The Tata Nexon is unusual in the Indian SUV market because buyers can choose from four distinct powertrain options: petrol, diesel, CNG and electric. While the exterior design, cabin space, safety package and basic practicality remain broadly familiar, the choice of powertrain can completely change the ownership experience.

The petrol Nexon offers the widest choice of transmissions, the diesel remains attractive for high-mileage highway users, the CNG version focuses on low running costs without giving up much of the Nexon's performance, while the EV delivers the smoothest driving experience and the lowest energy cost when charged at home.

So, which Tata Nexon should you buy in 2026? The answer depends less on the Nexon's features and more on where, how much and how often you drive.

Tata Nexon Petrol vs Diesel vs CNG vs EV: At a Glance

Powertrain	Engine/Battery	Power	Key Transmission	Real-World Efficiency/Range	Approx. Running Cost
Petrol	1.2L turbo, 3-cylinder	120hp / 170Nm	5MT, 6MT, 6AMT, 7DCA	7.7kpl city / 13.9kpl highway*	₹9.46/km*
Diesel	1.5L turbo, 4-cylinder	115hp / 260Nm	6MT, 6AMT	17.95kpl*	₹5.30/km*
CNG	1.2L turbo, 3-cylinder	100hp / 170Nm	6MT	15.1km/kg city / ~24km/kg highway*	₹4.28/km*
EV	30kWh / 45kWh		Automatic	200km+ / ~350km real-world*	From ₹1.03/km*

Real-world figures and running costs are based on Autocar India's testing and assumptions, so actual costs will vary with fuel/electricity prices, traffic, driving style and charging conditions. 

Tata Nexon Petrol : The Most Flexible Choice

The 1.2-litre three-cylinder turbo-petrol produces 120hp and 170Nm and is available with an unusually broad range of transmissions: a 5-speed manual, 6-speed manual, 6-speed AMT and 7-speed dual-clutch automatic.

This makes the petrol Nexon the most flexible version in the range. Buyers who want a conventional manual can choose one, while those spending most of their time in traffic can opt for an automatic.

The engine also gets Eco, City and Sport modes. Its performance is adequate for everyday driving, although refinement and outright performance aren't class-leading.

The 7-speed DCA is the petrol version to pick

Among the petrol variants, the 7-speed DCA is arguably the most polished combination. Its wet-clutch dual-clutch transmission prioritises smoothness rather than aggressive shifts, making it well suited to urban driving.

The top-spec petrol DCA also gets the most equipment among the ICE versions and is the only ICE Nexon variant with ADAS. However, this convenience comes at a cost.

Autocar's test car returned 7.7kpl in the city and 13.9kpl on the highway, translating to an estimated running cost of ₹9.46 per kilometre the highest among the four Nexon powertrain options.

Best for: Buyers who want maximum transmission choice, predominantly mixed usage and don't mind higher fuel expenditure.

Also Read: Best Electric Scooters in India 2026: Ather vs Ola vs TVS vs Bajaj vs Vida

Tata Nexon Diesel: Still the Highway Specialist

Despite diesel's declining popularity in the passenger-car market, Tata continues to offer the Nexon with its 1.5-litre four-cylinder turbo-diesel.

The engine produces 115hp and 260Nm and is available with a 6-speed manual or 6-speed AMT. The high torque output and strong mid-range make the diesel particularly well suited to highway driving and fully loaded trips.

Unlike many modern diesels that use an SCR system with a urea/AdBlue tank, Tata uses a Lean NOx Trap emissions-control system. That means owners don't have to deal with periodic AdBlue refills.

The bigger advantage, however, is efficiency. Autocar's diesel-manual test returned 17.95kpl, resulting in a running cost of approximately ₹5.30 per kilometre.

The diesel isn't the smoothest or quietest engine in the Nexon range, but its strong torque delivery and fuel efficiency make it particularly attractive for people covering substantial distances every year.

Best for: Frequent highway users, high annual mileage and buyers who prioritise torque and fuel economy.

Tata Nexon EV: The Smoothest and Quietest Option

The Nexon EV fundamentally changes the character of the SUV. Instead of an internal-combustion engine and conventional gearbox, it uses an electric motor and is available with 30kWh and 45kWh battery packs.

The smaller battery can deliver a little over 200km of real-world range, while the 45kWh version can manage around 350km in real-world conditions, according to Autocar's testing.

The 45kWh version is also more than simply a larger battery. It uses Tata's newer Gen 2 motor, which is lighter, more compact and more efficient than the Gen 1 motor used with the 30kWh battery.

The 45kWh Nexon EV is better for longer trips

The larger battery also has a major charging advantage. Autocar found that the 30kWh version takes around an hour to charge from 20 to 80 percent using DC fast charging, while the 45kWh version can complete the same process in approximately 29 minutes.

The EV also has some equipment advantages, including a 12.3-inch touchscreen, rear disc brakes and an electronic parking brake with auto-hold.

Running costs are where the Nexon EV really separates itself. At an assumed home electricity cost of ₹8 per unit, the 45kWh version works out to roughly ₹1.03 per kilometre. Even using public DC charging at the rates considered in Autocar's test, the estimated cost was about ₹3.34 per kilometre.

Best for: Urban users with reliable home charging, regular daily driving and buyers looking for the smoothest Nexon experience.

Also Read: Best Midsize Sedan in India 2026: Verna vs City vs Virtus vs Slavia

Tata Nexon CNG: The Value Sweet Spot

The Nexon CNG is arguably the most interesting compromise in the range.

It uses the same basic 1.2-litre turbocharged three-cylinder engine as the petrol model but produces 100hp and 170Nm while running on CNG. It is paired with a 6-speed manual gearbox. Tata's turbo-CNG setup is particularly notable because it combines turbocharging with CNG while retaining the full 170Nm torque figure.

In everyday driving, the CNG Nexon retains much of the petrol version's tractability, so buyers aren't making the same level of performance compromise associated with some conventional CNG vehicles.

CNG delivers the lowest running cost among the ICE versions

Autocar recorded 15.1km/kg in city driving and nearly 24km/kg on the highway. The resulting average running cost was approximately ₹4.28 per kilometre, making it the most economical internal-combustion Nexon.

It also retains much of the Nexon's practicality and equipment, rather than feeling like a stripped-down economy version.

The main disadvantage is infrastructure. If CNG stations aren't conveniently available along your regular routes, the financial advantage can quickly become less useful.

Best for: Buyers wanting low running costs without switching to an EV and those with convenient access to CNG stations.

Which Tata Nexon Powertrain Should You Buy?

There isn't one universally correct answer.

Choose the Petrol Nexon if:

You want the widest choice of variants and transmissions and regularly drive in a mixture of city and highway conditions. The 7-speed DCA is particularly appealing if automatic convenience is important.

Choose the Diesel Nexon if:

You regularly cover long highway distances or high annual mileage. Its strong torque and tested 17.95kpl efficiency make it the logical choice for long-distance users.

Choose the Nexon EV if:

You primarily drive in the city, have reliable home charging and want the lowest energy cost and smoothest driving experience. The 45kWh version makes the strongest case if you also plan occasional longer trips.

Choose the CNG Nexon if:

You want an ICE vehicle with low running costs and have easy access to CNG stations. It offers a particularly strong balance between purchase price, practicality, performance and operating cost.

Tata Nexon CNG vs EV: Which Is Cheaper to Run?

The EV has the clear advantage when it can be charged at home. Using the test assumptions, the 45kWh Nexon EV costs around ₹1.03/km on home electricity, compared with approximately ₹4.28/km for the CNG and ₹5.30/km for the diesel.

However, running cost alone shouldn't decide the purchase.

An EV requires access to charging infrastructure, while CNG depends on the availability of filling stations. For someone without home charging, the practical advantage of an EV can be considerably smaller.

The right comparison is therefore running cost + purchase price + charging/refuelling convenience + annual mileage, rather than fuel cost alone.

Tata Nexon Petrol vs Diesel vs CNG vs EV: Our Verdict

The petrol Nexon remains the easiest all-round choice because of its broad transmission and variant range, but it is also the most expensive to run in everyday fuel costs.

The diesel Nexon makes the most sense for high-mileage drivers. Its strong torque and excellent tested fuel economy give it a clear advantage on highways.

The Nexon EV is the most refined and potentially the cheapest to operate, particularly with home charging. The 45kWh version is the stronger choice for buyers who want more usable range and faster DC charging.

But for a buyer looking for the best balance between purchase cost, performance, practicality and running expenses, the Nexon CNG is arguably the sweet spot. It retains the familiar Nexon driving character while delivering the lowest running cost among the ICE options.

In simple terms:

City + home charging → EV
Highway + high mileage → Diesel
Low-cost ICE ownership → CNG
Maximum flexibility → Petrol

That is what makes the Nexon unusual: instead of forcing every buyer into the same powertrain, Tata has created four versions of essentially the same SUV for four very different types of owners.

Frequently Asked Questions

Which Tata Nexon has the lowest running cost?

The Nexon EV has the lowest energy cost when charged at home. Autocar's calculation for the 45kWh version works out to about ₹1.03/km using ₹8 per unit of electricity. Among the ICE versions, the CNG Nexon has the lowest tested running cost at around ₹4.28/km.

Is Tata Nexon CNG better than petrol?

The CNG version makes more sense for buyers who prioritise running costs and have convenient access to CNG stations. The petrol version offers substantially more transmission choices, including AMT and DCA, while the CNG is currently offered with a 6-speed manual.

Which Nexon is best for highway driving?

The diesel is the strongest choice for frequent highway use because of its 260Nm torque, strong performance and tested 17.95kpl efficiency. The 45kWh EV is also suitable for highway use if charging infrastructure along the route is reliable.

What is the real-world range of the Tata Nexon EV?

The 30kWh version can deliver a little over 200km in real-world conditions, while the 45kWh version can manage around 350km according to Autocar's testing.

Which Nexon has the best performance?

Among the ICE versions, the diesel's strong torque delivery makes it particularly effective in real-world highway driving. The EV, however, delivers the smoothest and most immediate acceleration because of its electric powertrain.

Is Tata Nexon CNG good for long-distance driving?

Yes. Its highway efficiency can approach 24km/kg in favourable conditions, and the turbocharged engine retains useful performance. The main consideration is whether CNG stations are conveniently available along your regular long-distance routes.

Which Tata Nexon should I buy in 2026?

For most buyers, the answer depends on usage: CNG for economical ICE ownership, EV for urban driving with home charging, diesel for high-mileage highway use and petrol for maximum flexibility.