Jeep Wrangler JL vs. JK: A Complete Breakdown
If you regularly visit forums about Jeeps or other interest groups, you may frequently encounter discussions comparing various models. The debate about Jeep Wrangler JL vs. JK is one you've probably seen. With the JL introduced in 2018 to replace the decade-old JK, Jeep made some significant changes to improve performance, comfort, and technology. But how do these two models really stack up?
1. Exterior Design: Modern vs Classic
One of the first things you’ll notice is the difference in their exterior styling. While both Jeep JK and JL maintain the iconic Jeep DNA with their boxy shape, round headlights, and seven-slot grille, the JL brings subtle yet impactful updates to modernize its appearance.
Grille Design
The JL's grille has a slight “kink” at the top and a wider gap between the slats. The headlights extend into the grille, a throwback to older Jeep models. The Jeep badge above the grille is also gone, as the design now speaks for itself.
The JK has a simpler grille design with narrower slats and a flat profile. The "Jeep" badge sits prominently above the grille.
Fender Flares and Lights
JL is Integrated LED daytime running lights and turn signals in the fender flares on higher trims. A cleaner, more modern look. JK's Traditional turn signals are placed below the headlights, and the fender flares lack integrated lighting.
Windshield and Hood
JL: The windshield is raked back 6 degrees for better aerodynamics and fuel efficiency. Its folding mechanism is simplified, requiring only four screws to lower. The hood features larger bump stops for easier windshield folding and integrated washer nozzles.
JK: The windshield is more upright, and folding it requires significantly more effort. The hood design is simpler, with smaller bump stops and no integrated nozzles.
Rear Design
JL: LED tail lights (available on higher trims), a relocated license plate to the bumper for a cleaner look, and a rear-view camera integrated into the spare tire mount. A small spoiler on the hardtop improves aerodynamics.
JK: Incandescent tail lights, a license plate mounted on the body, and a simpler, boxier rear design. No rear-view camera or spoiler.
2. Interior: Comfort and Technology Take the Lead
Inside, the JL's interior has been completely redesigned with modern technology and comfort enhancements that set it apart from the JK.
Dashboard and Infotainment
JL: Features an updated dashboard with higher-quality materials and a more ergonomic design. Higher trims offer an 8.4-inch UConnect touchscreen system with smartphone integration, navigation, and a backup camera.
JK: Simpler and more utilitarian. The infotainment system, if present, is basic compared to the JL, and there’s no backup camera.
Door Mechanism
JL: Includes a new door-check system that holds the door in place and assists with closing, similar to modern cars.
JK: Relies on a traditional vinyl limiting strap to control the door’s movement.
Creature Comforts
JL: Offers modern features like push-button start, heated steering wheel, and dual-zone climate control (on higher trims).
JK: Lacks these creature comforts, sticking to a simpler design that appeals to traditionalists.
3. Performance and Efficiency: A Step Forward
Under the hood and in the suspension, the JL has made noticeable advancements while retaining the rugged off-road capability Jeep is known for.
Engines and Transmissions
JL: Comes standard with a redesigned 3.6L Pentastar V6 (6% more efficient than the JK’s version) and offers an 8-speed automatic transmission for smoother shifts and better fuel economy. Future options include a 2.0L turbocharged engine and a diesel variant.
JK: Offers the same 3.6L Pentastar V6 (or 3.8L in earlier models) but pairs it with a 5-speed automatic or 6-speed manual transmission.
Axles and Suspension
JL: Features upgraded Dana axles with higher standard gear ratios (3.45 vs. the JK’s 3.21). The rear shocks are outboard-mounted for improved stability, and a front-axle disconnect system reduces drag and increases efficiency in 2WD mode.
JK: Uses more traditional Dana 30 and Dana 44 axles, with inboard-mounted shocks and no front-axle disconnect.
Articulation and Trail Performance
Both the JL and JK feature a similar five-link coil spring suspension that delivers excellent flex and articulation for off-road adventures. However, the JL’s improved steering and shock placement provide slightly better stability and control.
4. Driving Dynamics: On-Road Refinement Meets Off-Road Grit
Steering
- JL: Includes an electronically assisted power steering system for better control and reduced effort, especially at low speeds.
- JK: Relies on a traditional hydraulic power steering system, which feels heavier and less refined on-road.
Aerodynam
Aerodynamics and Efficiency
- JL: Improved aerodynamics (e.g., raked windshield, grille design, rear spoiler) contribute to better fuel efficiency and reduced wind noise.
- JK: Boxier design creates more drag, resulting in slightly worse fuel economy and noisier highway driving.
5. Underbody and Protection: Subtle but Meaningful Changes
EVAP Canister
JL is relocated to a protected area, reducing the risk of damage on trails. The EVAP canister of JK is exposed and prone to damage, requiring aftermarket skid plates.
Skid Plates and Cross-Members
Both models feature similar factory skid plates and protective cross-members, maintaining their off-road durability.
6. Customization Potential: The Aftermarket Evolution
Both the JK and JL are Jeep Wrangler models, meaning they are highly customizable. However, the JK has a decade’s worth of aftermarket support, while the JL is still catching up in terms of lift kits, bumpers, and other mods for Jeep. That said, the JL’s modern design opens new possibilities for tech-based upgrades and efficiency-focused mods.