it is safe, while others cry out that it is not. I did not have any issues with safety for the short period I used it in LPG mode, but then I have also seen carcasses of cars that burned over. I will leave this one to the experts.
In your case, I understand that petrol can prove to be quite costly, due to the high-end & low-FE car that you are looking at + the cost of petrol. Why not diesel, which gives better FE per litre and is also atleast 30% cheaper per litre ? I would like to recommend the Skoda 1.9TDi, which is a nice car and delivers great FE too. But then its spares/service costs are pretty high, as seen from owner experience on this forum.
So, in short, the options seem very limited.