The Tata Nexon and the Renault Kiger are both sub-four-metre SUVs, although they have different performance and efficiency strategies. The Tata Nexon provides more choices than the Renault Kiger, with its petrol, diesel and factory CNG models, while the Kiger focuses predominantly on naturally aspirated and turbocharged petrol engines. The Kiger can claim to achieve approximately 20.38 km/l of fuel economy with its petrol engine, while the Nexon petrol manual rates at 17.44 km/l. In terms of actual driving, the Kiger’s petrol performance is greater than the Nexon’s; however, the Nexon compensates with its superior diesel and CNG engines.
The Kiger is lighter, cheaper and more economical if you want a conventional petrol SUV. The Nexon offers more power, a wider choice of transmissions and significantly lower running costs if you choose diesel or CNG. So, the better mileage choice depends largely on which fuel type suits your usage.
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Tata Nexon vs Renault Kiger Specs
The Tata Nexon is powered by a 1.2-litre three-cylinder turbocharged petrol engine that generates 120hp and 170 Nm of torque. Depending on the configuration options available, the Nexon can also be equipped with a manual, AMT, or 7-speed DCT transmission. A 1.5-litre diesel engine rated at 115hp and producing 260 Nm is available for the Nexon, again with both manual and AMT options available. The CNG-configured Nexon has a detuned version of the 1.2-litre turbo petrol engine that puts out approximately 100hp and 170 Nm.
The Renault Kiger uses a smaller 1.0-litre petrol engine. The naturally aspirated version produces 72PS and is available with manual or AMT, while the turbo-petrol produces 100PS and 160Nm and comes with a manual or CVT. The Kiger carries a 40-litre tank, compared with the Nexon’s 44 litres.
| Specification | Tata Nexon | Renault Kiger |
| Base petrol engine | 1.2L turbo-petrol | 1.0L naturally aspirated petrol |
| Turbo petrol | 120hp / 170Nm | 100PS / 160Nm |
| Diesel | 1.5L, 115hp / 260Nm | Not available |
| CNG | 1.2L turbo CNG, ~100hp | Dealer retrofit on select manuals |
| Transmission | MT / AMT / DCT | MT / AMT / CVT |
| Drive layout | FWD | FWD |
| Fuel tank | 44 litres | 40 litres |
Compared to the Renault Kiger, the Tata Nexon has the performance advantage; however, due to the weight of the Kiger being significantly less than that of the Nexon, the Kiger is focused on minimising the cost of both the petrol it consumes and the price consumers pay for the Kiger.
Tata Nexon vs Renault Kiger ARAI Mileage Figures
The Nexon petrol manual is rated at 17.44 km/l, while the petrol AMT claims 17.18 km/l and the DCT 17.01 km/l. The factory CNG version is rated at 24 km/kg. The diesel’s current figure is less prominently surfaced, but the mechanically unchanged setup has previously been certified at around 23.23 km/l for the manual and 24.08 km/l for the AMT.
When looking at petrol models, Kiger offers superior fuel efficiency than the Nexon does. For both naturally aspirated manual and AMT models, Kiger’s figures range around 19.83 km/l; Kiger’s turbo has a maximum figure of approximately 20.38 km/l (approximately 1 km/l more, depending on the vehicle). Turbo CVT Kiger has a lower fuel efficiency rating of 17.63 km/l, which puts it almost on par with Nexon’s automatic petrol models.
| Car | Engine & Transmission | Fuel Type | ARAI Mileage |
| Tata Nexon | 1.2L petrol MT | Petrol | 17.44 km/l |
| Tata Nexon | 1.2L petrol AMT | Petrol | 17.18 km/l |
| Tata Nexon | 1.2L petrol DCT | Petrol | 17.01 km/l |
| Tata Nexon | 1.2L CNG MT | CNG | 24 km/kg |
| Renault Kiger | 1.0L NA petrol MT | Petrol | 19.83 km/l |
| Renault Kiger | 1.0L NA petrol AMT | Petrol | 19.83 km/l |
| Renault Kiger | 1.0L turbo MT | Petrol | ~20.38 km/l |
| Renault Kiger | 1.0L turbo CVT | Petrol | 17.63 km/l |
In terms of official petrol mileage figures, Kiger is also at the top of the list. Given that Kiger has a lighter body as well as smaller engines compared to Nexon, Kiger’s fuel efficiency under test conditions will naturally be higher than Nexon.
Tata Nexon vs Renault Kiger Real-World Fuel Efficiency
Current owner-reported averages give us one of the cleanest petrol-manual comparisons. The Nexon petrol manual sits around 16.03 km/l, while the Kiger petrol manual averages around 17.53 km/l. That gives the Kiger an advantage of roughly 1.5 km/l in normal use. Interestingly, because the Nexon has a larger 44-litre tank, its theoretical full-tank range is almost identical to the Kiger.
In terms of automatic transmissions, Renault’s Kiger Turbo CVT does offer better fuel economy than the Nexon does. In recent testing of Nexon’s 7-speed DCT automatic in both city conditions (approximately 7.7 km/l) and highway conditions (approximately 13.9 km/l), the average is around 10.8 km/l. The current testing data available for Kiger Turbo CVT indicates city mileage of around 10.41 km/l and highway mileage of around 15.56 km/l, with an average of approximately 13 km/l. Different test publications conducted these tests; therefore, any exact gap in fuel economy should be treated as indicative rather than a direct head-to-head comparison.
| Nexon Petrol MT | Kiger Petrol MT | Nexon DCT | Kiger Turbo CVT | |
| Real-world reference | 16.03 km/l | 17.53 km/l | ~10.8 km/l | ~13.0 km/l |
| Fuel tank | 44L | 40L | 44L | 40L |
| Approx. range | ~705 km | ~701 km | ~475 km | ~520 km |
Overall, Kiger appears to have the edge in fuel economy both as a manual and as an automatic vehicle. While Nexon’s larger fuel tank does help with long-distance range, it does not help with overall cost per kilometre.
Also Read: Tata Nexon Mileage Comparison: Petrol vs CNG vs Diesel vs Electric
Tata Nexon Diesel and CNG Mileage
The Nexon’s advantage is that petrol is only one part of its lineup. Its 1.5-litre diesel has returned around 16.5 km/l in the city and 19.4 km/l on highways, giving a combined real-world reference close to 17.95 km/l. That makes it more efficient than either petrol SUV while also producing a strong 260Nm of torque.
Additionally, Nexon’s CNG model appears to be the most cost-effective option. In testing of the Nexon CNG, the vehicle achieved city mileage of around 15.1 km/kg and highway mileage of approximately 23.7 km/kg, giving it an average reference of approximately 19.4 km/kg. Kiger also offers a CNG retrofit option (on select naturally aspirated manual versions); however, there is currently insufficient mileage data available to provide a numerical comparison of Kiger’s CNG option against Nexon’s factory installation.
This means the Kiger wins if the comparison is strictly petrol versus petrol, while the Nexon becomes more attractive once diesel and factory CNG enter the picture.
Tata Nexon vs Renault Kiger Fuel Cost Comparison
On average, we project that every month we will drive 1,500 km, which equates to 18,000 km a year. The petrol price in New Delhi, as of September 2026, is estimated to be around ₹102.12 per litre. Based on current petrol reference figures, the Kiger will result in lower monthly fuel costs compared to the Nexon reference.
| Nexon Petrol MT | Kiger Petrol MT | |
| Reference Mileage | 16.03 km/l | 17.53 km/l |
| Monthly Fuel Use | 93.6L | 85.6L |
| Monthly Fuel Cost | ₹9,556 | ₹8,738 |
| Annual Fuel Cost | ₹1.15 lakh | ₹1.05 lakh |
| 5-Year Fuel Cost | ₹5.73 lakh | ₹5.24 lakh |
The Kiger will save approximately ₹820 each month, totalling approximately ₹9,800 per year and around ₹49,000 after driving 18,000 km over five years. This is substantial, especially since the Renault is also less expensive upfront.
For the turbo automatics, the available references widen the gap. A Nexon DCT at around 10.8 km/l works out to roughly ₹14,180 per month in petrol, while a Kiger Turbo CVT at around 13 km/l costs about ₹11,800. That is nearly ₹2,400 per month less for the Kiger, although different test methodologies mean the exact difference should be treated cautiously.
Nexon Diesel and CNG Running Cost
The Nexon diesel gives a fuel economy of 17.95 km/l, which, when using diesel priced at ₹95.20/litre and CNG priced at ₹80.09/kg (Delhi), shows that a user of Nexon diesel who travels 1500 km per month will spend approximately ₹7,950/month on fuel. Annually, this would amount to approximately ₹95,500 and a total of approximately ₹4.77 lakh over five years.
The Nexon CNG is cheaper still. At 19.4 km/kg, 1,500km requires roughly 77.3kg of CNG, costing around ₹6,190 per month. Annual fuel cost is about ₹74,300, while five years at the same rate comes to roughly ₹3.72 lakh.
Although the Kiger petrol is more economical to operate than the Nexon petrol, the Nexon CNG is the most economical choice overall. In addition, diesel remains more popular among long-distance users looking for maximum torque without switching to CNG.
Also Read:
Why Is the Renault Kiger More Fuel-Efficient on Petrol?
The Kiger’s advantage comes mainly from lower weight and smaller engines. Its naturally aspirated petrol produces 72PS, while even its stronger turbo version makes 100PS and 160Nm. The Nexon turbo-petrol produces 120hp and 170Nm, giving it more performance but also greater fuel demand when that performance is used.
The Kiger’s turbo manual has demonstrated that even with minuscule turbo engines, fuel efficiency can still be achieved, showing an efficiency of approximately 13.27 km/l for city driving and approximately 18.96 km/l for highway driving during the testing of the manual turbo. The Nexon will be far less fuel-efficient (in the equivalent petrol models) due to the additional weight and increased torque output when operating at similar speeds to the Kiger petrol, particularly in congested city conditions.
The trade-off is performance. The Nexon feels stronger under acceleration and offers more relaxed highway overtaking, while the Kiger’s biggest strength is extracting more kilometres from every litre of petrol.
Also Read: Renault Kiger Mileage Comparison: Petrol vs Turbo Petrol
Tata Nexon vs Renault Kiger Price
The Nexon is available in a range of petrol, diesel and CNG configurations with an overall ex-showroom price of ₹7,40,000 to ₹14,52,000; with this wide range of options, customers will have many different options to choose from – such as a lower initial purchase price, an automatic or a more fuel-efficient diesel engine, and the option of factory-installed CNG based on how they will be using the vehicle.
The Kiger is more affordable, ranging from approximately ₹5.81 lakh to ₹10.40 lakh. Even the top turbo-CVT versions remain below many mid- and upper-spec Nexon variants.
| Model | Variant / Powertrain | Approx. Ex-showroom Price |
| Tata Nexon | Smart Petrol MT | ₹7.40 lakh |
| Tata Nexon | Smart CNG MT | ~₹8.35 lakh |
| Tata Nexon | Petrol AMT variants | ~₹8.8 lakh onward |
| Tata Nexon | Diesel variants | ~₹9 lakh onward |
| Tata Nexon | Petrol DCT variants | ~₹11 lakh onward |
| Tata Nexon | Top CNG | ~₹13.3 lakh |
| Tata Nexon | Top Diesel AMT | ~₹14.5 lakh |
| Renault Kiger | Authentic | ₹5.81 lakh |
| Renault Kiger | Evolution | ₹6.59 lakh |
| Renault Kiger | Evolution+ | ₹7.03 lakh |
| Renault Kiger | Techno | ₹7.60 lakh |
| Renault Kiger | Emotion | ₹8.50 lakh |
| Renault Kiger | Top Turbo CVT | ~₹10.40 lakh |
When viewed only based on the cost of petrol, the Kiger is hard to pass up because it has a much lower cost and better fuel economy than the Nexon does. The Nexon is better than the Kiger in performance, more options for powertrains, and factory-made CNG, which is available in the market.
Summary
The Renault Kiger is the stronger petrol-mileage choice. Its petrol manual averages around 17.53 km/l in current owner-reported data compared with 16.03 km/l for the Nexon, while available automatic testing also favours the Kiger Turbo CVT. Combined with its lower purchase price, that gives the Renault the stronger petrol ownership proposition.
On the other hand, the Nexon has a greater selection of powertrains. Real-world tests showed that the Nexon diesel gets approximately 17.95 km/l and is ideal for those who drive long distances. The factory CNG version has combined mileage of around 19.4 km/kg and provides the lowest fuel costs of any in this comparison. Also, in petrol form, the Nexon’s output exceeds that of other vehicles.
Overall, choose the Renault Kiger if your priorities are petrol mileage, lower purchase price and affordable petrol running costs. Choose the Tata Nexon if you want stronger performance, diesel availability or factory CNG, with the CNG version being the cheapest option to run overall.
Also Read: Tata Nexon vs Kia Sonet: Real World Mileage Comparison
FAQs About Tata Nexon vs Renault Kiger Mileage
Q. Which has better petrol mileage, Tata Nexon or Renault Kiger?
The Renault Kiger has better petrol mileage. Its current petrol-manual real-world reference is around 17.53 km/l compared with approximately 16.03 km/l for the Nexon.
Q. What is the real-world mileage of the Tata Nexon petrol?
Current owner-reported data places the Nexon petrol manual around 16.03 km/l. The DCT has returned lower instrumented figures, with approximately 7.7 km/l city and 13.9 km/l highway in one test.
Q. What is the real-world mileage of the Renault Kiger?
The Kiger petrol manual has a current owner-reported reference around 17.53 km/l. The Turbo CVT has returned roughly 10.41 km/l in the city and 15.56 km/l on highways in testing.
Q. Which is cheaper to run, Nexon petrol or Kiger petrol?
The Kiger petrol is cheaper to run. At 1,500km per month, the Kiger manual costs roughly ₹8,740 in petrol compared with around ₹9,560 for the Nexon petrol manual.
Q. Is the Nexon diesel more economical than the Kiger petrol?
Yes. The Nexon diesel returns around 17.95 km/l and also benefits from a lower diesel price, giving it a lower monthly fuel bill than either petrol SUV.
Q. Which has the lowest running cost overall, Nexon or Kiger?
The Tata Nexon CNG has the lowest running cost among the powertrains compared here. Its current real-world reference is around 19.4 km/kg, making it significantly cheaper to fuel than the petrol versions.
