2010 MASERATI GRANTURISMO

Typical onset: 40,000-80,000 mi

Symptoms: metallic knocking from engine bay at idle, check engine light with low oil pressure codes, sudden catastrophic engine failure with metal shavings in oil, rough idle that worsens when warm

Fix: This is the GranTurismo's Achilles heel—undersized rod bearings in the F136 engine can spin and destroy the crank. Requires full engine-out teardown, crank machining or replacement, new bearings, and often pistons. 60-80 hours labor. Some owners opt for full short-block replacement or complete engine rebuild. Early detection via oil analysis is critical.

Estimated cost: $15,000-30,000

Typical onset: 50,000-90,000 mi

Symptoms: transmission fluid puddles under car, burnt transmission fluid smell, transmission overheating warnings, slipping shifts when hot

Fix: The external ZF transmission cooler lines and cooler itself develop leaks at fittings and seams. Cooler replacement requires dropping the transmission undertray and sometimes the front subframe for access. 4-6 hours labor. Must flush transmission system and refill with ZF-approved fluid.

Estimated cost: $1,200-2,200

Typical onset: 60,000-100,000 mi

Symptoms: harsh or delayed shifts, transmission slipping between gears, check engine light with transmission fault codes, car stuck in limp mode (3rd gear only), complete loss of forward gears

Fix: Shift solenoids and valve body electronics fail, often from heat or contaminated fluid. Requires transmission drop, valve body removal, and solenoid pack replacement. Some cases need complete valve body. 8-12 hours labor. Critical to use OEM or quality remanufactured parts.

Estimated cost: $2,500-5,500

Typical onset: 50,000-80,000 mi

Symptoms: clunking when shifting from park to drive, excessive vibration at idle in gear, loud bang when accelerating from stop, visible drivetrain movement when revving

Fix: Hydraulic transmission mounts collapse, causing driveline slop. Replacement requires lifting transmission slightly. 3-4 hours labor. Replace both mounts simultaneously as they wear together.

Estimated cost: $800-1,400

Typical onset: 60,000-90,000 mi

Symptoms: hesitation or stumbling under acceleration, hard starting when engine is hot, check engine light with fuel system lean codes, loss of power above 4,000 RPM

Fix: In-tank fuel filter clogs or high-pressure fuel pump weakens. Filter is inside the tank requiring tank drop. 4-6 hours labor. Often done with pump replacement preventatively. Use high-quality fuel to extend life.

Estimated cost: $1,200-2,500

Typical onset: 70,000-120,000 mi

Symptoms: external oil leaks along cylinder head mating surface, slight coolant loss with no visible leaks, white residue around head bolt areas, minor overheating under heavy load

Fix: Head gaskets can weep externally or allow minor coolant intrusion. Requires engine-out service for proper access on the V8. Both heads should be resurfaced and all gaskets/seals replaced. 50-60 hours labor. Often discovered during other major engine work.

Estimated cost: $8,000-14,000

Typical onset: 40,000-80,000 mi

Symptoms: oil seepage at front of valve covers, small oil spots on garage floor, burning oil smell after spirited driving, low oil level warnings between changes

Fix: Variable valve timing solenoid seals and camshaft variator seals leak. Requires valve cover removal and seal replacement. 4-6 hours labor per bank. Not urgent but can lead to oil starvation if ignored long-term.

Estimated cost: $1,000-1,800