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Top 12 Mileage Diesel Cars in India in 2026
In recent years, fuel efficiency in vehicles has garnered a lot more attention than before, owing to several factors – the most crucial among them being a sustained rise in fuel prices.
While fuel economy or a car’s mileage may not be the only factor to look into before purchasing a car, it is certainly one of the more important features of a vehicle that plays a role in its performance.
Nevertheless, let us now look at some of the best mileage diesel cars in India!
When buying a car in India, securing car insurance is also crucial as it is mandatory by the Motor Vehicles Act of 1988. It provides financial protection against accidents, theft, and damage, safeguarding your investment.
Having car insurance saves you from hefty traffic fines, license suspension, and even legal trouble.
List of Fuel-Efficient Diesel Cars in India in 2026
Note: All prices here are the ex-showroom price in Delhi.
Top 12 Best Mileage Diesel Cars in India in 2026
1. Hyundai Venue | Mileage: 24.2 kmpl
The Hyundai Venue is currently one of the most fuel-efficient diesel SUVs in India. Its 1.5-litre diesel engine delivers excellent mileage while offering strong performance for both daily commuting and highway drives.
Key Specifications:
- Engine: 1493 cc
- Power: 113.45 bhp @ 4000 rpm
- Torque: 250 Nm @ 1500-2750 rpm
- Transmission: 6-speed Manual & Automatic
- Mileage: 24.2 kmpl
- Seating Capacity: 5
- Body Type: SUV
2. Kia Sonet | Mileage: 24.1 kmpl
The Kia Sonet combines premium features, stylish design, and excellent fuel efficiency. Its diesel engine offers an impressive blend of performance and economy, making it one of the best urban SUVs in the segment.
Key Specifications:
- Engine: 1493 cc
- Power: 116 bhp
- Torque: 250 Nm
- Transmission: Manual, iMT & Automatic
- Mileage: 24.1 kmpl
- Seating Capacity: 5
- Body Type: SUV
3. Tata Altroz | Mileage: 23.64 kmpl
The Tata Altroz is India's only premium hatchback offering a diesel engine. Combined with its 5-star safety credentials and spacious cabin, the Altroz remains one of the most practical diesel cars available.
Key Specifications:
- Engine: 1497 cc
- Power: 88.77 bhp
- Torque: 200 Nm
- Transmission: 5-speed Manual
- Mileage: 23.64 kmpl
- Seating Capacity: 5
- Body Type: Hatchback
4. Hyundai Creta | Mileage: 21.8 kmpl
The Hyundai Creta continues to dominate the midsize SUV segment with its refined diesel engine, premium features, and comfortable ride quality.
Key Specifications:
- Engine: 1493 cc
- Power: 116 PS
- Torque: 250 Nm
- Transmission: 6-speed Manual & Automatic
- Mileage: 21.8 kmpl
- Seating Capacity: 5
- Body Type: SUV
5. Tata Nexon | Mileage: 21.5 kmpl
The Tata Nexon delivers an excellent combination of fuel efficiency, safety, and performance. Its diesel variant remains a popular choice among buyers looking for a compact SUV with low running costs.
Key Specifications:
- Engine: 1497 cc
- Power: 118 bhp
- Torque: 260 Nm
- Transmission: Manual & Automatic
- Mileage: 21.5 kmpl
- Seating Capacity: 5
- Body Type: SUV
6. Kia Seltos | Mileage: 20.7 kmpl
The Kia Seltos combines modern styling, premium technology, and a refined diesel engine. It continues to be a popular option among diesel SUV buyers.
Key Specifications:
- Engine: 1493 cc
- Power: 114.41 bhp
- Torque: 250 Nm
- Transmission: Automatic
- Mileage: 20.7 kmpl
- Seating Capacity: 5
- Body Type: SUV
7. Mahindra XUV 3XO | Mileage: 20.6 kmpl
The Mahindra XUV 3XO offers segment-leading features, a powerful diesel engine, and strong mileage figures. It is one of the most value-packed compact SUVs currently available.
Key Specifications:
- Engine: 1493 cc
- Power: 115 bhp
- Torque: 300 Nm
- Transmission: 6-speed Manual & Automatic
- Mileage: 20.6 kmpl
- Seating Capacity: 5
- Body Type: SUV
8. Hyundai Alcazar | Mileage: 20.4 kmpl
The Hyundai Alcazar is a premium family SUV offering six- and seven-seat layouts. Its diesel engine delivers commendable fuel economy despite its larger size.
Key Specifications:
- Engine: 1493 cc
- Power: 113.45 bhp
- Torque: 250 Nm
- Transmission: 6-speed Manual & Automatic
- Mileage: 20.4 kmpl
- Seating Capacity: 6-7
- Body Type: SUV
9. Mahindra XUV700 | Mileage: 17 kmpl
The XUV700 combines performance, technology, safety, and long-distance touring capability. Despite its size and power, it still offers respectable diesel fuel efficiency.
Key Specifications:
- Engine: 2184 cc
- Power: 182.38 bhp
- Torque: 420-450 Nm
- Transmission: 6-speed Manual & Automatic
- Mileage: 17 kmpl
- Seating Capacity: 5-7
- Body Type: SUV
10. Tata Harrier | Mileage: 16.8 kmpl
The Tata Harrier offers strong road presence, premium interiors, and a powerful diesel engine. It's a suitable choice for buyers looking for a large and comfortable SUV.
Key Specifications:
- Engine: 1956 cc
- Power: 170 PS
- Torque: 350 Nm
- Transmission: Manual & Automatic
- Mileage: 16.8 kmpl
- Seating Capacity: 5
- Body Type: SUV
11. Mahindra Bolero | Mileage: 16.7 kmpl
The Mahindra Bolero remains one of India's most trusted diesel SUVs. Its durability, rugged construction, and low maintenance costs have made it particularly popular in rural and semi-urban markets.
Key Specifications:
- Engine: 1493 cc
- Power: 75 PS
- Torque: 210 Nm
- Transmission: Manual
- Mileage: 16.7 kmpl
- Seating Capacity: 7
- Body Type: SUV
12. Tata Safari | Mileage: 16.3 kmpl
The Tata Safari combines premium features, spacious seating, and excellent safety credentials. It continues to be one of the most desirable three-row diesel SUVs in India.
Key Specifications:
- Engine: 1956 cc
- Power: 170 PS
- Torque: 350 Nm
- Transmission: Automatic & Manual
- Mileage: 16.3 kmpl
- Seating Capacity: 6-7
- Body Type: SUV
FAQs about Best Mileage Diesel Cars in India
Which diesel car has the best mileage in India?
The Hyundai Venue currently offers one of the highest mileage figures among diesel cars in India at 24.2 kmpl.
Which is the best diesel car under ₹15 lakh?
The Hyundai Creta, Tata Nexon, Kia Seltos, and Mahindra XUV 3XO are among the best diesel cars under ₹15 lakh.
Is buying a diesel car a smart choice?
Yes, diesel cars are generally a good choice for buyers who cover long distances regularly due to their better fuel efficiency and lower running costs.
Which diesel car is the most efficient?
The Hyundai Venue is currently the most fuel-efficient diesel vehicle on this list.
Is diesel good for long-distance driving?
Yes. Diesel engines typically offer higher torque and better fuel economy, making them ideal for highway driving and long journeys.
What happens to diesel cars after 15 years in India?
In several regions, particularly Delhi-NCR, diesel vehicles may face registration restrictions after completing 10 years. Local regulations should always be checked before purchasing a diesel vehicle.
Is it more expensive to maintain diesel cars?
Diesel vehicles generally have slightly higher maintenance costs than petrol cars, but the lower fuel expenses often offset the difference for high-mileage users.
Which company makes the best diesel cars in India?
Brands such as Hyundai, Kia, Mahindra, and Tata Motors currently offer some of the best diesel-powered vehicles across different segments.