2024 MORGAN PLUS SIX

Typical onset: 15,000-35,000 mi

Symptoms: Clunking when shifting from Park to Drive or during throttle transitions, Excessive driveline vibration at idle, Transmission positioning visibly shifted in engine bay

Fix: Morgan's hand-built ash wood frame and aluminum body flex differently than a unibody, stressing the BMW transmission mounts prematurely. Replacement requires removing undertray panels and heat shields, then supporting the transmission. 2.5-3.5 labor hours. OEM BMW mounts are mandatory—aftermarket units fail faster.

Estimated cost: $650-950

Typical onset: 20,000-50,000 mi

Symptoms: Red transmission fluid pooling under engine bay, Low transmission fluid warning on iDrive display, Erratic shifting or limp mode activation, Burnt transmission fluid smell after highway driving

Fix: The cooler lines route close to the exhaust manifold in Morgan's tight engine bay with less heat shielding than a BMW chassis. Heat causes premature hardening and cracking of rubber sections. Requires removing side panels for access. 3-4 hours labor plus fluid flush. Inspect all rubber hose sections and replace proactively—cooler itself rarely fails.

Estimated cost: $1,200-1,800

Symptoms: Condensation visible inside headlight lens after rain or car wash, Intermittent headlight failure warnings, Complete headlight failure on one or both sides, Corrosion visible on LED driver board connections

Fix: Morgan's traditional body construction lacks the sealed wiring harness grommets of modern cars. Water migrates down wiring into the LED modules. The BMW-sourced headlight assemblies aren't designed for this exposure level. Entire assembly replacement required—modules aren't serviceable separately. 1.5-2 hours per side. Apply dielectric grease to all connectors and add aftermarket vent tubes as preventive measure.

Estimated cost: $2,800-4,200

Symptoms: Intermittent electrical gremlins (wipers, cooling fans, fuel pump), Multiple unrelated fault codes appearing simultaneously, Corroded or green-tinged fuse terminals, No-start conditions in humid weather

Fix: The open body design and minimal weather sealing allow moisture into the engine bay fuse box, especially in wet climates. Individual fuse replacement doesn't solve it—entire fuse box requires replacement when corrosion spreads. 2-3 hours labor. Preventive: apply di-electric grease to all fuse contacts annually and consider a waterproof fuse box cover modification.

Estimated cost: $800-1,400

Typical onset: 40,000-70,000 mi

Symptoms: Oil smell from engine bay after sustained driving, Minor oil residue on valve cover edges, Oil consumption between changes (1 quart per 3,000 mi), No visible drips but dirty engine bay accumulation

Fix: Known BMW B58 issue that Morgan inherits. The plastic valve cover gasket hardens from heat cycling. In Morgan's engine bay with less airflow than a BMW chassis, degradation accelerates slightly. Valve cover removal requires disconnecting ignition coils and various sensors. 3.5-4.5 hours labor. Replace all gasket components including bolt grommets.

Estimated cost: $900-1,350

Typical onset: 25,000-60,000 mi

Symptoms: P0496 or P0455 EVAP codes, Check engine light during hot weather or after refueling, Fuel smell near filler area, Rough idle immediately after cold start

Fix: The evaporative emissions system components (purge valve, vent valve) are mounted in exposed locations with BMW-spec parts not hardened for open-air use. Heat and moisture cause premature failure. Diagnosis requires smoke test (0.5 hours), replacement of failed valve (1-1.5 hours). Common to replace purge valve and check valve together preventively.

Estimated cost: $450-750