For buyers in India, fuel efficiency remains one of the biggest factors when choosing a new car. Maruti Suzuki continues to offer several powertrains aimed at low running costs, including petrol, S-CNG and, in the WagonR’s case, a flex-fuel option introduced in 2026.
Among the four models compared here, the Maruti Suzuki Dzire currently has the highest officially stated CNG fuel-efficiency figure at 36.47 km/kg with its new automatic S-CNG powertrain. The WagonR remains highly efficient at up to 34.05 km/kg with S-CNG, while the Swift offers up to 32.85 km/kg with its manual S-CNG setup. The larger seven-seat Ertiga returns up to 26.11 km/kg in CNG form.
These figures are India’s certified fuel-efficiency figures, not guarantees of real-world mileage. Driving conditions, traffic, load, tire pressure, air-conditioning use and driving style can all affect actual fuel consumption.
Maruti Suzuki Mileage Comparison for 2026
The following figures apply to the Indian market and are based on Maruti Suzuki’s published specifications and announcements.
| Model | Powertrain | Transmission | Official fuel efficiency |
|---|---|---|---|
| Maruti Suzuki Dzire | 1.2L S-CNG | 5-speed AMT | 36.47 km/kg |
| Maruti Suzuki WagonR | 1.0L S-CNG | 5-speed MT | 34.05 km/kg |
| Maruti Suzuki Swift | 1.2L S-CNG | 5-speed MT | 32.85 km/kg |
| Maruti Suzuki Ertiga | 1.5L S-CNG | 5-speed MT | 26.11 km/kg |
| Maruti Suzuki Swift | Petrol | 5-speed AMT | 25.75 km/l |
| Maruti Suzuki Dzire | Petrol | 5-speed AGS/AMT | 25.71 km/l |
| Maruti Suzuki WagonR | 1.0L Petrol | AGS | 25.19 km/l |
| Maruti Suzuki Ertiga | Petrol | 5-speed MT | 20.51 km/l |
CNG and petrol figures use different units, so 36.47 km/kg cannot be directly treated as equivalent to 36.47 km/l. The figures are best understood within their respective fuel types.
1. Maruti Suzuki Dzire: Highest Mileage Among These Four in 2026
The Dzire has become particularly interesting for mileage-focused buyers because Maruti Suzuki introduced an automatic S-CNG version in September 2026.
The new automatic S-CNG Dzire uses the 1.2-liter Z12E engine with Idle Start-Stop technology and a five-speed Auto Gear Shift transmission. Maruti Suzuki states a certified fuel-efficiency figure of 36.47 km/kg, with the certification attributed to JATO Dynamics dated September 18, 2026.
That gives the Dzire a different proposition from the earlier S-CNG model. The company’s earlier published figure for the manual S-CNG Dzire was 33.73 km/kg, while the petrol manual and AGS versions were rated at 24.79 km/l and 25.71 km/l respectively.
Dzire mileage at a glance
- Petrol MT: 24.79 km/l
- Petrol AGS: 25.71 km/l
- S-CNG: 33.73 km/kg for the previously published manual version
- New automatic S-CNG: 36.47 km/kg
The new automatic CNG figure is particularly relevant for city drivers who want two-pedal convenience without giving up the fuel-cost advantages associated with CNG.
The Dzire also uses a 1.2-liter Z-Series engine. Maruti Suzuki lists 60 kW and 111.7 Nm for the petrol configuration, while the S-CNG version is listed at 51.3 kW and 101.8 Nm.
For buyers who want a sedan rather than a hatchback, the Dzire combines its efficiency with a conventional four-door layout and a larger trunk-oriented design.
2. Maruti Suzuki WagonR: 34.05 km/kg With S-CNG
The WagonR remains one of Maruti Suzuki’s strongest mileage-focused choices, particularly in S-CNG form.
Maruti Suzuki lists 34.05 km/kg for the WagonR S-CNG. The factory-fitted CNG system is paired with the 1.0-liter K-Series engine and a five-speed manual transmission.
The WagonR also offers petrol powertrains. Maruti Suzuki’s published figures include 25.19 km/l for the 1.0-liter petrol version with AGS and 24.43 km/l for the 1.2-liter petrol AGS configuration.
WagonR mileage at a glance
- 1.0L Petrol AGS: 25.19 km/l
- 1.2L Petrol AGS: 24.43 km/l
- 1.0L S-CNG MT: 34.05 km/kg
The WagonR’s appeal is not only its efficiency. Its tall hatchback body provides a practical cabin and relatively easy access, making it suited to buyers who spend much of their time in urban traffic.
The 2026 WagonR also has another notable development: Maruti Suzuki introduced a flex-fuel version capable of running on ethanol-petrol blends from E20 to E100. However, that technology should not be treated as a direct replacement for the WagonR’s published S-CNG mileage figure.
3. Maruti Suzuki Swift: Up to 32.85 km/kg on CNG
The Swift remains a mileage-focused premium hatchback, with both petrol and CNG choices in India.
Maruti Suzuki currently lists the petrol Swift at 24.8 km/l with the manual transmission and 25.75 km/l with AMT. Its S-CNG version is rated at 32.85 km/kg.
The Swift S-CNG uses the 1.2-liter Z-Series engine and was originally introduced with a five-speed manual transmission. Maruti Suzuki’s launch announcement quoted the certified efficiency at 32.85 km/kg.
There is an important 2026 update, however. In September 2026, Maruti Suzuki launched an automatic S-CNG version of the Swift as part of its Auto Green Mission. It uses the Z12E 1.2-liter engine, Idle Start-Stop technology and a five-speed Auto Gear Shift transmission.
Maruti Suzuki’s September announcement confirms the automatic Swift S-CNG launch, but it does not publish a specific Swift automatic-CNG mileage figure in that announcement. Therefore, the 32.85 km/kg figure should not automatically be applied to the new automatic version.
Swift mileage at a glance
- Petrol MT: 24.8 km/l
- Petrol AMT: 25.75 km/l
- S-CNG MT: 32.85 km/kg
- S-CNG AMT: Introduced in September 2026; specific certified mileage not stated in the cited launch announcement
The Swift is therefore particularly relevant to buyers who want a smaller hatchback with a more compact footprint while still having the option of CNG.
4. Maruti Suzuki Ertiga: 26.11 km/kg With Seven Seats
The Ertiga plays a different role in this comparison.
It is a seven-seat MPV, so its mileage figures should be viewed in the context of its larger size and passenger-carrying capability rather than directly against smaller hatchbacks.
Maruti Suzuki lists the Ertiga at 20.51 km/l for petrol manual variants, while the CNG versions are rated at 26.11 km/kg. The petrol automatic versions are listed at 20.30 km/l.
Ertiga mileage at a glance
- Petrol MT: 20.51 km/l
- Petrol AT: 20.30 km/l
- S-CNG MT: 26.11 km/kg
The Ertiga uses a 1.5-liter K-Series Dual Jet, Dual VVT engine with Progressive Smart Hybrid technology in its petrol configuration. Its CNG powertrain is the efficiency-focused alternative for buyers who regularly carry passengers and want to reduce fuel costs.
The biggest advantage here is practicality. The Ertiga offers three rows of seating, with Maruti Suzuki quoting 209 liters of luggage space behind the third row and up to 803 liters with the third row folded.
For a family that needs seven seats, comparing its 26.11 km/kg CNG figure directly with a small hatchback’s CNG figure misses the bigger picture.
Which Maruti Suzuki Has the Best Mileage in 2026?
If the comparison is based strictly on the highest currently published certified CNG figure among these four models, the Dzire comes first with 36.47 km/kg in its new automatic S-CNG configuration.
The WagonR follows with 34.05 km/kg, while the Swift’s published manual S-CNG figure is 32.85 km/kg. The Ertiga’s 26.11 km/kg is lower, but it is also a substantially larger seven-seat vehicle.
A more useful way to look at the four is by the type of buyer:
| Model | Best suited to |
|---|---|
| Dzire | Buyers wanting high efficiency plus sedan practicality and automatic CNG convenience |
| WagonR | Buyers prioritizing low running costs and urban practicality |
| Swift | Buyers wanting a compact hatchback with efficiency and a more driver-focused character |
| Ertiga | Families needing seven seats while keeping fuel costs under control |
This is not a ranking of which car is universally better. The right choice depends heavily on whether the priority is running cost, body style, passenger capacity, automatic convenience or overall practicality.
Petrol vs. CNG: Which Makes More Sense?
The mileage numbers show why CNG remains important in Maruti Suzuki’s Indian lineup.
For the Swift, for example, the published petrol figure reaches 25.75 km/l with AMT, compared with 32.85 km/kg for the manual S-CNG version. The WagonR’s 1.0-liter petrol AGS figure is 25.19 km/l compared with 34.05 km/kg for S-CNG.
However, fuel-efficiency numbers alone do not determine running costs.
Petrol is sold by the liter, while CNG is sold by the kilogram. Fuel prices also vary between cities and can change over time. A buyer therefore needs to consider the local price of each fuel as well as the vehicle’s certified efficiency.
CNG can make particular sense for drivers who cover high annual mileage and have convenient access to CNG stations. Petrol can be more convenient for drivers who regularly travel to locations where CNG availability is limited.
What About Real-World Mileage?
Official fuel-efficiency figures are useful for comparing vehicles under standardized testing conditions, but they should not be interpreted as guaranteed everyday mileage.
Actual results can vary because of:
- Traffic congestion
- Average speed
- Driving style
- Road conditions
- Vehicle load
- Tire pressure
- Air-conditioning use
- Weather
- Fuel quality
- Frequency of stop-and-go driving
A car that is rated at a particular efficiency figure may therefore deliver a different result in everyday driving.
For that reason, it is better to use the certified figure as a consistent comparison point rather than as a promise of what every owner will achieve.
Which One Should You Choose?
Choose the Dzire if mileage is your primary priority
The Dzire has the highest officially stated CNG efficiency of these four models after the September 2026 introduction of its automatic S-CNG version. Its sedan body also makes it a practical option for buyers who prefer a traditional four-door car.
Choose the WagonR for simple urban efficiency
The WagonR’s 34.05 km/kg S-CNG figure, compact dimensions and tall hatchback design make it particularly relevant for city-focused buyers looking for low fuel consumption and everyday practicality.
Choose the Swift if you want an efficient hatchback
The Swift combines a relatively compact hatchback format with a 1.2-liter petrol engine, AMT availability and S-CNG technology. Its published 32.85 km/kg manual-CNG figure makes it one of the more efficient choices in this group.
Choose the Ertiga if you need seven seats
The Ertiga does not have the highest mileage figure in this comparison, but it offers something the other three do not: three rows of seating. Its 26.11 km/kg CNG rating is therefore best understood as efficient for a seven-seat MPV rather than compared purely on the number.
The Bottom Line
For Maruti Suzuki cars with the best mileage in India in 2026, the latest figures make the comparison more interesting than simply looking at petrol efficiency.
The Dzire leads this four-car group on the latest published CNG figure at 36.47 km/kg, following the introduction of its automatic S-CNG version in September 2026. The WagonR delivers 34.05 km/kg, the Swift is rated at 32.85 km/kg with manual S-CNG, and the Ertiga returns 26.11 km/kg while providing seven seats.
For petrol buyers, the Swift’s 25.75 km/l AMT figure and Dzire’s 25.71 km/l AGS figure are among the strongest numbers in this particular comparison.
The important distinction is that the highest mileage figure is not automatically the best choice for every buyer. A small hatchback, sedan and seven-seat MPV serve different needs. Fuel availability, annual driving distance, passenger requirements and preference for manual or automatic driving should all be considered alongside the certified efficiency figure.
Frequently Asked Questions
Which Maruti car has the highest mileage in 2026?
Among the Swift, Dzire, WagonR and Ertiga, the Dzire has the highest currently published certified CNG efficiency at 36.47 km/kg with its automatic S-CNG powertrain.
Which Maruti car gives 34.05 km/kg mileage?
The Maruti Suzuki WagonR S-CNG is rated at 34.05 km/kg with its 1.0-liter CNG powertrain and manual transmission.
What is the mileage of the Maruti Suzuki Swift in 2026?
Maruti Suzuki lists the Swift at 24.8 km/l with the petrol manual, 25.75 km/l with petrol AMT and 32.85 km/kg with S-CNG manual. An automatic S-CNG Swift was introduced in September 2026, but the cited launch announcement does not state a specific certified mileage figure for that automatic version.
What is the mileage of the Maruti Suzuki Dzire CNG?
The previously published manual S-CNG Dzire figure is 33.73 km/kg. In September 2026, Maruti Suzuki introduced an automatic S-CNG Dzire with a certified figure of 36.47 km/kg.
What is the mileage of the Maruti Suzuki Ertiga CNG?
The Maruti Suzuki Ertiga S-CNG is rated at 26.11 km/kg. Its petrol manual version is rated at 20.51 km/l.
Are these mileage figures the same as real-world mileage?
No. These are certified fuel-efficiency figures used for comparison. Actual mileage can vary depending on traffic, driving conditions, load, tire pressure, air-conditioning use and driving style.
Is CNG better than petrol for mileage?
CNG versions generally have higher published efficiency figures when measured in km/kg, but km/kg and km/l are different units and should not be compared as if they were identical. The actual running-cost advantage also depends on local petrol and CNG prices.
Sources & References
- Maruti Suzuki — Auto Green Mission: Automatic S-CNG Swift, Dzire and Baleno
- Maruti Suzuki — Swift official model page
- Maruti Suzuki — Dzire official model page
- Maruti Suzuki — S-CNG technology and model efficiency figures
- Maruti Suzuki — WagonR launch and fuel-efficiency details
- Maruti Suzuki — Swift S-CNG launch announcement
- Maruti Suzuki — Ertiga official model page
- Maruti Suzuki — Ertiga official brochure