The new 2012 Jeep Wrangler comes with an all-new, more fuel efficient and more powerful 3.6-liter V-6 engine, and a new five-speed automatic transmission – both of which it shares with the award-winning Jeep Grand Cherokee.
The all-new 3.6-liter Pentastar V-6 and five-speed automatic transmission dramatically enhance Wrangler’s on-road driving performance – delivering up to 21 miles per gallon, 40 percent more power and 10 percent more torque – while also taking the vehicle’s legendary off-road capability to a new level.
Chrysler Group’s 3.6-liter Pentastar V-6 engine – winner of the prestigious Ward’s 10 Best Engines award – delivers 285 horsepower (209 kW) and 260 lb.-ft. of torque (353 N•m), with greater fuel efficiency. The improvement, when compared to the previous 3.8-liter V-6 engine, is 40 percent in horsepower and 10 percent in torque. Additionally, for refined shifting and greater performance, the Jeep Wrangler migrates from a four-speed to a new five-speed automatic transmission. The 2012 Jeep Wrangler also features the company’s first application of a manual transmission to the Pentastar V-6.
The Jeep Wrangler and Wrangler Unlimited will continue to be available in four models: Sport, Sport S, Sahara and Rubicon. Combined with an all-new interior for 2011, the 2012 Jeep Wrangler is virtually all-new over the past two model years and will excite core Jeep followers while appealing to new customers.
The 2012 Jeep Wrangler delivers unmatched off-road capability with legendary four-wheel drive and is produced with more than seven decades of 4×4 engineering experience. Wrangler continues to offer a body-on-frame design, front and rear five-link suspension system, live axles, electronic lockers, and is one of the few mid-size SUVs that offers a six-speed manual transmission – in addition to its new five-speed automatic transmission.
The new automatic transmission benefits the 2012 Jeep Wrangler as much as the new engine with more refined shifting and gear selection. By increasing the number of speeds from four to five, the transmission allows the engine to operate in a more efficient RPM range, which helps increase fuel economy. More speeds also enable the engine to remain in the torque curve, increasing acceleration. The 2012 Jeep Wrangler boasts a 25-percent improvement in 0–60 mph time, which is now 8.4 seconds. Also, a lower first-gear ratio in the new automatic transmission gives the Wrangler more off-road capability via a lower overall crawl ratio.
Jeep Wrangler is now available with more axle gear ratios allowing customers to optimize fuel economy and/or vehicle capability. Wrangler is available with 3.21, 3.73 or 4.10 ratios depending on model. Also, Wrangler offers towing capability up to 3,500 lbs.
A best-in-class approach angle of 44.6 degrees, breakover angle of 25.5 degrees and best-in-class departure angle of 40.6 degrees, helps the Jeep Wrangler scale the toughest terrain.
The capable driveline of the Jeep Wrangler Sport and Sahara models include a Dana 30 front axle and Dana 44 rear axle. The Command-Trac® NV241, part-time, two-speed transfer case, features a 2.72:1 low-range gear ratio. In addition, an optional Trac-Lok® limited-slip rear differential provides extra torque and grip in low-traction environments such as sand, mud or snow.
The Jeep Wrangler Rubicon model features heavy-duty Dana 44 front and rear axles and the Rock-Trac® NV241 two-speed transfer case with a 4.0:1 low-range gear ratio. Rubicon also includes electric front and rear locking differentials, disconnecting front sway bar and 32-inch tires, taking the Wrangler to the highest level of capability.
The 2012 Jeep Wrangler and Wrangler Unlimited are available with an array of safety and security technology features. Standard electronic stability control, electronic roll mitigation, Trailer-sway Control, Hill-start Assist and brake traction control are among two dozen available safety and security features.