If I purchase a car now and plan to keep it for the next 10–12 years, will it support higher ethanol-blended petrol like E27 or E30 in the future? If I use an E20-compliant car with E27 or E30 petrol, what could be the possible adverse effects on mileage and maintenance costs? If technical modifications are required to use E30 petrol, will Tata Motors provide the necessary support (even as a paid service)?

Autocar India

•5h

There is no need to panic or cancel your booking because of the E85 announcement. The recently launched E85 fuel is meant only for flex-fuel vehicles specifically designed to run on up to 85 percent ethanol. The Tata Punch iCNG is not a flex-fuel vehicle, so it will continue to run on regular petrol, CNG and the currently mandated ethanol blends as specified by Tata. E85 is not something that will suddenly replace regular fuel at all pumps.In fact, even today, most new petrol cars sold in India, including the Punch, are engineered to handle the current E20 petrol that is available in the market. The move to E85 is a separate initiative and requires specially developed flex-fuel vehicles.The bigger picture is that you have chosen a Punch iCNG, which is already relatively future-proof from a fuel-cost perspective. CNG will remain widely available, and your running costs will be significantly lower than those of a comparable petrol vehicle.

Tata Punch

Autocar India

•2d

Get it checked soon, because visible smoke under the bonnet is not normal, even if it went away. In bumper-to-bumper traffic, riding the clutch can overheat it, which gives a strong acrid burning smell and can even cause brief white smoke from the gearbox housing area. The smell often lingers, so your half-clutch use fits the story. But have the workshop inspect the car and the clutch for overheating, also rule out a fluid drip onto a hot part, a bit of plastic stuck on the exhaust, or any wiring insulation getting cooked. Quickly check coolant and engine oil levels at home; if you see smoke again or any warning light, park up and call Tata RSA instead of driving.

Tata Punch

Autocar India

•3d

It isn’t periodical - your Kia Carens triggers DPF regeneration when the ECU senses the filter is filling with soot. It uses sensors and driving data to estimate soot load, then does passive regen on its own during steady highway runs, and active regen when needed by raising exhaust temperature to burn the soot.If your use is mostly short, stop‑start city trips, the car can’t keep exhaust temps up, so active regens will happen more often, and sometimes you’ll see a DPF message asking you to keep driving. When that pops up, a 15‑20 minute run at about 60 km/h with gentle revs usually completes it. If you ignore or keep shutting the car mid‑cycle, the warning can escalate, and you may need the parked/manual regen from the cluster menu, or a workshop reset.You’ll notice slightly higher fuel use, a hot smell, and a fast fan while regen runs. That’s normal. It is not tied to a fixed mileage or time; it’s entirely based on soot loading and your driving pattern.

Kia Carens