Chrysler equips its Jeeps with a wide range of engine choices ranging from a 2-liter, inline four-cylinder for the economical 2011 Patriot to the performance 6.4-liter Hemi SRT8 for the 2012 Grand Cherokee.
Economical Engines
The 2011 Jeep Patriot, Liberty and Wrangler get their own base engines, according to Jeep. The modest Patriot is equipped with a 2-liter, four-cylinder engine with dual overhead cam to generate 158 horsepower. The Liberty features a 3.7-liter V6 that develops 210 horsepower at and 235 foot-pounds of torque. The Wrangler has a 3.8-liter V6 that generates 202 horsepower and 237 foot-pounds of torque. The Patriot achieves 22 mpg in the city and 29 on the highway. The Liberty earns 16/22, and the Wrangler gets 15/19.
Mid-range Engines
The mid-range engine is the 3.6-liter Pentastar V6 that is standard on the Grand Cherokee Laredo, Limited and Overland models. It can develop 290 horsepower and up to 270 foot-pounds of torque. The engine features a lightweight aluminum block, canister-free oil filter and high compression ratio of 10.2:1.
Performance Engines
The 2011 Grand Cherokees get the 5.7-liter Hemi V8 that generates 360 horsepower and 390 foot-pounds of torque. For the 2012 models is a new high-performance 6.4-liter Hemi SRT8 capable of generating 475 horsepower and 460 foot-pounds of torque.
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