The petrol version will be powered by a 1.2-litre Revotron engine that comes incorporated with a multi-point fuel injection system. The company developed this engine by integrating it with an intercooled turbo charging unit that enables it to produce a maximum 83.83Bhp at 5000rpm, while generating a peak torque output of about 140Nm at just 1750 to 3000rpm. This commanding torque output is delivered to the front wheels through an advanced 5-speed manual transmission gearbox. On the other hand, the diesel version comes fitted with a reliable 1.3-litre Quadrajet diesel engine that comes with a total displacement capacity of 1248cc. The company has engineered this motor with 4-cylinders, and 16-valves and incorporated a multi-point fuel injection system. This allows the motor to generate a maximum power output of about 74Bhp at 4000rpm and results in churning out a peak torque output of about 190Nm at 1750 to 3000rpm.
Just like the Maruti Suzuki Swift and Dzire, Tata Zest and Bolt also share the platform and most of the features. Interestingly, the diesel engine in all four these cars is the same Fiat sourced 1.3-litre Multijet. However, Zest gets it in two power options 75PS and 90PS. So, if we compare the performance Zest has an upper hand with its 90PS diesel engine. Zest's 1.2 Revotron petrol is also more powerful and Swift's and as it comes with three different power modes it has a further advantage. Both Zest and Bolt are also more feature rich than Maruti Twins. However, the Swifts get advantage at ride & handling and overall fit and finish. Maruti Suzuki's after sales service and unmatchable resale value also go in Swift twin's favour.