Kushagra
•4hI am planning to buy the Kia Carens 2026. My usage will be 6 days of city driving (100 km total) weekly, 1 day of highway driving (150 km), and an additional 500–800 km trip once every 3 months. However, I am confused about whether to go ahead with it, as the showroom salesperson is suggesting petrol due to DPF concerns. Currently, I own a 2017 Ciaz diesel, which has successfully completed 2.5 lakh km in 9 years.

Autocar India
Your usage is actually very well suited to a diesel engine. You are driving around 250 km a week, including a proper 150 km highway run, along with long 500-800 km trips every few months. This is exactly the kind of usage a BS6 diesel needs. Regular longer drives generate enough heat for the DPF to regenerate naturally, which is the key to avoiding issues.
The concern raised by your showroom mentioned is valid, but only in specific cases. DPF problems typically occurs when the car is used only for short city runs or constant crawling traffic without any sustained driving. In such cases, soot builds up because the filter does not get enough heat to clean itself.
In fact, even owners point out that diesel cars can throw warnings if they don’t get periodic highway runs for regeneration.
Your pattern is the opposite. You are already giving the car exactly what it needs. Daily running plus a weekly highway stretch means the system will take care of itself without you needing to think about it.
Now, coming to petrol vs diesel in the Carens. The diesel is clearly the better engine for your usage. This Kia car is more efficient and far more suited to a loaded 7-seater, especially on highways and ghats. Real-world efficiency is also significantly better, which matters over time. The petrol is smoother for pure city use, but it feels underpowered when fully loaded and will be more expensive to run.

Kia Carens
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Posted on: 22 Apr 2026
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