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Tata Tigor CNG actual world gas economic system examined, defined | Autocar India

Written by Rashmi

We discover out if the Tigor CNG can ship the ARAI-claimed gas economic system of 26.49km/kg.

After the introduction of an all-electric model, alongside the petrol, Tata Motors has prolonged the Tigor‘s variant vary with the launch of the Tigor iCNG. As its identify suggests, this new model can use both petrol or compressed pure fuel (CNG) to energy its 1.2-litre three-cylinder engine – which has been carried over unchanged. Whereas working on petrol, it makes 86hp and 113Nm of torque, whereas in CNG mode, it makes 73hp and 95Nm. Effectivity is claimed to be 26.49km/kg of CNG, however we put it by way of our actual world check cycles to search out out what the numbers are.
  • CNG mode makes 15 % much less energy than petrol
  • Sits between petrol and electrical in working prices
  • 60L tank holds about 10-kilos of CNG

What’s the actual world effectivity of Tata Tigor iCNG?

The iCNG model doesn’t get drive modes to talk of. We drove the automotive in petrol-only mode first, and it returned 10.68kpl within the metropolis and 14.72kpl on the freeway, averaging 12.7kpl total. In comparable circumstances, in CNG mode, it managed 16.85km/kg and 25.86km/kg within the metropolis and freeway, respectively, thus averaging 21.35km/kg of CNG.

After we translate these CNG effectivity numbers to value per kilometre, we arrive at a median working value of Rs 3.53 per kilometre (value of 1 kilogram of CNG being Rs 72 in Mumbai). In comparison with the working value of petrol, the numbers work out to be Rs 9.69 per kilometre (value per litre of petrol being Rs 120 in Mumbai), which is sort of thrice that of CNG.

For reference, the Tigor EV’s common working value is merely Rs 1.08 per kilometre, even when we take the price of electrical energy as Rs eight per unit, which is a excessive slab fee.

Evaluation of Tata Tigor iCNG’s gas effectivity

The Tata Tigor iCNG weighs round 100kg greater than its petrol-only counterpart, and to haul the added weight with out feeling torpid, its gear ratios have been shortened. Whereas the 1.2-litre engine does effectively to maintain up with site visitors, you’ll have to work the gearbox and prod the throttle to get transferring, which takes a toll on gas effectivity. Additionally, whereas cruising at 100kph in fifth gear, the engine spins at 3,200rpm, which will increase the quantity of gas it sips. For a extra detailed analysis, keep tuned for our exhaustive street check of the Tata Tigor iCNG, coming quickly.

Autocar India’s gas effectivity testing

Earlier than our real-world gas effectivity check, we fill the tanks of our check automobiles until the brim and keep tyre pressures based mostly on the producer’s suggestion. These automobiles are pushed in mounted metropolis and freeway loops and we keep sure common speeds. To maintain a examine on any untoward variation, we at all times have a reference automotive driving alongside, one which we’ve already examined previously; periodic driver swaps additional neutralise variations in driver patterns.

On the finish of every cycle, we calculate effectivity by tanking them up until the brim. All through our check, there is just one individual in every automotive, working the air-con and different electricals just like the audio system, indicators and wipers when required, identical to how an everyday consumer would. We take satisfaction in our testing knowledge, which isn’t merely constant, but in addition provides customers an correct indication of what they will count on in the actual world.

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About the author

Rashmi