Three fuel choices now sit in the same showroom, often on the same model. The honest answer to “which is best” is that it depends entirely on your monthly running, and it is worth ten minutes with a calculator before deciding.
The rule of thumb
- Under about 800 km a month: petrol. The cheaper purchase price will not be recovered by fuel savings for years.
- 800 to 1,500 km a month: CNG usually wins on cost, if there is a filling station on a route you already drive.
- Above 1,500 km a month, mostly in traffic: a strong hybrid starts to make real sense.
- Long, steady highway runs: the hybrid advantage narrows, because hybrids recover their energy from braking.
What CNG actually costs you
The fuel is materially cheaper per kilometre. Against that: a higher purchase price, boot space taken by the cylinder, a mandatory cylinder test every few years, and slightly higher service costs. Factory-fitted CNG keeps your warranty intact — an aftermarket kit generally does not, and that is not a small detail.
What a strong hybrid actually does
It drives on the electric motor alone at low speed and recovers energy when you brake, which is why the benefit is largest in traffic and smallest on an open highway. There is nothing to plug in. The battery carries its own warranty.
And the electric option
An EV makes sense when you can charge where you park and your daily distance sits comfortably inside the range. If both are true, the running cost is lower than anything else here. If either is not, it will frustrate you.
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