Tata Altroz Mileage Comparison: Petrol vs CNG vs Diesel

The Tata Altroz is gaining popularity among Indian consumers due to its three fuel options: petrol, CNG, and diesel. It is because of this that the mileage comparison discussion becomes extremely important. As a buyer, you need to decide the type of fuel that would best suit your driving style, location, and how much you are willing to spend on your car.

The petrol variant has three options: manual transmission, automatic transmission and dual-clutch automatic transmission (DCA). The CNG version comes with either a manual or automatic transmission option, and the diesel version has only a manual transmission.

For most city buyers, the petrol Altroz is the simplest choice. For high daily running, the Altroz CNG offers the lowest fuel cost. For frequent highway users, the diesel Altroz still makes a strong case because of its torque and efficiency. 

Tata Altroz Mileage Comparison

Arguably, the highest efficiency car in the Altroz range is the CNG variant. For longer distances, the diesel variant provides excellent performance, whereas the petrol has the advantage of being less complicated to drive if you are only doing an average monthly distance.

Also Read: Tata Altroz Variants Guide: Choose the Best Variant

Tata Altroz Petrol Mileage

The facelifted Tata Altroz petrol uses a 1.2-litre naturally aspirated petrol engine. It produces 88 PS and 115 Nm, and is available with manual, AMT and DCA automatic gearbox options.

The Tata Altroz’s manual petrol version has a mileage of 19.33 kilometres per litre as confirmed by ARAI. The automatic version gives drivers approximately 18.50 km/l. When using the Altroz in the real world, you can expect to achieve approximately 12 to 14 km/l when driving in heavy city traffic, and generally between 16 and 18 km/l when travelling on high-speed roads.

This makes the petrol Altroz a good fit for buyers who mostly drive within the city and occasionally take highway trips. It also keeps ownership simple because the purchase price is lower than the CNG and diesel versions.

Choose the Tata Altroz petrol if:

• Your monthly running is moderate
• You want the widest transmission choice
• You need the full 345-litre boot
• You want lower upfront cost than CNG or diesel
• You do not want to depend on CNG station availability

The petrol manual is a great choice for those buyers who want to pay less and have more control over their fuel consumption. In heavy traffic situations, the AMT will give you more convenience. In terms of driving performance, the DCA is the best option that makes for a more refined driving experience when compared to the AMT.

Tata Altroz CNG Mileage

The Tata Altroz iCNG is the most cost-efficient option in the line-up. It uses the same 1.2-litre petrol engine, but in CNG mode, the output drops to around 72.4 PS and 103 Nm.

The facelifted Tata Altroz CNG claims to have a fuel consumption of 26.90 km/kg. However, how much fuel the vehicle will use during normal driving conditions is subject to several variables such as the driver’s style, load carried, use of air conditioning, road conditions, and weather. In independent tests using actual vehicles, the CNG Altroz used 19.80 km/KG in the city, 34.58km/KG on the highway, and an overall average of 23.49 km/KG.

The biggest advantage of the Altroz CNG is Tata’s twin-cylinder CNG setup. Instead of using one large cylinder that takes up most of the boot, the Altroz uses two smaller cylinders under the boot floor. This gives the CNG version 210 litres of boot space. That is lower than the petrol and diesel versions, but still more usable than many older CNG hatchback layouts.

Tata’s addition of a CNG AMT option for the Altroz in 2026 made it a better choice for those in cities who need to save money on fuel but don’t want to use a manual transmission on their cars each day.

Choose the Tata Altroz CNG if:

• You drive high kilometres every month
• CNG pumps are easily available near your home or office
• Fuel cost matters more than outright performance
• You want the option of CNG with AMT convenience
• You can manage with reduced boot space

The CNG Altroz is not the fastest option available in the Altroz range, but it provides smart value overall to users seeking efficient operating costs. All-day city users will benefit from the new CNG AMT as one of its most beneficial updates.

Also Read: Complete Guide to Buying a Tata Altroz

Tata Altroz Diesel Mileage

The Tata Altroz diesel is powered by a 1.5-litre turbocharged diesel engine. It produces 90 PS and 200 Nm, and is available with a 5-speed manual gearbox.

The official fuel economy figure for the Tata Altroz diesel variant is 23.60 kmpl. Based on your driving habits (e.g., city versus long distance), load carried in the vehicle, degree of traffic experienced, etc., you can generally anticipate between 18–22 kmpl when on the road.

The diesel Altroz is not just about mileage. Its biggest advantage is torque. With 200 Nm, it feels stronger on highways, inclines, and during overtakes, making it a preferred choice for buyers who regularly travel long distances or carry passengers and luggage.

Additionally, the full 345 litres of boot size is available for this car’s standard version, which won’t be found with the CNG model. However, as it only offers the manual gearbox variant (and this variant costs more than the petrol equivalent), it is not the most popular car in the lineup.

Choose the Tata Altroz diesel if:

• You drive frequently on highways
• You cover high monthly kilometres
• You want stronger pulling power
• You travel with passengers or luggage often
• You are comfortable with a manual gearbox

The diesel Altroz is the best option for people who want mileage and highway performance together.

Tata Altroz Petrol vs CNG vs Diesel: Key Differences

Which Tata Altroz Mileage Option Should You Buy?

If you don’t drive more than 800km each month, then go for the petrol version of the Altroz as the savings you’ll get from CNG or diesel do not compensate for the higher initial cost.

If you drive around 1,000–1,500 km a month and have easy CNG access, the Altroz CNG makes more sense. It will help lower your fuel bills, and the CNG AMT now makes it easier to drive in traffic.

If you often drive long distances, then the diesel variant of the Altroz is really the best option due to its great fuel consumption, better highway performance, and a large boot for transporting items.

Final Verdict

The best Tata Altroz mileage option depends on your driving pattern.

For the majority of consistent purchasers, the Petrol Altroz is the best selection regarding safety and ease. The Manual version has a rated fuel mileage of 19.33 km, and the DCA Automatic’s rated fuel mileage is 18.50 km. Based on realistic conditions, it can be estimated that the vehicle will provide approximately 12-14km/l in the city, and 16-18km/l on the highway.

For high daily running, the Altroz CNG is the most economical choice. Its 26.90 km/kg claimed mileage and CNG AMT option make it especially useful for city commuters.

For those who drive primarily on highways, the diesel version of the Altroz is an excellent choice because of its fuel efficiency (23.60 km/l), torque (200 Nm) and ample trunk space. All of which gives it an advantage for long-distance travel.

So, choose petrol for balanced use, CNG for low running cost, and diesel for frequent highway travel.

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