2017 ROLLS-ROYCE WRAITH

Typical onset: 40,000-80,000 mi

Symptoms: Misfires on cold start that clear after warmup, Excessive oil consumption (1qt per 1,000 mi or worse), Loss of compression on one or more cylinders, Catastrophic rod bearing failure or piston seizure if ignored

Fix: Direct-injection N74s suffer intake valve carbon that causes combustion pressure spikes, cracking piston ring lands. Rings collapse, oil floods cylinders, rods fail. Requires complete engine rebuild or short block replacement—65-85 hours labor for engine-out rebuild including machine work, new pistons, rings, bearings, gaskets, timing components, and coolant system refresh.

Estimated cost: $35,000-55,000

Typical onset: 50,000-90,000 mi

Symptoms: Transmission oil contaminated with coolant (strawberry milkshake fluid), Harsh or delayed shifts, Limp mode with trans fault codes, Coolant level drops without external leaks

Fix: Factory cooler inside the transmission housing develops pinhole leaks allowing coolant/ATF cross-contamination. Requires transmission removal, full teardown, cooler replacement, torque converter replacement, and complete fluid flush of both systems. 18-24 hours labor plus parts. Ignoring it destroys clutch packs and valve body within 500 miles.

Estimated cost: $8,500-14,000

Typical onset: 60,000-100,000 mi

Symptoms: Harsh 2-3 or 3-4 upshifts, Delayed engagement from Park to Drive, Transmission fault lights with shift solenoid codes, Limp mode limiting to 3rd gear

Fix: ZF 8HP mechatronic sleeve wears causing solenoid valve sticking. Requires transmission pan drop, mechatronic unit removal, solenoid bank replacement, adaptation programming. 8-12 hours labor. Can sometimes be temporarily improved with fluid/filter service but replacement inevitable.

Estimated cost: $3,500-5,500

Typical onset: 35,000-70,000 mi

Symptoms: Clunk on acceleration from stop, Vibration at idle in Drive, Visible fluid leaking from mount, Excessive driveline movement during throttle transitions

Fix: Hydraulic transmission mount weeps fluid and collapses. Requires subframe support, removal of exhaust sections for access. 4-6 hours labor. Common wear item but annoying on a six-figure car.

Estimated cost: $1,800-2,800

Typical onset: 50,000-90,000 mi

Symptoms: Slow coolant loss without visible external leaks, Sweet smell from engine bay, Slight misfire codes after long highway runs, Crusty residue on block between cylinder banks

Fix: N74 valley gaskets and head gaskets develop seepage between banks. Not always catastrophic but requires engine-out service to properly address—45-60 hours labor for both banks, includes timing chains, valley pan, all gaskets, coolant system. Often discovered during inspection for other issues.

Estimated cost: $18,000-28,000

Typical onset: 60,000-110,000 mi

Symptoms: Extended crank time before start, Rough idle with fuel trim faults, Loss of power under boost, Fuel odor in cabin or engine bay

Fix: Direct-injection pumps, filters, and injector seals fail from contamination or age. Fuel filter service every 30k miles critical but often skipped. High-pressure pump replacement requires intake manifold removal, 10-14 hours. Injector jobs run 12-18 hours for all twelve cylinders including decarbonization.

Estimated cost: $4,500-9,000