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Engineering

The 2012 Jeep Wrangler delivers unmatched off-road capability with legendary four-wheel drive and is produced with more than seven decades of 4x4 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 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 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 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.

Connectivity

The 2012 Jeep Wrangler stays connected with Uconnect systems, including voice recognition, Bluetooth streaming audio, navigation and SiriusXM Satellite Radio. The Wrangler's connectivity systems have improved ergonomics by giving the driver control at their fingertips. Intuitive buttons on the front and rear of the steering wheel control a number of features allowing the driver to keep hands on the wheel and eyes on the road.

Jeep Wrangler's Legendary Reliability

The 2012 Jeep Wrangler underwent millions of durability testing miles during development in the company's scientific labs, at its proving grounds and on public roads in various climates.

The Wrangler's 3.6-liter V-6 Pentastar engine recorded more than 12 million customer-equivalent miles on engine dynamometers prior to production. Testing was increased by 50 percent compared to previous Chrysler Group V-6 engines, to guarantee a long life against severe conditions and accommodate high-load applications such as trailer towing. Reducing noise, vibration and harshness was a key objective for every engine component and was achieved using advanced computer-aided engineering techniques.

As the Wrangler approached production, the company also tested day and night, on- and off-road to put the equivalent of three years of wear and tear on the vehicle in approximately three months time. This accelerated testing occurred on public roads, paved and unpaved, in an attempt to find and fix any issues before the first SUVs were delivered to customers. The test drivers checked all the functional aspects of the vehicle, such as heating and cooling, window operation, convertible and removable hardtop operation and navigation system.

Manufacturing

The 2012 Jeep Wrangler and Jeep Wrangler Unlimited are built in the Toledo Supplier Park in Toledo, Ohio. The plant features the flexibility to integrate the all-new powertrain with the addition of new engine carriers and transmission lift equipment.

The 3.6-liter V-6 engine is manufactured at the Trenton engine plant in Michigan. The five-speed automatic transmission is produced in Kokomo, Indiana (ITP2), and the manual six-speed transmission is produced in Gaggenau, Germany.

Wrangler Sahara and Rubicon models offer a body-color hardtop and fender flares. A new paint process was developed to match the body color to the sheet molded compound (SMC) hardtops that exceeds the corporate quality standards of paint adhesion and UV resistance in the harshest environments. The body and top are painted separately with blended and matched paint to assure color continuity.

Jeep Wrangler: Photo Gallery, Review (1/2) and Specifications