The 2017 Chevy Impala has two engines to choose from: a 2.5-liter four-cylinder engine, and a 3.6-liter V6. The beauty of this is that depending on which engine you pick, you’ll end up experiencing a different kind of ride. Regardless of which engine, model, or trim you choose, however, the Impala is equipped with a six-speed automatic transmission and front-wheel drive across the board.
This 2.5-liter four-cylinder is the standard engine of choice for the Impala, producing 196 horsepower and 186 lb.-ft. of torque. While that might not seem like much for a large sedan, it’s enough. After all, the goal is to strike a balance between performance and fuel economy. Which is does quite well, with EPA estimates coming in at 22 mpg city/31 mpg highway. Will it be the most exciting ride on the highway? No, but you will experience a smooth ride, courtesy of the automatic transmission, as well as a comfortable ride, thanks to the high-quality construction of the vehicle and cabin. Most importantly, you'll enjoy the savings afforded by a smaller car's fuel-efficiency, but on a large sedan.
If it’s thrill seeking you’re after, go for the 3.6-liter V6 engine.
When equipped with the 3.6-liter V6 (available on the LS and LT trim), the Impala turns into a completely different animal. Now, drivers will experience what 305 horsepower and 264 lb.-ft. of torque can do for a large sedan. The fuel-efficiency does dip down slightly, but only to 18 mpg city/28 mpg highway. While that’s a noticeable difference, it’s still not that bad. Furthermore, the Impala is able to do a 0-60 mph sprint in 6.4-seconds, quite quick for a larger sedan.
Therefore, an Impala equipped with the 3.6-liter V6 engine will provide you with a much more athletic and adrenaline-pumping performance. But, it’s still toned back enough for the rest of the family.
On a side note, Chevrolet is also selling a dual-fuel Impala with a V6 that can run on either compressed natural gas (CNG) or regular gasoline.