Jeep has introduced its new hybrid 375bhp Wrangler 4xe, marking the arrival of the most capable, technically advanced and eco-friendly Wrangler ever.

The Wrangler 4xe’s plug-in hybrid powertrain is capable of up to 25 miles of nearly silent, zero-emission, electric-only propulsion, making it commuter friendly as an all-electric daily driver without range anxiety and the most capable and eco-friendly Jeep vehicle off-road – combined with the open-air freedom that only Jeep Wrangler offers.

The Wrangler 4xe’s advanced powertrain provides a unique on- and off-road experience through the combination of two electric motors, a high-voltage battery pack, a high-tech 2.0-litre turbocharged I-4 engine and robust TorqueFlite eight-speed automatic transmission. The most advanced powertrain ever developed for a Jeep Wrangler maximises efficiency with an estimated 50mpg equivalent (MPGe) delivering pure-electric operation for most daily commutes.

Wrangler 4xe Advanced Powertrain Combines Electric Motors, Turbo Engine
The Jeep Wrangler 4xe powertrain integrates two electric motors and a 400-volt battery pack with a fuel-efficient, turbocharged, four-cylinder engine and TorqueFlite eight-speed automatic transmission. This configuration maximises the efficiency of the hybrid propulsion components and mates them with the Wrangler’s world-renowned and proven driveline.

The 2.0-litre turbocharged I-4 engine is part of FCA’s Global Medium Engine family. The high-tech, direct-injection engine uses a twin-scroll, low-inertia turbocharger mounted directly to the cylinder head, along with a dedicated cooling circuit for the turbocharger, intake air and throttle body for exceptional responsiveness, performance and fuel efficiency.

A high-voltage, liquid-cooled motor generator unit mounts at the front of the engine, replacing the conventional alternator. A robust belt connects the motor generator to the engine crankshaft pulley. The motor generator spins the engine for nearly seamless, fuel-saving, start-stop operation and generates electricity for the battery pack. The Wrangler 4xe does not use a conventional 12-volt starter motor. The Wrangler 4xe is equipped with a 12-volt battery to run accessories.

The second high-voltage motor generator is mounted at the front of the transmission case, replacing the conventional torque converter of an automatic transmission.

Battery Pack Preserves Interior Room
The Jeep Wrangler 4xe’s 400-volt, 17-kWh, 96-cell lithium-ion battery pack uses nickel manganese cobalt (NMC) graphite chemistry. The pack and controls mount underneath the second-row seat, where it is protected from outside elements. The Wrangler 4xe’s second-row seat is redesigned, allowing the bottom cushion to flip forward for access to the battery.

Encased in an aluminium housing, the pack is fitted with a dedicated heating and cooling circuit to keep the battery at its optimum temperature for best performance. The temperature control circuit includes a dedicated heater unit and a chiller that uses the Wrangler air-conditioning refrigerant to reduce coolant temperature when needed.

The Wrangler 4xe hybrid system includes an Integrated Dual Charging Module (ICDM), which combines a battery charger and a DC/DC converter in a single unit that is more compact than two separate components, and a next-generation Power Inverter Module (PIM) that is reduced in size. These components are housed and protected from damage in a steel structure mounted below the battery pack.

All high-voltage electronics, including the wiring between the battery pack and the electric motors, are sealed and waterproof. Like all Trail Rated Jeep Wranglers, the Wrangler 4xe is capable of water fording up to 30” (762mm).

The electric charge port features a push-open/push-close cover and is located on the left front cowl of the Wrangler 4xe for convenient nose-in parking at charging locations. The charge port includes LED indicators of charging status. An LED battery level monitor is mounted on top of the instrument panel, making it easy to check battery state of charge at a glance during charging.

Wrangler 4xe E Selec Modes
The Jeep Wrangler 4xe driver can tailor the hybrid powertrain to best suit each trip, whether it is filling the needs of most daily commuters in pure-electric operation, a night on the town or quietly exploring nature off-road.

The Wrangler 4xe hybrid powertrain has three modes of operation, known as E Selec. The driver can select the desired powertrain mode via buttons mounted on the instrument panel, to the left of the steering wheel. Regardless of the mode selected, the Wrangler 4xe operates as hybrid once the battery nears its minimum state of charge.

• Hybrid: The default mode blends torque from the 2.0-litre engine and electric motor. In this mode, the powertrain will use battery power first, then add in propulsion from the 2.0-litre turbocharged I-4 when the battery reaches minimum state of charge

• Electric: The powertrain operates on sero-emission electric power only until the battery reaches the minimum charge or the driver requests more torque (such as wide-open throttle), which engages the 2.0-litre engine

• eSave: Prioritises propulsion from the 2.0-litre engine, saving the battery charge for later use, such as EV off-roading or urban areas where internal combustion propulsion is restricted. The driver can also choose between Battery Save and Battery Charge during eSave via the Hybrid Electric Pages in the Uconnect monitor

To help optimise the benefit of the E Selec modes, the Wrangler 4xe driver information display and the Uconnect touchscreen feature Eco Coaching Pages. The Eco Coaching Pages let owners monitor power flow and see the impact of regenerative braking, schedule charging times to take advantage of lower electric rates, and view their driving history with a detail of electric and gasoline usage.

Regenerative braking is a key part of the Wrangler 4xe eco-friendly equation. When the driver steps on the brake pedal, the powertrain control engages the maximum available regenerative braking, up to 0.25 g, from the electric motors to slow the vehicle, augmented with the Wrangler’s traditional friction brakes. The regenerative braking feature also extends the replacement period for brake pads.

With 4x4 engaged, all four wheels feed torque for regenerative braking, maximising the energy recovery. Electricity due to regenerative braking is fed to the battery pack to maintain or increase the state of charge.

The Wrangler 4xe also features the ability to maximise regenerative energy production via a driver-selectable Max Regen feature.

When Max Regen is engaged, a more assertive regenerative braking calibration occurs when the vehicle sees zero throttle input from the driver (coasting). Max Regen can slow the Wrangler 4xe faster than standard regenerative braking and generate more electricity for the battery pack. Once selected, the Max Regen feature remains engaged until driver deselects it.

Off-road Legend
The Wrangler’s heritage is defined by its legendary off-road capability. All Wrangler 4xe power modes are available when the drivetrain is shifted to 4Lo. The seamless integration of electric power into the 4x4 drivetrain elevates the Wrangler 4xe to new levels of off-road performance.

Enthusiasts will find that the instant availability of torque from the Wrangler 4xe’s electric motor delivers a more precise and controlled driving experience for climbing and crawling – there’s no need to build up engine rpm to get the tyres to move, minimising driveline shock loading and maximising control and speed.

In EV mode, the Wrangler 4xe treads lightly and silently, conserving fuel and allowing occupants to focus solely on the sights and full sounds of nature.

The new Jeep Wrangler 4xe is available in three models: 4xe, Sahara 4xe and Rubicon 4xe. Wrangler 4xe and Wrangler Sahara 4xe models are equipped with full-time 4x4 systems, front and rear next-generation Dana 44 axles and are fitted with the Selec-Trac two-speed transfer case with a 2.72:1 low-range gear ratio. The intuitive system allows the driver to set it and forget it in any environment.

An available Trac-Lok limited-slip rear differential provides extra grip and capability in low-traction situations, such as driving over sand, gravel, snow or ice.

Wrangler Rubicon 4xe models carry the Rock-Trac 4x4 system that includes a two-speed transfer case with a 4:1 low-range gear ratio, full-time 4x4, front and rear next-generation Dana 44 axles, Tru-Lok electric front- and rear-axle lockers. The Wrangler Rubicon 4xe has an impressive crawl ratio of 77.2:1, which makes scaling any obstacle easy. Wrangler Rubicon models also offer improved articulation and total suspension travel with help from a front axle, electronic sway-bar disconnect. Together, these components contribute to the maximum off-road prowess Wrangler Rubicon is known for.

The Wrangler 4xe includes Selec-Speed Control with Hill-ascent and Hill-descent Control. This allows drivers to control vehicle speed up and down steep, rugged grades with the transmission shift lever.

Like every Jeep Wrangler, the Jeep Wrangler 4xe models wear a Trail Rated badge that signifies legendary 4x4 capability with equipment that includes:

• Skid plates and front and rear tow hooks

• Wrangler Rubicon 4xe approach angle of 44 degrees, breakover angle of 22.5 degrees, departure angle of 35.6 degrees and ground clearance of 10.8 inches (27.4 cm)

• Aggressive, available, 17-inch, off-road wheels and 33-inch tyres standard on Rubicon 4xe; 20-inch wheels standard on Wrangler 4xe and Sahara 4xe

• Up to 30 inches (76 cm) of water fording

All 4xe models maintain Wrangler’s renowned ease of customisation with a host of Jeep Performance Parts from Mopar, available when the vehicle arrives in showrooms.

The 2021 Jeep Wrangler 4xe is available in 10 exterior colors: Black, Bright White, Firecracker Red, Granite Crystal Metallic, Hella Yella, Hydro Blue (late availability), Sting-Gray, Snazzberry, Sarge and Billet Silver Metallic. Two Wrangler interior options are available in the 4xe version: Black with Heritage Tan cloth and Black with Dark Saddle leather.

The comprehensive portfolio of more than 300 Jeep Wrangler products will include exclusive Jeep Performance Parts (JPP) offerings, allowing customers the opportunity to expand upon the Wrangler’s fun-to-drive on- and off-road experiences. An industry-first, OEM-developed JPP 2-inch lift kit is specifically engineered and tuned for the Wrangler 4xe plug-in hybrid application. Additional products will include beadlock-capable wheels, off-road bumpers, LED off-road lights and rock rails, just to name a few. More detailed information will be available closer to launch.

Jeep Wrangler 4xe models will be available in Europe, China and the United States by early 2021.