This is an essential question for Mustang fans. Recently, Ford switched up its lineup, so the naturally aspirated V6 mustang is its entry-level car. Until 2015, the V6 was Mustang's smaller engine for decades after it scrapped its last version of the inline-four. Some fans balked at the Mustang family's latest edition, but many ate their words after driving the 2.3-liter Ecoboost version. Off the floor, the Ecoboost gets more horsepower at 310 compared to the 300 horsepower created by the V6. It also has more torque with 320 lb-ft than the 280 lb-ft the V6 makes, and the Ecoboost has a higher top speed at 148 mph than 124 mph of the larger engine.