Land Rover LR4: common faults & what to check

Which Land Rover LR4 are you looking at?

4 generation variants documented. Pick the shape you recognise: the faults, the servicing and the timeline below all narrow to it. Free, no account needed.

Engine not documented

4 variants documented

1989–2000L3181989–2000L318Engine not documented for this generationEngine not documentedDocumented issues0 knownSee faults & what to checkPhoto: Vauxford via Wikimedia Commons, CC BY-SA 4.0.

2000–2005D22000–2005D2Engine not documented for this generationEngine not documentedDocumented issues0 knownSee faults & what to checkPhoto: Tennen-Gas via Wikimedia Commons, CC BY-SA 3.0.

2005–2017D32005–2017D3Engine not documented for this generationEngine not documentedDocumented issues8 knownSee faults & what to checkKickTyres illustration, not a photograph.

2017–nowD52017–nowD5Engine not documented for this generationEngine not documentedDocumented issues0 knownSee faults & what to checkKickTyres illustration, not a photograph.

Start your free check on this Land Rover LR4

No plate needed. You get the risk score, the buyer's checklist and the guided inspection for the exact car you picked above — not the whole nameplate.

The checks worth doing on a Land Rover LR4 before you hand over any money. Every documented fault is listed below, each with its own page.

• Serious issue

  This is the single most important pre-purchase check for any TDV6 Discovery 3 or 4.

  See why

  TDV6 2.7 Oil Cooler Seal Failure and Oil-Into-Coolant Contamination

  The 2.7 TDV6 engine (Discovery 3 and 4, also Range Rover Sport TDV6) is widely regarded as the single most costly common failure in the Land Rover Discovery 3/4 ownership experience. The oil cooler is integrated into the engine block adjacent to the coolant passages. The internal seals between the oil and coolant circuits degrade and fail, allowing engine oil to enter the coolant system. The result is a thick, sludgy emulsion that blocks the small coolant passages, causing overheating, and if not caught early, warped heads, cracked liners, or complete engine failure. Repair requires engine removal and full oil cooler rebuild. The fault is so consistently documented across UK, AU, NZ, and SA markets that it is covered in virtually every TDV6 buyer's guide ever written.

  What you would notice

  • Thick brown or tan 'milkshake' emulsion visible in the coolant reservoir
  • Coolant level dropping without visible external leak
  • Engine overheating gauge reading high, especially in traffic
  • Oil pressure warning light if sludge blocks oil galleries
  • Coolant smell from inside the cabin (heater core blocked by emulsion)

  Typically $4,500–$9,000 to put right.

• Serious issue

  Cold-start the engine and listen carefully for a metallic rattle from the top before oil pressure builds.

  See why

  TDV6 2.7 Secondary Timing Chain Wear – Chain Between Camshafts

  The Ford-PSA TDV6 2.7-litre diesel fitted to Discovery 3 and 4 uses multiple timing chains. The secondary chains that run between the two camshafts on each bank wear significantly faster than the primary drive chain. Stretched secondary chains allow cam timing to drift, causing rough running, power loss, and fault codes. If ignored, a chain can jump a tooth or snap, bending valves and causing catastrophic engine damage. The failure is extensively documented and repair requires significant disassembly. Any vehicle over 120,000 km without documented chain replacement is high-risk.

  What you would notice

  • Metallic rattling from the engine on cold start that may diminish once warm
  • P0016, P0017, P0018, or P0019 cam-crank timing correlation fault codes
  • Rough running or misfires under load
  • Reduced power and turbo response
  • Engine management warning light

  Typically $4,000–$8,500 to put right.

• Serious issue

  Remove sump and inspect oil pump drive sprocket for cracked or stripped teeth.

  See why

  TDV6 2.7 Oil Pump Drive Sprocket Failure

  The 276DT 2.7 TDV6 engine uses a plastic-toothed sprocket to drive the oil pump off the crankshaft. The sprocket teeth strip or the sprocket body fractures under thermal cycling and chain load, immediately stopping oil pump drive. Oil pressure drops to zero within seconds and the engine suffers catastrophic bearing and bore damage before the oil pressure warning lamp can prompt driver response. The failure is most common between 80,000 and 150,000 km but can occur earlier with poor oil change intervals.

  What you would notice

  • Sudden oil pressure warning light illuminating at speed with no prior warning
  • Loud knocking or rattling from engine followed rapidly by seizure
  • Metal swarf or plastic fragments visible in drained engine oil
  • Engine cuts out under load with no restart possible

  Typically $2,500–$25,000 to put right.

• Serious issue

  Probe suspected areas with an awl.

  See why

  Front Differential Mounting Crossmember Corrosion Perforation

  The front differential and lower wishbone rear pick-up points are carried by a fabricated steel crossmember that forms part of the forward chassis structure. The crossmember is box-section steel and traps road contamination and moisture at welded seams. Internal corrosion progresses unseen until the section walls perforate. In advanced cases the differential mounting captive nuts pull through the corroded metal and the front differential shifts under load. This is a structural failure with implications for front geometry, crashworthiness, and WoF/MoT compliance.

  What you would notice

  • Visible rust perforation or flaking on the underside crossmember behind the front differential
  • Clunking or movement from front differential under acceleration or braking
  • WoF or MoT rejection citing structural corrosion to chassis member
  • Differential mounting bolts loose or unable to be torqued due to corroded captive nuts

  Typically $3,500–$12,000 to put right.

• Serious issue

  Inspect dust boot condition visually.

  See why

  Front Lower Wishbone Ball Joint Wear and Failure

  The front lower wishbone ball joints on the Discovery 3 and 4 are loaded heavily by the vehicle's considerable kerb weight and off-road use. The ball joint dust boot splits readily when contacted by terrain, allowing water and grit to enter and rapidly accelerate wear of the ball and socket. Worn joints develop measurable axial and radial play. Unlike some designs, the ball joint is integral to the wishbone arm on some variants requiring full arm replacement. Advanced wear can result in sudden joint separation causing complete loss of front wheel control.

  What you would notice

  • Clunking or knocking from front suspension when traversing bumps or turning at low speed
  • Vague or wandering steering with increased effort required to maintain straight line
  • Visible play at ball joint when tyre is rocked in vertical plane
  • WoF rejection for excessive ball joint wear or damaged ball joint boot

  Typically $600–$2,200 to put right.

• Costly issue

  Park the vehicle on flat ground overnight and check it in the morning - a corner that sags overnight indicates a leaking air spring or valve.

  See why

  Air Suspension Corner Failure - Height Sensor, Air Spring, and Compressor

  The Discovery 3 and 4 (LR3/LR4) use a full air suspension system with corner-specific height sensors, air springs, a compressor, and a valve block. All four corners are independently susceptible to failure. Height sensors develop corrosion and fault at the wiring connector causing the vehicle to incorrectly control ride height. Air springs perish and split (particularly rear springs on high-mileage vehicles). The compressor wears out and the valve block develops leaks. These failures are so prevalent that multiple aftermarket air-to-coil conversion kits exist specifically for this generation. The fault pattern is documented across every major Land Rover owner forum in AU and NZ.

  What you would notice

  • Vehicle sitting low on one or more corners on startup
  • Air suspension warning light or message
  • Compressor running continuously attempting to maintain pressure
  • Vehicle taking longer than normal to rise from parked height
  • Hissing sound from a corner of the vehicle indicating air spring leak

  Typically $800–$3,500 to put right.

What these repairs cost on other cars

Some of the Land Rover LR4’s documented faults are repairs other models share. Each page lists the documented NZ cost for every model it affects.

• Timing Chain Replacement Cost

Other Land Rover models