Question: what is the difference between impala ls lt and ltz?
Answer: The standard engine in the 2015 Impala is a 196 horsepower 2.5-liter 4-cylinder engine. ... The LT/LTZ trims also come with a 305 horsepower 3.6-liter V6 engine, paired with a 6-speed automatic transmission. One of the new options that was put into the Impala in 2015 is the bi-fuel V6 engine.