Land Rover Range Rover Sport
3.0-litre V6 Supercharged as the smaller blower option. The coolant crossover pipe beneath the supercharger is system-critical — if it fails, engine damage is often unavoidable. Preventive replacement with aluminium pipes is strongly recommended. Check supercharger coupling and timing chain regularly. Water pump replacement requires supercharger removal (expensive).
Sport 3.0 SC: V6 with supercharger character
The supercharged V6 gives the Range Rover Sport L494 its own personality. The supercharger whine at full throttle is unmistakeable. For drivers who value emotion and plan ahead for cooling system preventive visits.
Engine Weaknesses 4
The plastic coolant crossover pipe running under the supercharger cracks suddenly from embrittlement. The engine is often irreparably overheated before the temperature warning appears. Very common cause of engine damage. Upgrade to aluminium pipes strongly recommended.
Symptoms: Sudden coolant loss (often instantaneous), overheating warning, steam, potential engine damage
Like the V8 versions, the AJ126 has timing chains with plastic guides. From around 100,000 km guides and tensioners can deteriorate. The supercharger setup increases engine load and accelerates wear.
Symptoms: Metallic rattling on cold start, P0008/P0016, engine light
The Eaton Roots supercharger torsional coupler breaks apart. The rattling sounds like gravel in the supercharger at idle and disappears under load. Land Rover TSB available. Typical failure around 90,000–110,000 km.
Symptoms: Rattling from supercharger at idle, decreasing supercharger output, power drop
The AJ126 water pump typically fails around 80,000 km. Since the supercharger must be removed for the job (12 hours labour), it makes sense to replace the coolant pipes and thermostat at the same time.
Symptoms: Coolant loss, tendency to overheat, noise from the water pump, coolant low warning
Vehicle Weaknesses 8
Air suspension compressor and air springs fail regularly. Vehicle drops after parking, compressor runs continuously. Valve block, height sensors and reservoir tank also affected. Replacing one air spring costs over 1,500 euros.
Panoramic roof drain hoses corrode at the connector fitting and break off. Rainwater runs uncontrolled into the body, collects under the driver's seat and damages the audio amplifier and ECUs. Several vehicles written off.
Door lock module defective — doors can open unintentionally while driving. Land Rover recall for over 65,000 vehicles (2014–2016). Sealed unit must be completely replaced; no partial repair possible.
Brake discs warp prematurely due to the vehicle's high mass. Brembo calipers with steel guide pins in aluminium housings corrode and seize. Average disc life approximately 50,000 km. ECU-controlled pistons require specialist diagnostics.
Diesels from 2016 with AdBlue/SCR systems show excessive consumption and sensitive NOx sensors. Overfilling damages the sensor. Vehicle immobilises itself when AdBlue tank is empty. Fault diagnosis starts at 75 euros.
Front lower wishbones (straight and curved variants) wear early due to vehicle weight. Bushings are barely possible to press in correctly — full arm replacement recommended. Wheel alignment essential after repair.
The most common cause of the SRS warning light is a broken wire in the thin cables under the front seats. Land Rover solution: overlay cable repair. Cheaper than replacing the control unit. Simple OBD diagnosis is sufficient to narrow down the fault.
InControl Touch and InControl Touch Pro freeze while driving or boot spontaneously. Instrument cluster and infotainment go black simultaneously. Bluetooth connections drop. Software updates improve the situation but do not resolve the issue permanently.
Reports & Tests
The Range Rover Sport L494 shows surprisingly few problems following the platform change.