The Altroz iCNG’s USP is the fact that you get lower running costs without having to sacrifice boot space entirely.
Tata Motors has used an innovative twin-cylinder setup for the CNG tanks that are placed under the boot floor, where you’d normally find the spare wheel.
This packaging liberates 210 litres of boot space, which, though down on the standard Altroz’s 345-litre boot, is still better than nothing at all.
The positioning of the tanks raises another question: what about the spare wheel? Tata has thought of that too.
The spare can be released by loosening a bolt inside the boot, just ahead of the CNG tanks.
The tyre drops down on a cord and is unhooked easily enough, and to put it back, you simply hook it up again and wind it the other way.
Powering the Altroz iCNG is Tata’s 1.2-litre, three-cylinder engine that puts out 73.5hp and 103Nm in CNG mode and 88hp and 115Nm in petrol mode.