We do know that Maruti Suzuki is working on CNG variants of the Dzire and Swift. The test mules of both the vehicles have been spotted while they were on a test on the Indian roads. Now, the detailed power output of the engine has been leaked online for both vehicles. The details were shared on Instagram by car.spyshots.
From the leaked specs we can see that both the vehicles would be using a 1.2-litre naturally aspirated petrol engine that produces 81 bhp of max power and 113 Nm of peak torque. While running on CNG, the power output will decrease to 70 bhp and torque output will decrease to 95 Nm.
This is the same engine that was previously offered with both vehicles. Now, this engine has been replaced with a more powerful and more efficient DualJet engine that also has a displacement of 1.2-litre. The new engine produces 89 bhp of max power while the torque output stays the same at 113 Nm.
No other changes will be made to both the vehicles cosmetically. Also, it is highly unlikely that Maruti Suzuki offers an AMT transmission with the CNG variants. So, you would only get a 5-speed manual gearbox. It will also miss out on auto start/stop functionality that helps in saving fuel and is currently offered with the Dzire and Swift.
Swift and Dzire are one of the most fuel-efficient vehicles that you can get in the Indian market. But still, the petrol prices have crossed Rs. 100 mark so people have started considering alternative fuel options. Factory fitted CNGs are a good option as the consumer still can keep its warranty and can benefit from the relatively low prices of CNG.
The Dzire and Swift will get the S-CNG variants just like other Maruti Suzuki vehicles. In S-CNG, the manufacturer has tuned the suspension, chassis and brakes to handle the additional weight of the CNG tank. To ensure the safety of the vehicle, they crash-test the vehicle with a CNG tank installed.
Other modifications made by Maruti Suzuki are Dual Interdependent ECUs which make the transition from petrol to CNG or vice versa smooth. There is a dedicated fuel gauge so you do not have to install an after-market one. All the pipes and the joints are made up of stainless steel. This is done to ensure that there is no leakage and they do not corrode. There is also a safety switch installed that cuts off the engine during the CNG refilling process. The S-CNG variants are available with Ertiga, WagonR, Eeco, Alto, S-Presso and Celerio.
Other CNG vehicles
Hyundai also offers the Grand i10 Nios, Santro and Aura with a factory-fitted CNG option. The Swift CNG will be competing against the Hyundai Grand i10 Nios CNG. The Dzire CNG will go against Hyundai Aura CNG. Tata Motors is also testing their CNG versions of the Tiago and Tigor. So, they would also be launching soon and would compete against Dzire and Swift. According to rumours, Honda is also preparing a CNG variant of the Amaze.