A Chrysler 3.5-liter engine is a bit lower on the scale than the Pentastar 3.6-liter engine that the company replaced it with; the 3.5 added acceleration that the 2.7-liter engine lacks but falls short when compared to the next generation engine. The 3.5-liter engine gets 17 mpg in the city and 25 mpg on the highway.
The new Pentastar engine is 42 pounds lighter than the 3.5-liter engine, produces 33 percent more horsepower and clocks in with improved fuel economy over its predecessor. The 3.5-liter-engine produced 250 pounds-feet of torque and 250 horsepower. By comparison, the 3.6-liter engine tops off at 268 pounds-feet of torque and 305 horsepower.
The 3.5-liter engine also falls behind the Pentastar 3.6-liter engine in terms of mileage; the new engine gets 18 mpg in the city and 27 mpg on the highway. The combined rate given by the EPA is 21 mpg, which independent tests have proven to be a 4 mpg leap in performance, as reported by Hendon Media Group.
The new V-6 engine was first introduced in the Jeep Grand Cherokee in 2011 and then started replacing the 3.5-liter engine in 13 of Chrysler's other automotive lines in 2012.