Top Five diesel-automatic midsize SUVs under Rs 25 lakh ranked

Top Five diesel-automatic midsize SUVs under Rs 25 lakh ranked
Best diesel automatic SUVs under Rs 25 lakh

SUVs are best had with diesel engines, but given our policies and the disapprobation surrounding this fuel, most carmakers have entirely withdrawn themselves from offering diesel engines. What’s interesting is that where diesel is still on offer, it continues to make up a sizeable portion of that segment, meaning that demand is still healthy but customers only have a handful of options to choose from. So, if you are in the market looking for a diesel-automatic SUV, here we have compiled a list of the five best diesel-AT midsize SUVs available within a budget of Rs 25 lakh. 

Mahindra XUV 7XO 

Price: Rs 15.29 lakh – Rs 25.79 lakh 

Mahindra is almost synonymous with large diesel SUVs and the XUV 7X0’s 185hp, 2.2-litre diesel is a benchmark for refinement and performance. It’s the most powerful SUV here, and the 6-speed torque converter automatic gearbox that’s offered with this engine is smooth, too. A premium and spacious interior with generous levels of equipment and a sorted ride and handling balance are some of XUV 7XO’s other strengths. The third-row isn’t particularly spacious, but it at least offers the flexibility of one.  

Kia Seltos 

Price: Rs 15.32 lakh – Rs 21.82 lakh 

Although much lesser in capacity and power output than the XUV 7X0, the Seltos’s 116hp, 1.5-litre diesel also stands out for smoothness and refinement. With linear power delivery and max torque coming in at just 1500rpm, it makes for a comfortable cruiser. However, it lacks that outright diesel punch and urgency, even in Sport mode. The gearbox, while smooth, is also a slow shifter, even via the paddles. The Seltos, too, is a very spacious and premium on the inside, and arguably has the best UI/UX for the infotainment system. 

Hyundai Creta 

Price: Rs 16.08 lakh – Rs 20.11 lakh 

The Creta uses the same 116hp, 1.5-litre diesel engine as the Seltos, so the smooth and refined character of the engine applies here as well. However, being an older generation model and slightly smaller than the new Seltos, it doesn’t feel lack lustre in terms of performance. It’s also quite efficient, making the diesel-auto one of the best powertrain choices on the Creta. Otherwise, too, the Creta remains one of the most competent offerings in the segment faring well on space, features and premium-ness despite its relative age compared to its rivals. 

Tata Sierra 

Price: Rs 15.99 lakh – Rs 21.29 lakh 

The Sierra uses the same 1.5-litre diesel engine that’s offered on the Curvv and the Nexon, but it has been up-tuned to produce 118hp and 280Nm. This 1.5 unit doesn’t have the midrange punch associated with diesels; instead, it builds power linearly. It also isn’t particularly refined as you can feel vibrations at all times, which makes it known to you that you are, in fact, driving a diesel. The torque-converter auto, however, is a smooth unit that keeps the engine in the meat of the powerband. Elsewhere, the Sierra impresses with its space, features and well-judged ride and handling balance. 

Mahindra Scorpio N 

Price: Rs 14.19 lakh – Rs 25.49 lakh

 

The Scorpio N uses the same 2.2-litre diesel engine as the XUV 7XO, but in a slightly different state of tune, producing 175hp and 370Nm (400Nm in 4×4 guise) here. Given the Scorpio N’s hardy underpinnings and rugged nature, the diesel engine makes for a great fit on this SUV, thanks to its strong reserves of torque. The 6-speed AT gearbox isn’t particularly quick shifting or sporty, but it is smooth. The Scorpio N is also the only SUV on this list to come with an optional 4×4 system, and you’d be surprised by how capable it is off the tarmac. It also has a premium interior and is well-specced with features, but third-row is quite limited on space. 

Tata Sierra vs Kia Seltos diesel AT performance comparison

Tata Sierra vs Kia Seltos diesel AT performance comparison

The Tata Sierra and Kia Seltos are among the few mid-size SUVs available with a diesel engine option. We have already compared their fuel efficiency figures, but this time we are looking at how the two perform in terms of acceleration. It should be noted that the Seltos diesel AT was tested in slightly wet conditions at a temperature of 27deg C. Here is how the two SUVs compare.

Tata Sierra vs Kia Seltos diesel AT: Specifications

SUVSierraSeltos
Cylinder count44
Displacement1497cc1493cc
Power118hp at 4000rpm 116hp at 4000rpm
Torque280Nm at 1500-2750rpm250Nm at 1500-2750rpm
Automatic transmission6-speed torque converter6-speed torque converter
Tyre size19 inch18 inch

The Tata Sierra and Kia Seltos use four-cylinder diesel engines with nearly the same displacement, at 1,497cc and 1,493cc, respectively. The Sierra makes 118hp, which is 2hp more than the Seltos’ 116hp. Its bigger advantage is torque, with 280Nm compared with 250Nm for the Seltos. Notably, the Sierra AT diesel makes 20Nm more torque than the manual version.

Both SUVs get a six-speed torque-converter automatic gearbox and are also equipped with a variable-geometry turbocharger, which helps improve power delivery and reduce turbo lag. In terms of wheel size, the Sierra gets 19-inch tyres, while the Seltos is equipped with 18-inch units.

Tata Sierra vs Kia Seltos diesel AT: 0-100kph sprint

SUVSierraSeltos
20kph (s)1.441.36
40kph (s)3.533.11
60kph (s)5.935.81
80kph (s)9.319
100kph (s)13.3713.17

In our tests, the Kia Seltos is quicker than the Tata Sierra in accelerating from a standstill to the 100kph mark. From 0-20kph, the Seltos takes 1.36 seconds, 0.08 seconds quicker than the Sierra’s 1.44 seconds figure. The gap increases to 0.42 seconds at 40kph, with the Seltos taking 3.11 seconds versus 3.53 seconds for the Sierra.

Tata Sierra vs Kia Seltos diesel AT 0-100kph sprint

At 60kph, the Seltos takes 5.81 seconds, just 0.12 seconds quicker than the Sierra’s 5.93 seconds. The difference is even smaller at 80kph, where the Seltos takes 9 seconds compared with 9.31 seconds for the Tata SUV. At 100kph, the Kia SUV completes the run in 13.17 seconds, while the Sierra takes 13.37 seconds, making it 0.20 seconds quicker.

Tata Sierra vs Kia Seltos diesel AT: Rolling acceleration

In the 20-80kph run, with the cars in third gear and using kickdown, the Seltos is quicker than the Sierra. It takes 7.72 seconds to complete the run, compared with 7.97 seconds for the Sierra, giving it a 0.25 second advantage.

The result reverses in the 40-100kph fourth-gear kickdown test. Here, the Sierra takes 9.42 seconds, making it 0.62 seconds quicker than the Seltos, which completes the run in 10.04 seconds.

Tata Sierra vs Kia Seltos diesel AT: Prices

SUVSierraSeltos
Price range (Rs lakh)15.99-21.2915.32-21.82

The Kia Seltos has a lower starting price at Rs 15.32 lakh, compared with Rs 15.99 lakh for the Tata Sierra, making it Rs 67,000 cheaper at the base end. However, the Sierra has a lower top-spec price of Rs 21.29 lakh, while the Seltos goes up to Rs 21.82 lakh, making the Sierra Rs 53,000 cheaper at the top end.

Autocar India’s performance testing standards

Before we conduct our performance tests, we check and maintain tyre pressures based on the manufacturer’s recommendations and ensure the car has a full tank of fuel. The car is then tested in a controlled environment with two people on board, and the data is collected via highly accurate GPS-based timing equipment.

Ex-showroom prices are as of August 11, 2026.

Kia Seltos vs Tata Sierra diesel automatic: Real world mileage compared

Kia Seltos vs Tata Sierra diesel automatic real world mileage comparison

Alongside the Hyundai Creta, the only SUVs in this segment offering a diesel engine mated to a torque-converter automatic transmission (AT) are the Kia Seltos and the Tata Sierra. Where the all-new Sierra was introduced in November 2025, the second-gen Seltos entered the fray in January 2026. The Sierra diesel-AT version is limited to five trim options, but its Seltos counterpart is available in eleven. So, which one of these 5-seater midsize SUVs offers higher fuel economy?

Explore full specs, features and a price breakdown in our Seltos vs Sierra comparison.

Kia Seltos vs Tata Sierra diesel automatic: Specifications

The Sierra offers more power, but it is also heavier than the Seltos

Kia Seltos vs Tata Sierra diesel automatic: Specifications

 

Kia Seltos

Tata Sierra

Engine

4 cyl, diesel

4 cyl, diesel

Displacement (cc)

1493

1497

Power (hp)

116 (4,000rpm)

118 (4,000rpm)

Torque (Nm)

250 (1,500-2,750rpm)

280 (1,500-2,750rpm)

Gearbox

6-speed AT

6-speed AT

Fuel tank (litres)

47

50

Even though their turbocharged engines are of similar sizes, it’s the Tata Sierra’s unit that produces 2hp and 30Nm more. Moreover, the power and torque figures of these cars are achieved over the same engine RPM range. Compared to the Seltos, the Sierra diesel comes with a slightly larger fuel tank (by 3 litres), whilst the gearboxes on both are 6-speed torque-converter automatic units. Both cars are equipped with a variable-geometry turbocharger, thus improving power delivery and reducing turbo lag.

Kia Seltos vs Tata Sierra diesel automatic: Real-world fuel efficiency

Despite featuring an ‘Eco’ mode and weighing less, the Seltos fared slightly worse than the Sierra

Kia Seltos vs Tata Sierra diesel automatic real world mileage comparison chart

During our real-world fuel economy test, the Seltos diesel managed an average that was 0.5kpl worse than the Sierra. It was also 0.73kpl thirstier in the city, whilst consuming 0.26kpl more fuel than its Tata rival out on the highway. Despite being heavier than a comparable diesel-automatic trim of the Seltos, the relatively lower engine RPM of the Sierra when cruising at 100kph helps its efficiency. For reference, the Seltos’ diesel engine was spinning much faster at 100kph, at 2,100 RPM. Neither SUV gets an automatic engine stop-start system to reduce fuel burn further, but the Seltos does come with an Eco drive mode.

Kia Seltos vs Tata Sierra diesel automatic: Prices

Kia Seltos vs Tata Sierra diesel automatic prices

 

Kia Seltos

Tata Sierra

Price range (in Rs, lakh)

15.32-21.82

15.99-21.29

The most affordable trim of the Kia Seltos diesel with the torque-converter automatic gearbox costs Rs 67,000 less than its equivalent Tata Sierra. At the top-end of the spectrum, the latter has a price advantage of Rs 53,000.

Autocar India’s fuel efficiency testing

Before our real-world fuel efficiency tests, we fill our test cars’ tanks to the brim and maintain tyre pressures based on the manufacturer’s recommendations. These cars are driven in fixed city and highway loops in and around Navi Mumbai, and we maintain certain average speeds. Throughout the tests, there is only one person in each car, running the air conditioner and other electricals, such as the audio system, indicators and wipers, when required, just like a regular user would. Periodic driver swaps further neutralise variations in driver patterns. At the end of each cycle, we calculate efficiency by filling the tanks to full again.

Prices are ex-showroom, India.

Also read

Nissan Gravite CNG real world fuel economy tested, explained

Maruti Brezza vs Tata Nexon real world CNG mileage comparison

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