2018 Bmw M5 Specs – The Comprehensive Performance And Maintenance
The 2018 BMW M5 represents a massive leap for the M division, introducing the first-ever M xDrive all-wheel-drive system in a sedan. This powerhouse combines a 600-horsepower twin-turbo V8 with sophisticated electronics to deliver a 0-60 mph time of just 3.2 seconds.
You want a car that can dominate a race track on Saturday and comfortably drive the family to brunch on Sunday. Many performance enthusiasts worry that adding all-wheel drive ruins the purity of a sports sedan.
The F90 generation M5 proves those doubters wrong by offering a switchable drivetrain that keeps the fun alive. This guide will walk you through the technical details, maintenance requirements, and performance potential of this legendary machine.
Whether you are a potential buyer or a current owner looking to do your own oil changes, understanding the 2018 bmw m5 specs is crucial for getting the most out of your vehicle. Let’s dive into the mechanical heart of this Bavarian beast.
A Deep Dive Into the 2018 bmw m5 specs
The 2018 model year introduced the F90 chassis, which was a significant departure from the previous F10 generation. Engineers focused on weight reduction and power delivery to ensure the car felt more agile than its predecessor.
Despite adding a complex all-wheel-drive system, the 2018 M5 actually weighs less than the outgoing model. This was achieved through the extensive use of carbon fiber reinforced plastic (CFRP) and aluminum in the body and chassis.
When you look at the 2018 bmw m5 specs, the most striking feature is the versatility of the drivetrain. You can toggle between 4WD, 4WD Sport, and a pure 2WD mode for traditional rear-wheel-drive drifting action.
The S63B44T4 Engine Architecture
At the core of the M5 is the 4.4-liter V8 engine featuring M TwinPower Turbo technology. This engine uses a “hot vee” configuration, where the turbochargers sit inside the V-shape of the cylinder banks.
This design shortens the path for exhaust gases, which significantly reduces turbo lag and improves throttle response. The engine produces a staggering 600 horsepower and 553 lb-ft of torque across a wide power band.
For the DIY mechanic, this engine is a masterpiece of packaging but requires precision. The cooling system is particularly complex, featuring multiple radiators and electric water pumps to keep the charge air coolers at optimal temperatures.
Transmission and M xDrive Mechanics
BMW swapped the previous dual-clutch transmission for a specifically tuned 8-speed M Steptronic automatic. This ZF-sourced gearbox provides lightning-fast shifts while being robust enough to handle the massive torque of the V8.
The M xDrive system is the star of the show, utilizing a central transfer case with a multi-plate clutch. This allows the car to distribute torque infinitely between the front and rear axles based on traction needs.
The Active M Differential at the rear axle further refines this by controlling the lock between the left and right wheels. This combination ensures that every bit of power translates into forward momentum, regardless of the weather.
Performance Benchmarks and Real-World Speed
On paper, the 2018 bmw m5 specs are impressive, but they translate into even more shocking real-world performance. The car officially clocks a 3.2-second 0-60 mph sprint, though many independent tests have seen it dip into the 2.8-second range.
The top speed is electronically limited to 155 mph by default. However, if your car is equipped with the M Driver’s Package, that limit increases to a blistering 189 mph.
Braking performance is equally vital for a car that weighs nearly 4,400 pounds. The standard M compound brakes feature 6-piston fixed calipers at the front, providing immense stopping power and fade resistance during spirited driving.
Suspension and Handling Dynamics
The F90 M5 uses an M-specific Variable Damper Control (VDC) system. You can choose between Comfort, Sport, and Sport Plus modes to adjust the stiffness of the ride.
Engineers redesigned the front double-wishbone and rear five-link suspension to handle the added stress of the AWD system. They used stiffer anti-roll bars and firmer rubber mounts to enhance steering precision.
The electromechanical M Servotronic steering offers adjustable weight. While some purists miss hydraulic setups, this system provides excellent feedback and makes the large sedan feel much smaller than it actually is.
Wheel and Tire Fitment
Standard models come with 19-inch M light-alloy wheels, but most owners opt for the 20-inch Style 706M wheels. These wheels are staggered, meaning the rears are wider than the fronts to maximize grip.
The factory tire setup usually features Michelin Pilot Sport 4S tires, specifically developed for BMW M. These tires use a bespoke rubber compound identified by a “star” mark on the sidewall.
If you are replacing tires, always look for the BMW-star rated versions. These are engineered to work specifically with the M xDrive system to prevent damage to the transfer case.
Essential Maintenance for the DIY Mechanic
Owning an M5 requires a proactive approach to maintenance. While BMW offers “Condition Based Service,” experienced owners know that shorter intervals are better for the longevity of a high-performance engine.
Change your engine oil every 5,000 to 7,500 miles rather than the 10,000+ miles the computer suggests. Use a high-quality 0W-30 or 5W-30 synthetic oil that meets the BMW Longlife-01 FE specification.
Always replace the oil filter with an OEM unit during every oil change. Accessing the oil filter housing requires removing the underbody shielding, which is held on by several 8mm and 10mm bolts.
Spark Plug and Ignition Coil Service
The high-strung S63 engine is sensitive to spark plug health. BMW recommends replacement every 30,000 miles, especially if you have increased the boost with an aftermarket tune.
Accessing the rear spark plugs can be a challenge due to the tight engine bay. You will need a thin-walled 14mm 12-point spark plug socket and a variety of extensions and swivels.
Check your ignition coils for signs of heat stress or cracking while you are in there. Replacing them as a set can prevent annoying misfires under heavy acceleration later on.
Cooling System Vigilance
The 2018 M5 has two separate cooling circuits: one for the engine and one for the intercoolers. Both systems have their own expansion tanks and electric pumps.
A common issue involves the primary coolant expansion tank developing small leaks at the seams. If left unchecked, coolant can spray onto the fuel injectors and wiring harness, leading to expensive repairs.
Inspect the tank for white crusty residue around the seams every time you open the hood. Replacing the tank is a straightforward DIY job that can save you thousands of dollars in potential engine damage.
Interior Technology and Driver Assistance
The 2018 M5 isn’t just about raw speed; it also features one of the most advanced interiors of its time. The M multifunction seats offer 20-way adjustment and include illuminated M5 logos in the headrests.
The iDrive 6.0 system remains highly intuitive, featuring a 10.25-inch touchscreen and gesture control. You can also use the classic rotary controller for easier navigation while driving at high speeds.
The Head-Up Display (HUD) is M-specific, showing a digital tachometer and shift lights directly in your line of sight. This allows you to keep your eyes on the road during high-speed maneuvers.
Customizing the Drive Modes
One of the best features of the M5 is the pair of red “M1” and “M2” buttons on the steering wheel. These allow you to save two completely different vehicle profiles.
You can program M1 for a comfortable daily commute with soft suspension and quiet exhaust. Then, program M2 for maximum performance with 2WD mode, stiff suspension, and aggressive shifting.
Switching between these modes happens instantly with a double-click of the button. This level of customization is a hallmark of the 2018 bmw m5 specs and user experience.
Common Problems and Reliability Concerns
While the F90 is generally more reliable than previous M5 generations, it is not without its quirks. High oil consumption is a common trait of the S63 engine, so check your levels frequently.
The transfer case in the M xDrive system can be sensitive to tire diameter differences. Ensure your front and rear tires have nearly identical tread depths to avoid “shuddering” during low-speed turns.
Brake squeal is another common complaint with the standard compound brakes. This is often a result of the high-performance pads and can sometimes be mitigated by performing a proper bedding-in procedure.
Fuel System and Injector Issues
The high-pressure fuel pumps (HPFP) can occasionally fail, leading to a “Drivetrain Malfunction” warning on the dash. If you notice a loss of power or rough idling, have the fuel pressure tested immediately.
Using top-tier 93 octane fuel is mandatory for this engine. Lower octane fuels can cause pre-detonation, which the knock sensors will try to correct by pulling timing, but this reduces performance and efficiency.
If you plan on tuning the car, consider upgrading the fuel injectors. The stock units are robust, but they can reach their flow limits quickly when you start pushing for more than 700 horsepower.
Frequently Asked Questions About 2018 bmw m5 specs
What is the fuel economy for the 2018 BMW M5?
The EPA rates the 2018 M5 at 15 mpg in the city and 21 mpg on the highway. However, if you frequently use the 600 horsepower available, expect those numbers to drop significantly into the low teens.
Can the 2018 M5 be converted to rear-wheel drive only?
Yes, the M xDrive system includes a dedicated 2WD mode. This mode disconnects the front axle entirely and disables stability control, allowing for traditional rear-wheel-drive handling characteristics.
What is the 0-60 time for the 2018 BMW M5?
The official 0-60 mph time for the 2018 bmw m5 specs is 3.2 seconds. Thanks to the M xDrive system’s launch control, this performance is very repeatable even on unprepared road surfaces.
Does the 2018 BMW M5 have a manual transmission option?
No, the F90 generation M5 was the first to completely ditch the manual transmission option. The 8-speed M Steptronic automatic is the only gearbox available, chosen for its ability to handle the engine’s high torque.
Final Thoughts on the F90 M5
The 2018 BMW M5 is a masterclass in automotive engineering. It successfully bridges the gap between a luxury cruiser and a legitimate supercar, providing a level of confidence that few other sedans can match.
By understanding the 2018 bmw m5 specs, you can better appreciate the complexity and capability of this vehicle. Whether you are performing your own maintenance or just enjoying a backroad sprint, the M5 remains a benchmark.
Keep a close eye on your fluids, invest in high-quality tires, and don’t be afraid to use the M2 button. This car was built to be driven hard, and with the right care, it will provide years of exhilarating performance.
Stay safe on the road and enjoy the incredible engineering of your BMW M5!
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