2018 MCLAREN 570S

Typical onset: 30,000-60,000 mi

Symptoms: sudden loss of power under load, metallic knocking from engine bay, white/blue smoke from exhaust, check engine light with misfire codes, oil consumption over 1 qt per 1,000 mi

Fix: The M838TE suffers from piston ring flutter and bearing wear when driven hard or with delayed oil changes. Repair requires full engine-out service (12-18 hours labor), short block replacement or full rebuild with upgraded pistons and bearings. Many engines grenaded between 30k-50k miles when tracked without proper cool-down procedures or run on inadequate oil.

Estimated cost: $35,000-65,000

Typical onset: 25,000-50,000 mi

Symptoms: transmission overheating warnings on dash, harsh shifting or slipping in gears, transmission fluid leaking near rear of engine bay, limp mode activation after spirited driving

Fix: The SSG dual-clutch transmission oil cooler develops internal leaks or external seepage, leading to fluid loss and overheating. Requires removal of rear clamshell and undertray (6-9 hours labor). Cooler replacement is critical before clutch packs burn - many owners caught this too late and needed full transmission rebuilds.

Estimated cost: $4,500-7,500

Typical onset: 35,000-70,000 mi

Symptoms: clunking during acceleration or deceleration, vibration through cabin at idle, grinding feel during gear changes, visible movement of powertrain when revving in neutral

Fix: Hydraulic transmission mounts deteriorate from heat cycling and aggressive launches. Requires lift access and partial exhaust removal (4-6 hours labor). OEM mounts are mandatory - aftermarket versions fail quickly. Not addressing this accelerates wear on driveshafts and transmission components.

Estimated cost: $2,200-3,800

Typical onset: 40,000-80,000 mi

Symptoms: delayed or harsh gear engagement, failure to shift above 3rd or 4th gear, transmission fault codes P0750-P0760 range, lurching during low-speed maneuvering

Fix: The SSG solenoid body develops internal electrical faults or mechanical sticking. Diagnosis requires McLaren-specific scan tools (2 hours). Replacement involves draining transmission, removing valve body (8-11 hours total). Often discovered after ignoring minor shift quality issues for months.

Estimated cost: $5,500-8,500

Typical onset: 50,000-90,000 mi

Symptoms: persistent coolant loss without visible leaks, white exhaust smoke at startup, oil residue in coolant reservoir, overheating under load, misfire codes on multiple cylinders

Fix: The M838TE's aluminum block and heads are prone to gasket failure from repeated heat cycling, especially if coolant wasn't changed every 3 years. Requires engine removal or in-chassis work with significant disassembly (18-24 hours labor). Head machining often needed, adding cost. This job frequently uncovers additional issues like warped heads or corroded coolant passages.

Estimated cost: $12,000-18,000

Symptoms: rough idle and hesitation under acceleration, reduced power above 5,000 RPM, fuel system fault codes, extended cranking before start, complete no-start condition

Fix: The in-tank fuel filters and pumps are sensitive to fuel quality and ethanol content. Requires dropping rear undertray and fuel tank access (5-7 hours labor). McLaren officially recommends filter service every 36k miles but many owners on E10 fuel see issues by 25k. Preventable with quality fuel and earlier intervals.

Estimated cost: $2,800-4,200