2003 Jeep Liberty V6 4x4

A 3.7-liter, 90-degree, DOHC 12-valve PowerTech V-6 (basically the Grand Cherokee's optional 4.7L V-8 with two cylinders lopped off) matched with a 5-speed manual is standard on the Limited Edition and optional on the Sport. V-6 ratings are a lusty 210 bhp at 5,200 rpm and an impressive 235 lb.-ft. of torque at 4,000 rpm. Engine response is very good at low speeds and in mid-range. While induction noise on the early production vehicles we drove was a bit high, the peppy powerplant never sounded labored. The block is cast-iron with a compacted-graphite bedplate for added rigidity, topped by aluminum heads with a cam on each bank. Features include a lightweight composite intake manifold with tuned runners, an active knock-sensor system that adjust for a range of fuels and a gear-driven balance shaft to minimize vibration.

The rear can be opened by pressing the cargo-door button on the keyless-entry transmitter, pulling the release handle or simply turning the key in the swing-gate lock.

Overseas, a 2.25-liter SOHC Common Rail Direct Injection (CRD) turbocharged I-4 diesel develops 140-bhp (104kW) at 4,000 rpm and 253 lb.-ft. (343 Nm) of torque at 2,500 rpm. (The diesel wasn't available for testing at press time.)


An option with the V-6 is the 45RFE multi-speed automatic, first introduced in the 1999 Grand Cherokee. This automatic is especially useful in low-range: engine braking helps the vehicle descend steep grades and clamber over off-road obstacles. The 45RFE configuration gives the Liberty a 5,000-pound towing capability.


Downstream of the transmission, the Liberty offers a choice of four-wheel-drive systems. The CommandTrac part-time configuration normally operates in rear-drive. Shifting into 4WD engages the front wheels. SelecTrac adds a full-time 4WD mode—very handy in torrential rain, heavy snow or even on gravelly mountain or sloppy forest roads. Both systems are dual-range. The anti-lock brakes and the automatic transmission compensate accordingly when low-range is engaged.