Clarification on Mahindra Thar Roxx Fuel Efficiency & Recommendation Between Manual vs Automatic
Dear Autocar India Team,
This email is in reference to the insights you shared regarding the expected r

Question

Clarification on Mahindra Thar Roxx Fuel Efficiency & Recommendation Between Manual vs Automatic
Dear Autocar India Team,
This email is in reference to the insights you shared regarding the expected real‑world fuel efficiency of the Mahindra Thar Roxx. Thank you for the detailed analysis based on your experience with the three‑door Thar.
However, many YouTube reviews and user-reported tests indicate a fuel efficiency of around 11 km/l for both the manual and automatic variants under mixed driving conditions. This has created some confusion for me as a prospective buyer.
I request your clarification on the following points:
Why is there a noticeable difference in fuel efficiency between the automatic and manual transmissions, especially when some real‑world tests appear to show similar figures?
Between the manual and automatic variants, which would you recommend in terms of:
Maintenance cost
Long-term reliability and robustness
Overall ownership convenience
Considering that I reside in Delhi, where diesel regulations and long-term compliance remain uncertain, which powertrain and transmission combination would be the most practical choice?
Your expert guidance will be extremely helpful in making an informed decision.
Thank you for your time and support.

Autocar India team · Accepted Answer

Our detailed real-world fuel efficiency test of the three-door Mahindra Thar was conducted in Mumbai, a city known for heavy stop-start traffic. Compared to this, driving conditions in Delhi NCR generally involve more flowing traffic, which can result in slightly better efficiency figures. You can expect the Mahindra Thar Mileage to be around 9 to 11 kpl in the city and 13 to 15 kpl on the highway.

As an additional reference point, we can look at the Mahindra Scorpio N, which uses the same engines as the Thar Roxx, albeit in a higher state of tune. In our real-world tests, the petrol automatic Scorpio N returned 7.9 kpl in the city and 9.4 kpl on the highway. The diesel automatic managed 8.6 kpl in the city and 11.7 kpl on the highway.

As these figures show, the difference in fuel efficiency between petrol and diesel automatics is not significant enough to justify choosing the diesel variant, especially given your limited running and predominantly city-based usage.

As for manual versus automatic efficiency, especially in the case of the Thar Roxx, it is highly unlikely that the torque converter automatic will match the efficiency of the manual. This is due to the basic nature of the transmission. Torque converters use a fluid coupling instead of a direct mechanical link, which leads to energy losses during acceleration and low-speed driving. In contrast, a manual gearbox offers a direct mechanical connection once the clutch is engaged, resulting in lower losses.

Other automatic transmissions, such as dual clutch units and CVTs, are inherently more efficient than torque converters. DCTs use mechanical clutches for faster and more direct power transfer. CVTs are able to keep the engine operating in its most efficient rev range for most driving conditions. As a result, these transmissions can deliver fuel efficiency figures closer to manuals, something that is unlikely with a torque converter automatic.

Finally, considering you are based in Delhi, where diesel regulations remain uncertain, the petrol variant of the Thar Roxx would be the more sensible and stress-free choice. The Thar Roxx price starts at 12.52 lakh (ex-showroom, Delhi).

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