The Maruti Ertiga and Toyota Rumion, which are both based on the same platform, engine family, and gear transmission, are perhaps the closest MPV comparatives in India. They are both fitted with the same 1.5-litre petrol engine complete with manual and torque-converter automatic gear options, as well as a factory-installed CNG system. Both vehicle manufacturers claim that their petrol variant manual models deliver the same mileage of 20.51km/l, while their CNG models’ mileage remains the same at 26.11km/kg. Hence, the question that must be answered is not whether one of them is mechanically better, but which one is more fuel-efficient in real-life usage mileage and expenses incurred.
The distinction also matters for buyers comparing ownership rather than specifications alone. Since the drivetrain hardware is shared, maintenance habits, tyre condition, and how heavily the MPV is loaded can create a bigger mileage swing than the model badge itself. A seven-seat family using the car mostly in congested city traffic may see noticeably lower numbers than an owner doing long highway runs, even when both cars are technically capable of the same efficiency.
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Maruti Ertiga vs Toyota Rumion Specs
The Maruti Ertiga gets a 1,462cc engine with four cylinders producing about 103 horsepower and 136.8Nm of torque. The petrol variants are equipped with either a 5-speed manual gearbox or a 6-speed automatic gearbox using torque-converter technology, with the CNG model being solely manual and rated at 87.8hp and 121.5Nm of torque in gas mode. The Ertiga comes with front-wheel drive and a fuel tank capacity of 45 litres, and has a wheelbase of 2,740 mm. Depending on the specific variant, the petrol variants weigh between 1,150 and 1,205 kg.
The Toyota Rumion uses essentially the same 1,462cc K-Series engine, producing around 103hp and 137Nm in petrol form. It too is available with a 5-speed manual or 6-speed automatic, while the CNG version uses a 5-speed manual and produces lower output in CNG mode. The Rumion also has a 45-litre petrol tank and the same 2,740mm wheelbase, so the two MPVs are almost identical mechanically.
| Specification | Maruti Ertiga | Toyota Rumion |
| Engine | 1.5L petrol / CNG | 1.5L petrol / CNG |
| Displacement | 1,462cc | 1,462cc |
| Power | 103hp petrol / 87.8hp CNG | ~103hp petrol / ~88hp CNG |
| Torque | 136.8Nm petrol / 121.5Nm CNG | ~137Nm petrol / 121.5Nm CNG |
| Transmission | 5MT / 6AT | 5MT / 6AT |
| Drive layout | FWD | FWD |
| Fuel tank | 45 litres | 45 litres |
| Wheelbase | 2,740mm | 2,740mm |
There are no significant mechanical reasons for one of them to be much more efficient than the other. The minor differences in exterior style and weight simply do not account for an important difference in fuel economy in normal usage.
Maruti Ertiga vs Toyota Rumion ARAI Mileage Figures
The Ertiga petrol manual claims 20.51 km/l, while the petrol automatic is rated at around 20.30 km/l. The CNG version is rated at 26.11 km/kg. The gap between manual and automatic is extremely small on paper, which reflects how efficiently the 6-speed torque-converter gearbox has been calibrated for relaxed everyday driving.
The Rumion with a manual transmission records exactly the same efficiency figure at 20.51 km/l as the manual version, while the automatic claims to provide 20.11 km/l in fuel economy. As for the CNG version, its number is identical to that of the Ertiga at 26.11 km/kg; thus, the difference between the two automatic figures is only 0.19 km/l, which is so small that it should not be used to draw any conclusions about the efficiency of one MPV compared to the other.
| Car | Engine & Transmission | Fuel Type | ARAI Mileage |
| Maruti Ertiga | 1.5L petrol, 5MT | Petrol | 20.51 km/l |
| Maruti Ertiga | 1.5L petrol, 6AT | Petrol | 20.30 km/l |
| Maruti Ertiga | 1.5L CNG, 5MT | CNG | 26.11 km/kg |
| Toyota Rumion | 1.5L petrol, 5MT | Petrol | 20.51 km/l |
| Toyota Rumion | 1.5L petrol, 6AT | Petrol | 20.11 km/l |
| Toyota Rumion | 1.5L CNG, 5MT | CNG | 26.11 km/kg |
On official numbers, the manual and CNG versions are exact ties. Even the automatics are effectively tied, with less than 1 per cent separating their claimed efficiency.
Also Read: Maruti Ertiga Mileage Comparison: Petrol vs CNG
Maruti Ertiga vs Toyota Rumion Real-World Fuel Efficiency
Current Ertiga data puts the petrol manual at around 18.77 km/l combined, while the petrol automatic sits near 17.97 km/l. The CNG version has a current owner-reported combined figure around 23 km/kg, while an instrumented mixed-driving test returned roughly 22.32 km/kg. These figures show that the Ertiga remains efficient in everyday use, particularly in manual and CNG form.
The Rumion has been tested for fuel efficiency in its petrol-automatic form and posted results of 14 km/l and 19 km/l for city and highway driving respectively, giving a combined figure of about 16.55 km/l. No clean performance test has been conducted on the manual or CNG variants of the Rumion so far, which means the virtually identical Ertiga continues to be the most relevant benchmark for those versions. The base point is that both performances of the Rumion reported by users come from different tests, which precludes any possibility of concluding that the Ertiga is technically more advanced.
| Ertiga Petrol MT | Rumion Petrol MT* | Ertiga Petrol AT | Rumion Petrol AT | |
| Combined reference | ~18.77 km/l | ~18.77 km/l | ~17.97 km/l | ~16.55 km/l |
| Fuel tank | 45L | 45L | 45L | 45L |
| Approx. range | ~845 km | ~845 km | ~809 km | ~745 km |
*Rumion manual uses the mechanically identical Ertiga powertrain as its real-world reference.
Practically speaking, if one is using the two vehicles in the same conditions as an average owner, he should expect very similar performance in terms of fuel efficiency. The gap of 1-2 km/l can be attributed to the driver’s behaviour or other variables like driving style, road, tyre pressure, AC usage, and passenger weight.
Read More: Maruti Suzuki Ertiga Real World Mileage
Maruti Ertiga vs Toyota Rumion Fuel Cost Comparison
For this comparison, we have assumed 1,500 km of driving every month, equal to 18,000 km annually. Petrol is calculated at approximately ₹102.12 per litre and CNG at around ₹86.98 per kg in New Delhi in September 2026. The calculations use real-world combined mileage rather than ARAI figures, so the ownership-cost comparison stays practical.
Petrol Manual Fuel Cost
Using the same 18.77 km/l real-world reference for both manual versions:
| Maruti Ertiga MT | Toyota Rumion MT | |
| Monthly Running | 1,500 km | 1,500 km |
| Reference Mileage | 18.77 km/l | 18.77 km/l |
| Monthly Fuel Use | 79.9 litres | 79.9 litres |
| Monthly Fuel Cost | ₹8,161 | ₹8,161 |
| Annual Fuel Cost | ₹97,900 | ₹97,900 |
| 5-Year Fuel Cost | ₹4.90 lakh | ₹4.90 lakh |
In actual practice, the two vehicles do not show any cost differential because they consume the same amount of fuel on the same route. Thus, for 18,000 km of driving per year, both vehicles will need roughly the same amount of petrol at about the same cost over the period of five years.
Petrol Automatic Fuel Cost
Using the available current real-world references:
| Maruti Ertiga AT | Toyota Rumion AT | |
| Reference Mileage | 17.97 km/l | 16.55 km/l |
| Monthly Fuel Use | 83.5 litres | 90.6 litres |
| Monthly Fuel Cost | ₹8,524 | ₹9,256 |
| Annual Fuel Cost | ₹1.02 lakh | ₹1.11 lakh |
| 5-Year Fuel Cost | ₹5.11 lakh | ₹5.55 lakh |
There is roughly a ₹730 per month difference between the two cars. But this must not be read as a definitive Ertiga advantage due to the fact that the mileage quotes were gathered in different tests. Since the engine, transmission, and body structure are for all intents and purposes identical, a direct owner-to-owner comparison would probably reveal only very minor differences.
CNG Fuel Cost
Using the Ertiga’s instrumented 22.32 km/kg mixed-driving result as a shared real-world benchmark for the mechanically identical CNG setups, both MPVs would require around 67.2kg of CNG to cover 1,500km. At ₹86.98 per kg, that works out to approximately ₹5,845 per month, ₹70,100 per year, and about ₹3.51 lakh over five years.
Thus, CNG is the least expensive type of engine among the two. Compared to the petrol manual option, it potentially reduces the monthly expenses by approximately ₹2,300, accounting for up to ₹1.4 lakh in five years. If there is a user driving over 25,000 km every year, savings from the switch to a CNG engine type will quickly outstrip the minimal differences between the two petrol automatics. Hence, both MPVs are very convincingly positioned as CNG vehicles for fleet users, big families and anyone having good access to CNG stations.
Read More: Maruti Suzuki Ertiga Running Cost Breakdown: 5-Year Service Cost, Fuel Cost
Maruti Ertiga vs Toyota Rumion Price
The Ertiga is the more affordable MPV. Its current range begins at around ₹8.90 lakh ex-showroom, while the Rumion starts at approximately ₹9.79 lakh. The price gap continues through the range, even though both cars use almost identical engines and transmissions.
| Model | Variant | Price (ex-showroom) |
| Maruti Ertiga | LXi Petrol MT | ₹8.90 lakh |
| Maruti Ertiga | VXi Petrol MT | ₹9.95 lakh |
| Maruti Ertiga | VXi CNG | ₹10.94 lakh |
| Maruti Ertiga | ZXi Petrol MT | ₹11.02 lakh |
| Maruti Ertiga | VXi Petrol AT | ₹11.30 lakh |
| Maruti Ertiga | ZXi CNG | ₹12.00 lakh |
| Maruti Ertiga | ZXi+ Petrol AT | ₹13.14 lakh |
| Toyota Rumion | E Petrol MT | ₹9.79 lakh |
| Toyota Rumion | S Petrol MT | ₹10.77 lakh |
| Toyota Rumion | S CNG | ₹11.69 lakh |
| Toyota Rumion | G Petrol MT | ₹11.93 lakh |
| Toyota Rumion | S Petrol AT | ₹12.35 lakh |
| Toyota Rumion | G Petrol AT | ₹13.44 lakh |
| Toyota Rumion | V Petrol AT | ₹14.21 lakh |
As for the basic model, the Rumion is costlier than the Ertiga by almost ₹89,000 despite it being an equivalent model in the lineup, with the additional cost associated with the CNG and automatic options as well. Given that the two MPVs share very similar fuel economies, there are no fuel savings that may help recover the additional cost associated with the purchase of this vehicle. People opting for the Rumion, therefore, pay the premium in terms of brand value, as well as the experience of the dealership and ownership preference.
For value-focused buyers, this is where the Ertiga becomes difficult to ignore. It delivers essentially the same powertrain, mileage, and passenger capacity at a lower upfront cost.
Also Read: Toyota Rumion Alternatives: Competitors of Toyota Rumion
Summary
In terms of mileage, there is practically no difference between the Maruti Ertiga and the Toyota Rumion. The petrol versions of the two have the same ARAI figures of 20.51 km/l; their CNG versions also state that they provide mileage of 26.11 km/kg; the automatic vehicles have a gap of only 0.19 km/l. Thus, mechanically they are quite similar, and there actually is no considerable mileage difference between the two.
Available real-world data supports the same conclusion. The Ertiga petrol manual sits around 18.77 km/l combined, while the Rumion manual should be expected to perform similarly because it uses the same engine and gearbox. The automatic figures differ in separate tests, but those results are influenced by test conditions rather than a major engineering difference. In CNG form, both should again deliver nearly identical economy.
To sum up, price alone is what separates the two cars. While mileage is similar between the two cars, the Ertiga is cheaper for any variant comparison, thus making it a more reasonable choice. The Rumion might appeal to buyers who like all things related to Toyota, from branding to dealership to ownership,p and also wouldn’t mind paying extra for the Toyota name.
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FAQs
Q. Which has better mileage, Maruti Ertiga or Toyota Rumion?
Neither has a meaningful advantage. Both petrol manuals claim 20.51 km/l, while both CNG versions claim 26.11 km/kg. Their automatic figures are also extremely close.
Q. What is the real-world mileage of the Maruti Ertiga petrol?
The Ertiga petrol manual has a current combined reference around 18.77 km/l, while the automatic sits near 17.97 km/l. Actual mileage depends on traffic, passenger load, and driving style.
Q. What is the real-world mileage of the Toyota Rumion automatic?
The Rumion petrol automatic has returned approximately 14 km/l in city driving and 19 km/l on highways, giving a combined average of around 16.55 km/l in a direct test.
Q. Which has better CNG mileage, Ertiga or Rumion?
They are effectively tied. Both claim 26.11 km/kg officially and use the same basic CNG powertrain. A tested Ertiga reference around 22.32 km/kg is a reasonable real-world benchmark for both.
Q. Which is cheaper to run, Ertiga or Rumion?
Running costs should be almost identical for equivalent variants because the two MPVs use the same basic powertrain. CNG versions are the cheapest to fuel, followed by petrol manuals and then automatics.
Q. Which is better value, Ertiga or Rumion?
The Ertiga offers better value because it is cheaper to buy while delivering essentially the same mileage, engine performance, and seating practicality. The Rumion is better suited to buyers who specifically prefer Toyota’s brand and ownership experience.
