Land Rover Discovery P360
The 3.0L Ingenium straight-six petrol with 48V MHEV is the most reliable modern JLR engine. Note oil filter housing recall N908. Turbocharger and cooling system benefit from regular oil changes and adequate cool-down time after spirited driving.
Discovery P360: inline-six for seven
In the big Discovery the P360 surprises with its smoothness. Seven people are transported quietly and quickly with no diesel rumble disturbing the atmosphere. The mild hybrid helps in urban use. For families who want to avoid diesel.
Engine Weaknesses 6
Incorrect plastic specification for the Ingenium I6 3.0L petrol oil filter housing. The housing can crack and spray engine oil onto hot components. Fire risk. Recall N908.
Symptoms: Visible oil leak, oil puddles, oil warning light, in severe cases smoke or fire
The PT306 inline-six shows timing chain wear with rattling on cold start. Although more robust than the 2.0L four-cylinder, wear and tensioner issues are documented at higher mileages.
Symptoms: Metallic rattling on cold start, rough idle, engine warning light with camshaft correlation errors
PT306 turbochargers develop bearing wear and oil blow-by particularly with insufficient oil change intervals. Allow cool-down time after spirited driving.
Symptoms: Whistling or howling noise, smoke from exhaust, power loss, elevated oil consumption
The PT306 water pump and thermostat are known wear items. Failure leads either to persistent undercooling or dangerous overheating.
Symptoms: Temperature fluctuations, coolant loss, steam from bonnet, overheating warning
The turbocharged PT306 inline-six shows elevated oil consumption at higher mileages, especially under hard use. Causes: turbocharger shaft seal wear and short-trip degradation.
Symptoms: Regular top-ups required, faint blue smoke under acceleration
On the 48V mild hybrid system, the DC-DC converter from 48V to 12V fails. Without a working converter the 12V battery is not charged — complete vehicle shutdown is possible.
Symptoms: Charging system fault warning, red battery symbol, infotainment shutdown
Vehicle Weaknesses 8
The Discovery 5 also suffers from the typical Land Rover air suspension weakness. Air springs become porous after 80,000–120,000 km. The compressor becomes overloaded and early system failures occur.
The InControl Touch Pro system of the Discovery 5 frequently freezes, responds with a delay or shows a black screen. Software updates help; hardware defects on the controller require replacement.
The seal around the tail light unit on the tailgate becomes porous. Water enters the boot area through the rear lights. The Gore-Tex membrane does not keep moisture out permanently.
The InControl system does not fully shut down when the vehicle is left unlocked. Battery is drained overnight. Typical weakness of all JLR models of this generation.
Rear brake discs corrode heavily between uses — typical on vehicles with little city or motorway driving. Corrosion reduces braking performance and causes vibration.
The windscreen seal becomes leaky and allows water to enter the driver or passenger footwell. Control units in the footwell can be damaged. Well-known issue in L462 forums.
The Discovery 5 has an aluminium body that is prone to galvanic corrosion where it contacts steel fasteners. Particularly visible at screw connections and brackets.
The ZF 8HP gearbox shows torque converter shudder or judder in isolated cases, particularly at low temperatures. A transmission fluid flush and software update resolves the issue in most cases.
Reports & Tests
105 owner complaints filed with NHTSA (2017–2026). Most reported: Electrical (38), Other (26), Powertrain (17).