Porsche Cayenne Years to AvoidThe weakest years — and the one you should buy instead

Plastic coolant pipes under the intake manifold become brittle and crack, leading to significant coolant leaks and potential engine overheating. The coolant reservoir also commonly fails. This is a widespread, almost guaranteed failure point.

The center support bearing for the driveshaft (often called the Cardan shaft) fails prematurely, causing loud thumping, clunking, or vibrating noises, especially when accelerating or decelerating. If ignored, it can lead to catastrophic failure.

Components like the air compressor, air struts/bags, and valve blocks are prone to failure, leading to a sagging suspension, inability to adjust ride height, and costly repairs. The system is complex and expensive to diagnose and fix.

Plastic coolant pipes under the intake manifold become brittle and crack, leading to significant coolant leaks and potential engine overheating. The fix involves replacing plastic with aluminum pipes.

The center support bearing for the driveshaft commonly fails, causing severe vibrations, clunking noises, and eventually rendering the vehicle undrivable if the shaft breaks. Requires full shaft replacement.

Components such as the air compressor, air struts, and valve block are prone to failure, leading to vehicle sagging, inability to adjust ride height, and a harsh ride. Compressor failure is particularly common.

Plastic coolant pipes and fittings under the intake manifold on V8 engines are known to crack and leak. The original plastic T-fittings also fail. This leads to coolant loss, potential engine overheating, and costly repairs as the intake manifold must be removed.

The rubber support bearing for the center driveshaft commonly fails, causing vibrations, clunking noises, and eventually a complete driveshaft failure. While the bearing can be replaced, often the entire shaft is swapped.

Components such as the air compressor, air springs (struts), valve block, and ride height sensors are prone to failure. This results in sagging suspension, particularly overnight, or complete inability to adjust ride height, leading to a harsh ride or unsafe handling.

The center support bearing for the driveshaft commonly fails, leading to vibrations, clunking, and eventually catastrophic failure if not addressed. This is a well-documented weakness.

On V8-equipped models, the original plastic coolant pipes located under the intake manifold are prone to cracking and leaking, leading to significant coolant loss and potential engine overheating. This often requires replacing them with upgraded aluminum pipes.

If equipped, the air suspension system's compressor, valve block, and individual air springs/struts are common failure points. Leaks can cause the vehicle to sag, while compressor failure leads to loss of ride height adjustment.

Plastic coolant pipes under the intake manifold become brittle and crack, leading to significant leaks and potential overheating. The coolant pipe T-connector near the firewall is also a common failure point. Early warning signs include coolant smell, puddles, or low coolant warnings.

The center support bearing for the driveshaft is prone to premature failure, causing noticeable vibrations (especially under acceleration) and clunking noises. If ignored, this can lead to catastrophic driveshaft separation.

Common electrical issues include tail light harness melting (causing intermittent light failures), window regulator failures, faulty ignition coils, and various sensor failures (e.g., camshaft position sensors) leading to CELs. Battery drain is also a frequent complaint.

Plastic coolant pipes, thermostat housings, and expansion tanks are prone to cracking and leaking, often leading to sudden coolant loss. The coolant pipe replacement is labor-intensive, especially on V8 models where pipes are located under the intake manifold.

The center support bearing for the driveshaft is a common failure point, causing vibrations and clunking noises. While the bearing itself is not overly expensive, replacement can be involved, or a full driveshaft replacement is often recommended.

Components such as the air compressor, air struts, and various sensors or valve blocks can fail, leading to uneven ride height, slow leveling, or a complete loss of suspension function. Repairs are notoriously expensive, often costing thousands per corner.

Bore scoring, particularly in colder climates or with neglected oil changes, can lead to complete engine failure. High-Pressure Fuel Pumps (HPFP) are also a known failure point on direct-injection V8s, causing misfires and stalling.

Air springs (struts), air compressor, and valve block failures are common. Symptoms include a sagging vehicle, 'chassis system faulty' warnings, and inconsistent ride height. Repairs are frequent and expensive.

Common issues include failing window regulators, HVAC blend door actuators, instrument cluster pixel degradation, and intermittent sensor faults. While not always critical, these issues are frequent and can be frustrating.

The plastic coolant pipes (if not updated) can crack and leak, leading to engine overheating. Additionally, the aluminum coolant pipe seals can fail, and on some V8s, cam deviation bolts can back out, causing significant valvetrain damage.

The air suspension compressor can fail, or the air struts themselves can develop leaks, causing the vehicle to sag or ride harshly. This system is complex and expensive to diagnose and repair.

The rubber support bearing for the driveshaft commonly fails, causing vibrations and clunking noises, especially under acceleration. If ignored, it can lead to catastrophic driveshaft failure.