2021 LAND ROVER DEFENDER 90

Typical onset: 30,000-60,000 mi

Symptoms: Transmission fluid pooling under vehicle near front-center, Transmission temperature warning on dash, Harsh shifting or slipping when fluid level drops, Pink or red fluid traces visible on cooler lines

Fix: Replace transmission oil cooler and lines, flush transmission if contaminated. 4-6 hours labor depending on access and whether full undertray removal is needed. Dealer-only parts in most cases.

Estimated cost: $1,200-2,200

Typical onset: 20,000-50,000 mi

Symptoms: Clunking on hard acceleration or deceleration, Vibration at idle in Drive that disappears in Park/Neutral, Excessive drivetrain movement visible when rocking vehicle in gear, Shudder during low-speed maneuvers

Fix: Replace transmission mount assembly. Access requires lifting vehicle and supporting transmission. 2-3 hours labor. OEM mounts from Land Rover are recommended as aftermarket options are limited and quality is inconsistent.

Estimated cost: $600-1,000

Symptoms: Sudden metallic knocking or rattling from engine bay, Loss of power, rough running, or immediate stalling, Metal debris visible in oil on dipstick or during oil change, Check engine light with multiple misfire or mechanical fault codes, Oil pressure warning illuminated

Fix: This is the nightmare scenario: piston ring failures, spun bearings, or catastrophic internal damage requiring short block replacement or full engine rebuild. We've seen isolated cases with no clear pattern—some at under 20k miles. 25-40 hours labor for short block swap, often closer to 50+ for full rebuild. Almost always a warranty claim if under coverage, otherwise financially totaling for most owners.

Estimated cost: $15,000-30,000

Typical onset: 40,000-70,000 mi

Symptoms: Hard starting or extended cranking, especially when cold, Loss of power under load or at highway speeds, Engine stumbling or hesitation during acceleration, Fuel pressure fault codes stored

Fix: Replace fuel filter assembly and check for contamination in tank. The inline-six is sensitive to fuel quality issues. 1.5-2.5 hours labor depending on filter location and whether tank inspection is needed. If contamination is present, tank may need dropping and cleaning.

Estimated cost: $400-900

Typical onset: 40,000-80,000 mi

Symptoms: Coolant loss with no visible external leaks, White smoke from exhaust on cold start that persists, Oil contamination visible in coolant reservoir (milky appearance), Overheating episodes without obvious cooling system failure, Rough idle and misfires that worsen over time

Fix: Head gasket replacement on the inline-six requires significant disassembly including intake, exhaust, and accessory removal. Heads should be checked for warping and resurfaced if needed. 18-24 hours labor for both banks. This shouldn't be happening on a 3-4 year old vehicle but we're seeing it.

Estimated cost: $5,500-8,500

Symptoms: Pivi Pro touchscreen freezing or rebooting randomly, Camera system glitches (surround view, rearview), Intermittent warning lights with no stored faults, Key fob not detected errors despite fresh battery, Climate control commands not responding

Fix: Most issues resolved through software updates at dealer level. Persistent problems may require module replacement (usually gateway or infotainment head unit). Diagnosis 1-2 hours, module replacement adds 1-3 hours depending on component.

Estimated cost: $200-1,500