Fuel efficiency is still one of the top criteria when buyers decide which vehicle to buy, especially for those who spend most of their time behind the wheel. And this is where diesel cars still have a commendable advantage. This makes them a suitable pick for daily commuters, regular long-distance travellers and families that travel often, as they are more likely to achieve high efficiency & take fewer fuel stops.
As of 2026, several manufacturers are still selling diesel cars in most segments, from hatchbacks and compact SUVs to larger family SUVs and MPVs. They also achieve the modern-day comfort, practicality and features that buyers demand while enhancing running costs. Ahead in this article, we list the best mileage diesel cars from across India, comparing their fuel efficiency on offer through the diesel variants, along with their overall value as an everyday car, amongst various other parameters.
Table of Contents
List of Best Mileage Cars in Diesel 2026
| Car | Diesel Mileage | Car Type | Ex-Showroom Price Range |
| Kia Sonet Diesel | Up to 24.1 kmpl | Compact SUV | ₹9.8 lakh – ₹15.8 lakh |
| Tata Nexon Diesel | Up to 24.08 kmpl | Compact SUV | ₹10 lakh – ₹15.6 lakh |
| Tata Altroz Diesel | Up to 23.64 kmpl | Premium Hatchback | ₹8.1 lakh – ₹11.1 lakh |
| Tata Curvv Diesel | Up to 22.0 kmpl | SUV-Coupe | ₹11.5 lakh – ₹19.1 lakh |
| Hyundai Creta Diesel | Up to 21.8 kmpl | Mid-Size SUV | ₹13.0 lakh – ₹20.15 lakh |
| Kia Carens Diesel | Up to 21.0 kmpl | MPV (MUV) | ₹12.7 lakh – ₹19.7 lakh |
| Hyundai Venue Diesel | Up to 20.99 kmpl | Compact SUV | ₹10.7 lakh – ₹13.5 lakh |
| Kia Syros Diesel | Up to 20.75 kmpl | Compact SUV | ₹10.1 lakh – ₹15.9 lakh |
| Kia Seltos Diesel | Up to 20.7 kmpl | Mid-Size SUV | ₹12.4 lakh – ₹20.4 lakh |
| Mahindra XUV 3XO Diesel | Up to 21.2 kmpl | Compact SUV | ₹9.2 lakh – ₹13.9 lakh |
Kia Sonet
The Kia Sonet is an entry-level SUV that offers premium looks and practicality for a daily driver. With a tasteful interior that offers plenty of space and modern amenities, this is an overall lovely car to drive and travel in. Be it daily commute, errands or a short weekend getaway, Sonet Diesel suits the needs of almost all buyers – providing just the right amount of power and easy-to-use character.
Kia Sonet Diesel Specifications
- Engine: 1.5-litre CRDi Diesel
- Transmission: 6-Speed Manual / Automatic
- Mileage: Up to 24.1 kmpl
- Airbags: 6
- Fuel Type: Diesel
- Seating Capacity: 5
- Body Type: Compact SUV
Also Read: Diesel Car Maintenance Tips for Best Reliability
Tata Nexon
The Tata Nexon is an all-rounder compact SUV that can cater to many buyers out there. It has a comfortable cabin, predictable driving dynamics and enough versatility for workday commuting or a road trip with family. To this day, its solid build quality and multi-purpose nature have helped keep the SUV at the top of the wish list for many wanting a reliable, no-nonsense everyday vehicle.
Tata Nexon Diesel Specifications
- Engine: 1.5-litre Turbo Diesel
- Transmission: Manual / AMT
- Mileage: Up to 24.08 kmpl
- Airbags: 6
- Fuel Type: Diesel
- Seating Capacity: 5
- Body Type: Compact SUV
Tata Altroz
Tata Altroz is a practical hatchback with ease of driving and comfort. The combination of a well-designed cabin, solid build quality and refined road manners points to its true purpose as an everyday commuter with the occasional highway journey. The Altroz Diesel is still among the simplest and most positive hatchbacks out there for buyers who’d prefer a crossover.
Tata Altroz Diesel Specifications
- Engine: 1.5-litre Turbo Diesel
- Transmission: 5-Speed Manual
- Mileage: Up to 23.64 kmpl
- Airbags: 6
- Fuel Type: Diesel
- Seating Capacity: 5
- Body Type: Premium Hatchback
Also Read: How to Buy a Used Tata Altroz
Tata Curvv
The Tata Curvv is a stylish SUV with an innovative design that breaks from traditional SUV looks. With its modern style, comfortable interior and practical features, make it suitable for everyday driving as well as longer journeys. Curvv Diesel is a potential option for buyers who want something different yet practical enough to use as a family vehicle.
Tata Curvv Diesel Specifications
- Engine: 1.5-litre Turbo Diesel
- Transmission: Manual / DCT
- Mileage: Up to 23 kmpl
- Airbags: 6
- Fuel Type: Diesel
- Seating Capacity: 5
- Body Type: SUV Coupe
Hyundai Creta
The Hyundai Creta is a good all-rounder SUV with comfort and fun driving experience. This roomy interior and modern tech, paired with a flexible, cushy ride, create a fine ally whether for daily driving or long journeys. The Creta Diesel, with its strong reputation and family-friendly build, remains high on the list for SUV buyers as Hyundai has managed to build a stable around it in India.
Hyundai Creta Diesel Specifications
- Engine: 1.5-litre CRDi Diesel
- Transmission: Manual / Automatic
- Mileage: Up to 21.8 kmpl
- Airbags: 6
- Fuel Type: Diesel
- Seating Capacity: 5
- Body Type: Mid-Size SUV
Kia Carens
The Carens is primarily designed to be a family car catering to all the needs of a family, including comfort, space and usage on a day-to-day basis. With plenty of space inside and modular rear seating, the Vehicle is a perfect pick for larger families and road trips. Whether it’s for a daily commuter or going towards weekend road trips, the Carens Diesel gives a great and comfortable experience to all on board.
Kia Carens Diesel Specifications
- Engine: 1.5-litre CRDi Diesel
- Transmission: Manual / Automatic
- Mileage: Up to 21 kmpl
- Airbags: 6
- Fuel Type: Diesel
- Seating Capacity: 6/7
- Body Type: MPV
Hyundai Venue
The Hyundai Venue is an SUV you can live with daily. Its smaller dimensions help it to slip through congested city streets, yet the spacious cabin and up-to-date equipment make longer trips easy work too. Family-friendly, budget-friendly, with a neat and sharp design from an overall point of view, the Venue Diesel is likely to be a great buy for buyers in search of an all-rounder compact SUV.
Hyundai Venue Diesel Specifications
- Engine: 1.5-litre CRDi Diesel
- Transmission: 6-Speed Manual
- Mileage: Up to 20.99 kmpl
- Airbags: 6
- Fuel Type: Diesel
- Seating Capacity: 5
- Body Type: Compact SUV
Kia Syros
Compact yet practical SUV for urban and highway driving It has a roomy cabin, decent passenger and cargo space around everyday usability and pretty good features. The Syros also makes a compelling case for family buyers in the SUV space with its balanced offering of comfort, practicality and modern styling.
Kia Syros Diesel Specifications
- Engine: 1.5-litre CRDi Diesel
- Transmission: Manual / Automatic
- Mileage: Up to 20.75 kmpl
- Airbags: 6
- Fuel Type: Diesel
- Seating Capacity: 5
- Body Type: Compact SUV
Also Read: Kia Syros Buying Guide: Price, Features, Variants
Kia Seltos
The Kia Seltos is a well-priced option for buyers searching for both style and comfort in an everyday SUV. It provides a premium feel, pleasurable driving experience, a comfortable cabin and ample features to make day-to-day commutes, long journeys, or any trip become not only easier but more enjoyable. Its competitive platform and solid premium vibe help keep it a top-seller within the category.
Kia Seltos Diesel Specifications
- Engine: 1.5-litre CRDi Diesel
- Transmission: Manual / Automatic
- Mileage: Up to 20.7 kmpl
- Airbags: 6
- Fuel Type: Diesel
- Seating Capacity: 5
- Body Type: Mid-Size SUV
Mahindra XUV 3XO
The Mahindra XUV 3XO would be an ideal pick for buyers seeking a balance of comfort and efficiency when often driving long distances. It’s confident on highways, and is comfortable enough to get you through the weekend trips. The XUV 3XO Diesel makes a strong case for itself as a capable compact SUV for Indian conditions with its strong styling, spacious cabin and solid overall package.
Mahindra XUV 3XO Diesel Specifications
- Engine: 1.5-litre Turbo Diesel
- Transmission: 6-Speed Manual / AMT
- Mileage: Up to 20.6 kmpl
- Airbags: 6
- Fuel Type: Diesel
- Seating Capacity: 5
- Body Type: Compact SUV
Also Read: Mahindra XUV3XO Mileage Comparison: Turbo Petrol vs TGDi Petrol vs Diesel
Best Mileage Cars in Diesel 2026 Summary
Diesel cars continue to be a smart choice for buyers who cover long distances regularly and want to keep fuel costs under control. While the number of diesel models available in India has reduced over the years, there are still several excellent options across different segments. From efficient hatchbacks to practical family SUVs and spacious MPVs, today’s diesel cars offer a strong mix of mileage, comfort and everyday usability.
The best choice depends on your needs. If fuel efficiency is your top priority, compact diesel cars and SUVs offer excellent value. Buyers looking for more space and comfort can consider larger SUVs and MPVs that still deliver impressive mileage while making long journeys more enjoyable.
Also Read:
Petrol vs Diesel: Efficiency and Cost of Running
Should you Buy a used Hyundai Creta
FAQs About the Best Diesel Cars with the Highest Mileage in India
Q. Which diesel car offers the highest mileage in India in 2026?
The Kia Sonet Diesel is among the most fuel-efficient diesel vehicles currently on sale in India, offering a claimed mileage of up to 24.1 kmpl.
Q. Are diesel cars still worth buying in 2026?
Yes. Diesel cars remain a practical option for buyers who drive long distances frequently and want lower running costs compared to petrol vehicles.
Q. Which is the best diesel SUV for highway driving?
The Hyundai Creta Diesel, Kia Seltos Diesel and Tata Nexon Diesel are among the best diesel SUVs for comfortable and efficient highway travel.
Q. Do diesel cars offer better mileage than petrol cars?
In most cases, yes. Diesel engines generally deliver better fuel efficiency and lower running costs, especially for high-mileage users.
Q. Which diesel family car offers a good balance of mileage and space?
The Kia Carens Diesel is one of the best options for families, offering spacious seating along with impressive fuel efficiency.
Q: What is the mileage of Glanza diesel?
The Toyota Glanza is not offered with a diesel engine; it is available only with a 1.2-litre petrol engine (including an earlier mild-hybrid option). This petrol unit delivers an impressive ARAI-certified mileage of around 22–23 kmpl, making it one of the most fuel-efficient cars in its segment.
