
When the Chevy Volt concept was first introduced, GM indicated that when the vehicle was running on internal combustion engine (ICE) generator power, after the batteries charge was depleted, it would get 50 mpg.
Recently we found out that GM had decided on a different engine than it planned in the concept. Instead of being a 1-liter 3 cylinder turbo engine, it will be a 1.4 liter 4 cylinder normally aspirated model.
This led some to worry that the car would get less than 50 mpg in the ICE-mode.
In a new conversation I had with Volt chief engineer Andrew Farah, those fears are allayed.
The reason the larger engine was chosen was “a combination of will it do the job? and will it do the job on time,” said Farah implying the very tight time frame to production was the primary reason for this change.
Asked whether the chosen powerplant will change the 50 mpg projection, he said “not significantly”.
This engine is expected to get more than 40 mpg when used in a non-hybrid model, such as the upcoming Chevy Cruze. Therefore it shouldn’t surprise us that when used in the Volt’s series hybrid system with a massive lithium-ion battery and regenerative brakes, that 50 mpg could be achieved.




