Bengaluru Taxes These Cars More Than 3x What Delhi Does

Register a Maruti Suzuki S-Presso in Bengaluru instead of New Delhi and the on-road price jumps from ₹3.85 Lakh to ₹4.18 Lakh, a ₹33,000 gap that has nothing to do with the car and everything to do with Karnataka’s 13% one-time road tax, more than three times Delhi’s flat 4%. Run the same comparison across the five cheapest factory-CNG cars on sale in India and the gap only grows, because Karnataka’s rate itself climbs with the car’s price while Delhi’s does not.

These five hatchbacks and vans sit at the bottom of the list of CNG cars under ₹10 lakh: the Maruti Suzuki S-Presso, Alto K10 and Celerio, the Maruti Eeco, and the Tata Aeris. On The Spec’d’s own city price pages, here is what the entry petrol trim of each actually costs on the road in the two cities, and what stepping up to the factory CNG version adds on top.

What the Cheapest CNG Cars Cost On the Road

Every figure below is the entry petrol trim’s on-road price, by The Spec’d’s city price pages: ex-showroom plus RTO road tax, insurance and FASTag, for New Delhi and Bengaluru.

These are The Spec’d’s estimates, built from the maker’s ex-showroom price and each state’s published road-tax rules, so treat them as what you’ll come to, not a dealer quote. The pattern is consistent: Delhi charges a flat 4% at every one of these prices, while Karnataka charges 13% up to around ₹5 lakh and 14% just above it, which is why the gap widens from ₹33,000 on the cheapest car to ₹55,000 on the costliest of the five.

What Bengaluru’s Road Tax Actually Does to the Price

None of this is the dealer padding the bill. Delhi’s 4% road tax on the S-Presso comes to ₹13,996; the same car in Bengaluru carries a 13% tax of ₹46,487, over ₹32,000 more before insurance is even added. Insurance itself barely moves between the two cities since it is based on the car’s price, not the city. FASTag and accessories add a few hundred rupees either way. The entire gap, in other words, is the state government’s tax slab, not anything the showroom controls.

What the CNG Kit Itself Costs, Trim for Trim

Ex-showroom prices don’t change by city, so this part of the sum is the same everywhere in India. Comparing each car’s CNG variant against the petrol variant at the exact same trim and feature list, the way the Alto K10 and S-Presso line up against each other, isolates what the factory CNG kit itself actually costs.

Four of the five charge almost exactly ₹80,000 to ₹85,000 for the CNG kit over an identical petrol trim. The Aeris is the outlier at a flat ₹1 lakh, though its iCNG system is also the most capable here: twin cylinders, a direct CNG start with no petrol priming, and 75.5 PS in CNG mode, more power than most rivals manage even on petrol-only CNG setups.

The Catch: Fewer Seats, Smaller Boots

The CNG kit is never a free upgrade beyond the price. The S-Presso’s CNG variant seats four, not five, and drops the idle start-stop system that the petrol version gets. The Aeris takes the bigger hit: boot space falls from 419 litres on the petrol car to 227 litres on the iCNG, close to half, because the twin cylinders eat into the load floor. Budget for less luggage room before you budget for the fuel savings.

Which One to Actually Buy

If getting into a factory-fitted CNG car as cheaply as possible, on the road, is the whole point, buy the S-Presso.

It already has the cheapest on-road entry price on this list in both cities, and its CNG premium (₹82,000) sits at the low end rather than the Aeris’s ₹1 lakh-plus jump. Buyers who need five seats in the CNG trim, not four, should look at the Celerio instead; its own CNG premium of ₹79,500 is actually the smallest of the five, even though its starting price is higher. Skip the Eeco unless you specifically need van-style space, since its on-road entry price already matches the much newer, better-equipped Aeris.

Is the CNG version of these cars worth the extra money over petrol?

For anyone who drives more than about 40-50 km a day in a city with a CNG network, yes: running costs per kilometre on CNG are routinely 40-50% lower than petrol, enough to recover an ₹80,000-₹85,000 premium within two to three years of typical city driving.

Why is the on-road price so much higher in Bengaluru than Delhi?

Karnataka’s one-time road tax on a new car is 13-14% of the ex-showroom price, against Delhi’s flat 4% at these prices. That difference alone adds ₹33,000 to ₹55,000 to the same car, before insurance or any dealer charge.

Does the CNG kit always mean losing boot space?

Not by the same amount on every car. The Tata Aeris loses close to half its boot to the twin-cylinder iCNG setup; the Maruti S-Presso’s CNG version keeps its boot but drops to four seats instead of five. Check the specific car’s variant page rather than assuming one number applies to all of them.