2007 LAND ROVER DISCOVERY

Typical onset: 60,000-120,000 mi

Symptoms: Coolant loss with no external leaks, White smoke from exhaust, Overheating episodes, Milky oil on dipstick, Rough idle and misfires, Sudden catastrophic seizure in worst cases

Fix: The 4.4L V8 suffers from porous cylinder blocks and slipped liners allowing coolant into cylinders. Once symptoms appear, a full engine rebuild or replacement is required. Rebuild involves complete disassembly, block sleeving/replacement, new pistons, rings, bearings, gaskets—essentially everything. Expect 40-60 labor hours for proper rebuild, or 25-35 hours for used engine swap.

Estimated cost: $8,000-15,000

Typical onset: 70,000-130,000 mi

Symptoms: Vehicle sagging at one or more corners overnight, Compressor running constantly or excessively, Suspension fault warning on dash, Inability to raise vehicle to off-road height, Rough ride quality

Fix: Air bags crack and leak, compressor wears out from overwork. Single bag replacement is 2-3 hours each corner. Compressor replacement is 3-4 hours. Many owners eventually convert to coil springs ($1,500-2,500) to eliminate ongoing air suspension expenses, though this sacrifices off-road capability and ride height adjustment.

Estimated cost: $800-1,500 per bag; $1,800-2,800 compressor

Typical onset: 80,000-150,000 mi

Symptoms: Transmission fluid puddle under vehicle, Pink fluid leaking near radiator area, Transmission slipping or delayed engagement, Overheating transmission warnings

Fix: Steel cooler lines rust through where they pass through the chassis, especially in salt-belt states. Lines run the length of the vehicle and require removal of belly pans and heat shields. Both lines should be replaced together as preventive measure. 4-6 hours labor plus refilling and flushing transmission fluid.

Estimated cost: $800-1,400

Typical onset: 90,000-140,000 mi

Symptoms: HDC fault or unavailable message, Transfer case will not shift to low range, Grinding noise when attempting 4WD engagement, Flashing neutral light on transfer case selector

Fix: The electric shift motor fails, or internal shift fork wears and breaks. Motor-only replacement is 2-3 hours and often fixes early issues. If fork is damaged, transfer case must be removed and disassembled, 8-12 hours labor. This is a known weak point in the Terrain Response system.

Estimated cost: $600-1,200 motor only; $2,500-4,000 internal repair

Typical onset: 100,000-160,000 mi

Symptoms: Gear oil leak at front of rear differential, Whining or howling noise from rear that changes with speed, Clunking during acceleration or deceleration

Fix: Pinion seal leaks are common and lead to bearing failure if ignored. Seal replacement alone is 3-4 hours with driveshaft removal. If bearing is damaged, differential must be rebuilt with new crush sleeve, bearings, and setup, adding significantly to labor (10-14 hours total).

Estimated cost: $500-900 seal only; $2,000-3,200 full rebuild

Typical onset: 70,000-120,000 mi

Symptoms: Excessive vibration at idle in Drive, Clunk when shifting from Park to Drive or Reverse, Visible engine movement when accelerating/braking, Harsh engagement feel

Fix: Hydraulic engine and transmission mounts collapse with age. Front engine mount and transmission mount most critical. Each mount is 2-3 hours labor due to weight and access. All three major mounts typically need replacement around same time for best results.

Estimated cost: $400-700 per mount

Symptoms: Hard starting or extended cranking, Rough idle and hesitation, Loss of power under load, Check engine light with lean codes

Fix: In-tank fuel pump strainer and external fuel filter clog from tank debris, especially in higher-mileage examples or vehicles sitting long periods. Requires dropping fuel tank (4-5 hours) to access pump assembly and replace strainer. External filter should be replaced simultaneously. Using quality fuel and adding cleaner periodically helps prevent buildup.

Estimated cost: $600-1,100