The fourth-generation Jeep Grand Cherokee (codename WK2) marks a turning point for the model. Developed jointly with Mercedes-Benz (sharing its platform with the ML W166), it abandons the solid axle for independent suspension, offering transformed road handling while retaining excellent off-road capabilities (Quadra-Trac II and Quadra-Drive II systems). It benefited from a major facelift in 2014 (introduction of the excellent 8-speed ZF automatic gearbox and an updated cabin) and a slight retouch in 2017. While its petrol engines (V6 Pentastar and V8 Hemi) shine with their robustness, the diesel version (3.0 CRD / EcoDiesel), highly prized in Europe, suffers from serious reliability flaws. Furthermore, the onboard electronics and the optional air suspension weigh on its overall reliability
The Jeep Grand Cherokee WK2 is an undeniably charming SUV, offering a rare blend of luxury, comfort, and genuine off-road capabilities. However, the choice of engine entirely dictates the ownership experience. The 3.0 V6 diesel engine (CRD/EcoDiesel), which accounts for the overwhelming majority of sales in Europe, is a documented problem engine (fragile injection pump, cracked EGR cooler, faulty crankshaft position sensor). Conversely, the petrol engines (3.6 V6 Pentastar and 5.7 V8 Hemi) are praised by inspection bodies (ADAC, TÜV) for their great mechanical robustness. Regardless of the engine, the temperamental electronics and aging air suspension require a substantial maintenance budget. Buy in petrol if possible, or in diesel only if all critical recalls have been performed with supporting invoices.