2011 MASERATI GRANTURISMO

Typical onset: 40,000-80,000 mi

Symptoms: sudden metallic knocking or rattling from engine bay, oil pressure warning light, loss of power, metal debris in oil filter during changes

Fix: The 4.7L V8 is notorious for spun rod bearings due to inadequate oiling under high-load conditions. Requires full engine-out rebuild or short block replacement. 40-60 hours labor plus parts. Many owners discover this after catastrophic failure requiring crankshaft replacement, all bearings, and often piston work.

Estimated cost: $15,000-28,000

Typical onset: 50,000-90,000 mi

Symptoms: transmission slipping or harsh shifting, milky transmission fluid (coolant contamination), overheating transmission, erratic gear changes

Fix: The internal oil cooler fails and allows coolant to mix with transmission fluid, destroying clutch packs and solenoids. Requires cooler replacement plus full transmission fluid flush at minimum. If caught late, transmission rebuild or replacement needed. 8-12 hours labor for cooler only, add 20-30 hours if transmission damaged.

Estimated cost: $2,500-4,000 (cooler only), $8,000-15,000 (with transmission work)

Typical onset: 60,000-100,000 mi

Symptoms: harsh or delayed shifts, transmission stuck in gear, check engine light with transmission codes, limp mode activation

Fix: The ZF 6-speed auto develops solenoid failures, often multiple at once. Requires transmission pan removal and solenoid replacement. 6-10 hours labor. Often discovered after cooler failure has been addressed.

Estimated cost: $1,800-3,500

Typical onset: 50,000-90,000 mi

Symptoms: clunking when shifting from park to drive, excessive vibration at idle, drivetrain lurch during acceleration, visible sagging of transmission tail

Fix: Hydraulic transmission mounts fail and allow excessive movement. Relatively straightforward replacement but requires proper support of transmission. 3-5 hours labor.

Estimated cost: $800-1,400

Symptoms: hesitation or stumbling under acceleration, rough idle, loss of power at highway speeds, difficulty starting when hot

Fix: In-tank fuel filter and external filter both clog earlier than expected, especially with ethanol fuel. Tank must be dropped for main filter. 4-6 hours labor for both filters.

Estimated cost: $600-1,200

Typical onset: 70,000-110,000 mi

Symptoms: white smoke from exhaust, coolant loss with no visible leaks, overheating, rough idle or misfires, milky oil

Fix: V8 develops head gasket leaks, sometimes both banks. Engine-out service recommended for proper access. 35-45 hours labor. Often discovered during diagnosis of overheating or when owners ignore coolant loss.

Estimated cost: $8,000-14,000