2017 LAND ROVER DISCOVERY

Typical onset: 40,000-90,000 mi

Symptoms: Metallic rattling from engine bay at startup or under load, Loss of power, rough idle, misfires, Check engine light with cylinder misfire codes, Catastrophic failure with knocking, oil pressure loss, seized engine

Fix: The intercooler chiller can degrade and send plastic/rubber debris through the supercharger into the cylinders, scoring cylinder walls and destroying pistons and rings. Repair requires complete engine teardown: remove engine, disassemble, replace pistons, rings, hone or re-sleeve cylinders, new supercharger and intercooler, reassemble. Typical 60-80 labor hours for full rebuild. Some cases need complete short block replacement.

Estimated cost: $15,000-25,000

Typical onset: 50,000-90,000 mi

Symptoms: Transmission slipping, harsh shifts, delayed engagement, Milky or discolored transmission fluid, Overheating warnings on dash, Complete transmission failure if coolant mixes with ATF

Fix: The ZF 8HP transmission oil cooler fails internally, allowing coolant and ATF to mix. Requires oil cooler replacement, complete transmission flush (often multiple flushes), new fluid and filter. If contamination has damaged clutch packs or valve body, full transmission rebuild or replacement needed. 8-12 hours for cooler and flush, 20-30+ for transmission work.

Estimated cost: $2,000-3,500 for cooler/flush; $8,000-12,000 if transmission damaged

Typical onset: 60,000-100,000 mi

Symptoms: Hard starting or extended cranking, Engine stumbling, hesitation under acceleration, Stalling at idle or when fuel tank below half, Check engine light with fuel pressure/trim codes

Fix: In-tank fuel filter and pump module can clog prematurely, starving the engine. Requires dropping the fuel tank, replacing entire fuel pump module with filter. Some techs also replace fuel lines if debris found. 4-6 hours labor. Land Rover parts pricing is obscene.

Estimated cost: $1,800-2,800

Typical onset: 70,000-110,000 mi

Symptoms: Rattling noise from front of engine at cold start, Check engine light with cam/crank correlation codes, Rough running, misfires, Engine won't start if chain has jumped time

Fix: The supercharged V6 can stretch timing chains or wear tensioners, causing timing drift or catastrophic failure if chain jumps. Requires front engine disassembly: remove supercharger, accessories, timing covers, replace chains, guides, tensioners, VVT solenoids. 16-22 hours labor. Do water pump and thermostat while in there.

Estimated cost: $4,500-7,000

Typical onset: 40,000-80,000 mi

Symptoms: Clunking when shifting from Park to Drive or Reverse, Vibration felt through cabin at certain speeds (45-55 mph common), Visible sagging or torn rubber on transmission mount, Excessive driveline movement when accelerating hard

Fix: Hydraulic transmission mount fails early due to weight and torque of this vehicle. Requires lifting vehicle, supporting transmission, removing mount, installing new unit. Sometimes also need to address transfer case mounts. 3-4 hours labor for transmission mount alone.

Estimated cost: $800-1,400

Symptoms: Instrument cluster going dark or displaying random warnings, Infotainment system freezing, rebooting randomly, Phantom warning lights (parking brake, airbag, ABS), Intermittent electrical accessory failures

Fix: Software bugs and failing modules plague these vehicles. Instrument cluster may need replacement or reprogramming (covered by recall for some cases). Body control module and gateway module also common culprits. Diagnosis is time-consuming (2-4 hours), parts expensive, programming required. Many problems require dealer-level diagnostics.

Estimated cost: $1,500-3,500 depending on module

Typical onset: 60,000-100,000 mi

Symptoms: Vehicle sits low on one corner or entire side, Suspension fault warning on dash, Compressor running constantly, audible from rear, Rough ride, bottoming out over bumps

Fix: Air springs develop leaks, compressor wears out from overwork. Individual struts can be replaced (3-4 hours each corner), compressor is 4-5 hours. Many owners convert to coil springs to eliminate ongoing air suspension costs. Full air suspension rebuild with OE parts is wallet-destroying.

Estimated cost: $1,200-2,000 per corner for strut; $2,000-3,000 for compressor; $3,000-5,000 for coil conversion