In 2002, the Jeep Liberty offered two engine options: a 2.4-liter inline-4 and a 3.7-liter V6. This setup gave buyers a choice between efficiency and power, with the V6 typically favored on mid-to-upper trims. This article explains the engines, their specs, and how to identify which one is under the hood.
The Liberty’s 2002 lineup reflected Jeep’s balance between everyday practicality and off-road capability. The 2.4L inline-4 aimed at better fuel economy, while the 3.7L V6 provided stronger acceleration and towing potential. Below are the two engines you could find under the hood, along with practical notes on how to tell them apart.
Engine options in the 2002 Jeep Liberty
Two engines powered the 2002 Liberty, each with distinct characteristics. The following at-a-glance details help you recognize which one your vehicle has.
- 2.4-liter inline-4 (2.4L I4) — roughly 142–143 horsepower and about 154 lb-ft of torque. Usually paired with a 4-speed automatic transmission; available in rear- or four-wheel-drive configurations.
- 3.7-liter PowerTech V6 — roughly 210 horsepower and about 235 lb-ft of torque. Also typically paired with a 4-speed automatic transmission; available in rear- or four-wheel-drive configurations.
Note: Engine output can vary slightly by market, emissions equipment, and drivetrain configuration. The two powertrains represent the main options offered for the 2002 Liberty in North American markets.
Engine specifications at a glance
- 2.4L I4: ~142–143 hp, ~154 lb-ft
- 3.7L V6: ~210 hp, ~235 lb-ft
These figures reflect typical factory ratings for common 2002 Liberty configurations. Individual vehicles may show small variations.
How to tell which engine is in your Liberty
If you’re trying to confirm the exact engine in a 2002 Liberty, these practical checks can help. Visual cues, labels, and records are your best guides when documentation is incomplete.
- Inspect the engine bay for a displacement badge or stamping on the engine itself or on nearby labels. A 2.4L engine will have markings corresponding to 2.4 liters, while a 3.7L engine will show 3.7 liters.
- Look at the engine layout. The 2.4L inline-4 is a straight-four configuration, whereas the 3.7L V6 has a V-shaped six-cylinder layout with a different intake and valve-cover arrangement.
- Check the vehicle’s original documentation or window sticker if available. Those records list the factory-installed engine and can confirm which powertrain your Liberty received.
For a definitive answer, a Jeep dealer or a trusted mechanic can verify the engine type using the VIN and the vehicle’s service history.
Summary
The 2002 Jeep Liberty offered two engines: a 2.4-liter inline-4 and a 3.7-liter V6. The choice affected economy and performance, with the 3.7L V6 delivering stronger power for towing and highway driving. By checking engine labels, visual layout, and official records, you can determine which engine your Liberty has and plan maintenance or parts accordingly.