Land Rover Range Rover Supercharged
4.2-litre V8 supercharged with performance but several critical weaknesses. The coolant pipe under the supercharger can rupture suddenly and cause engine damage — preventive replacement with aluminium pipes is strongly recommended. Supercharger torsion coupling wears from around 90,000 km. Budget for high running costs.
Range Rover 4.2 SC: supercharged flagship of the era
In the Range Rover L322 the 4.2-litre supercharged V8 is the ultimate experience of its generation. Massive power, V8 refinement, supercharger directness — all together producing a driving experience the newer Ingenium engines can never replicate. Expensive to run, unforgettable to drive.
Engine Weaknesses 4
The plastic coolant pipe running behind and under the supercharger cracks from thermal cycling-induced embrittlement. Coolant loss is sudden — by the time the overheating warning appears it is usually too late.
Symptoms: Sudden coolant loss, overheating warning, steam, engine damage if reaction is delayed
The Eaton supercharger coupler element — plastic and metal — wears out and gives way. Grinding noises from the supercharger or at idle point to bearing failure. Land Rover has issued a TSB on this subject.
Symptoms: Grinding or rattling noises from the supercharger, hesitation under acceleration, power loss
Like the naturally aspirated V8, the 4.2 SC also has timing chains with plastic guides that can wear. Cold start rattling is the typical warning sign. A missed inspection risks a jumped chain.
Symptoms: Metallic rattling on cold start, check engine light P0008/P0016, power loss
Ignition coils on the 4.2 Supercharged tend to fail — often an entire bank at once. Misfire codes and rough running are typical symptoms. Replacement in sets is recommended.
Symptoms: Rough running when cold, misfire codes P030X, engine running on 6–7 cylinders
Vehicle Weaknesses 8
Wabco or Hitachi compressor loses output pressure due to worn piston rings. Vehicle drops after parking, slow rise, compressor runs continuously. Repair kits available; new compressor approx. 700–900 euros. Regarded as the most common fault on the L322.
Steel body rusts at the rear wheel arches, sills and tailgate. Water collects at the lower tailgate edge and leads to blistering and rust-through. Sill area and running boards are also typical problem zones.
ECUs are located under the front seats and in the engine bay — immediately at risk when water enters through a leaking windscreen or sunroof. Cascading fault messages from air suspension, gearbox and ABS are often a consequence of floor dampness.
ZF 6HP automatic shows gear kick, delayed engagement and torque converter issues when oil changes are skipped. Sensor no longer detects park position. Gearbox oil should be changed every 60,000 km.
Handbrake drum seizes from corrosion; countersunk drum screws corrode and are almost impossible to remove. Actuator module jams with worn drums. Fault code C1A00, brake force sensor shows extreme values. Specialist tool required to release.
Electric steering column adjustment uses plastic components that break when operated. Repair is possible at lower cost using alternative parts. After that, no electric adjustment is possible; steering effort and steering itself are undamaged.
Wiring harness for the rear parking sensors in the rear bumper corrodes from moisture. Control unit fails or sensors themselves drop out. Corroded contacts in the bumper area are the most common cause of PDC failure.
Air conditioning condenser and connecting hoses lose refrigerant due to age and vibration. Air conditioning only blows warm air. Topping up without finding and fixing the leak is only a short-term remedy.
Reports & Tests
On the Range Rover L322, cooling system, electrics and air suspension are reliable money pits.
594 owner complaints filed with NHTSA (2002–2012). Most reported: Powertrain (220), Airbags (56), Body Structure (51).