2018 BMW M5
Vehicle Specs & Maintenance Data
The 2018 BMW M5 maintenance specs on this page cover the key fluids, torque values, and wear items you need for routine service. Use these numbers as a quick reference when performing oil changes, tire rotations, brake jobs, and other scheduled maintenance on your BMW M5.
For oil changes, the 2018 BMW M5 takes 0W-40 Full Synthetic motor oil with a capacity of 9 quarts. Brake fluid type is DOT 4, the recommended coolant is BMW Coolant (Blue, phosphate-free), and transmission fluid is ZF Lifeguard 8 (ATF). Always use the manufacturer-recommended fluids to maintain warranty coverage and engine longevity.
When mounting wheels on the BMW M5, torque the lug nuts to 103 ft-lbs using a calibrated torque wrench. Over- or under-torquing can lead to warped brake rotors or loose wheels. Re-torque after 50 to 100 miles on newly installed wheels.
Owners of the 2018 BMW M5 have reported 5 common issues including "S63 Engine Oil Leaks", "ZF 8-Speed Transmission Overheating" and "Brake Wear and Rotor Warping". Scroll down to the Diagnostics tab for detailed descriptions, solutions, and estimated repair costs.
Specifications on this page are compiled from multiple publicly available sources including manufacturer documentation, NHTSA data, and automotive databases. Always cross-reference with your owner's manual or official factory documentation before purchasing parts or performing any service.
The 2018 BMW M5 uses 0W-40 Full Synthetic motor oil (9 qt capacity), requires lug nuts torqued to 103 ft-lbs, takes DOT 4 brake fluid.
Manufacturer-recommended maintenance schedule for the 2018 BMW M5. Always verify intervals against your owner's manual.
Enter a diagnostic trouble code to see causes, symptoms, and fixes for the 2018 BMW M5.
Common problems reported by 2018 BMW M5 owners, with recommended fixes and estimated repair costs.
S63 Engine Oil Leaks
The S63 4.4L twin-turbo V8 develops oil leaks from the valve cover gaskets, oil pan gasket, and turbocharger oil feed lines. The V8 engine's heat output accelerates gasket degradation, and leaks can drip onto hot exhaust components.
Replace the valve cover gaskets, oil pan gasket, and turbo oil lines as needed. The repair is labor-intensive due to the tight engine bay. Use updated gasket materials designed for higher temperatures.
Est. Cost: $1,200 - $3,500ZF 8-Speed Transmission Overheating
Under sustained high-performance driving (track use, aggressive highway driving), the ZF 8HP transmission can overheat, triggering a transmission temperature warning and entering a protection mode that limits power and shift speed.
Install an aftermarket transmission cooler for track or spirited driving. BMW offers a cooling system upgrade for some models. Frequent transmission fluid changes with ZF Lifeguard 8 help maintain cooling efficiency.
Est. Cost: $500 (cooler upgrade) - $3,000 (transmission service)Brake Wear and Rotor Warping
The M5's heavy weight and high performance cause accelerated brake wear, with front brakes lasting as few as 15,000-20,000 miles. Brake rotors are prone to warping under heavy use, causing pulsation during braking.
Replace brake pads and rotors as a set. Upgrading to BMW M carbon-ceramic brakes eliminates rotor warping but at significant cost. Aftermarket high-performance brake kits offer a middle ground between OEM and ceramic.
Est. Cost: $1,500 - $4,000 (iron brakes) or $15,000+ (ceramic)xDrive Transfer Case Actuator Issues
The M xDrive system's transfer case actuator can develop faults, preventing the system from properly distributing torque between axles. Warning lights appear and the system may default to AWD mode, disabling the rear-wheel-drive mode (2WD).
Replace the transfer case actuator motor and perform a software recalibration of the M xDrive system. Transfer case fluid should be changed simultaneously. Diagnostic scan identifies the specific fault codes.
Est. Cost: $1,000 - $2,500Turbocharger Wastegate Rattle
Both twin turbochargers can develop wastegate rattle, most noticeable on cold starts and during deceleration. The noise is a metallic clattering that diminishes as the engine warms up but worsens over time.
Replace the wastegate actuators on the affected turbocharger(s). In severe cases, the turbocharger assembly requires replacement. The S63 engine has two turbos mounted inside the V between the cylinder banks, making access difficult.
Est. Cost: $2,000 - $6,000