Nazish
•1dI want to buy an automatic car. My daily running is around 100 km, with 90% highway use and 10% city driving. I am confused between the Tata Punch CNG AMT and the Kia Sonet Diesel AT. Kindly suggest which one would be the better choice for my usage.

Autocar India
Given you drive 100 km a day and mostly on the highway, the Kia Sonet diesel automatic fits your use case better. The torquier diesel engine means it pulls effortlessly, so overtakes are easy and it cruises calmly for long stretches. The Sonet is also a proper, smooth torque converter automatic compared to the Punch's AMT, so it'll be more seamless to drive with fewer jerks and less effort in slow traffic. On long runs, the diesel’s bigger tank gives a longer range, so you stop less for fuel.
The Tata Punch CNG with automatic suits city-heavy use and those who want the lowest fuel cost, but on the highway, it feels slower, and you need to plan every pass. CNG pumps on many highways are still fewer than diesel, the filling takes longer, and you have to contend with the queues usually seen at CNG pumps.
Trade-offs with the Sonet: it costs more upfront, and the diesel is a bit louder than a petrol or CNG. Even so, for your high daily highway run, the Sonet diesel automatic lines up best.
Kia Sonet
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Posted on: 17 May 2026
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