2018 BMW M550 vs BMW M5: Full Specs Comparison & Performance Breakdown
When comparing the 2018 BMW M550 and M5, the debate centers on raw power versus refined performance—two icons of German engineering that deliver exceptional driving dynamics, albeit with distinct character. This detailed breakdown compares their specifications to help you choose the ultimate M-series machine.
Engine Power and Performance Metrics
The 2018 BMW M550 delivers a potent 523 horsepower from its twin-turbocharged 4.4-liter V8, paired with a 8-speed automatic transmission, enabling a 0-60 mph time of around 3.9 seconds. In contrast, the M5 features a more balanced 523-horsepower twin-turbo 4.4L V8 but integrates a 8-speed ZF automatic with sport-tuned shifts, offering a slightly quicker 0-60 mph (3.8 seconds) thanks to refined weight distribution and advanced traction control.
Handling and Dynamic Characteristics
Both models boast sharp handling, but the M550 prioritizes track-ready agility with a lower center of gravity and adaptive dampers tuned for precision. The M5 emphasizes comfort without sacrificing sportiness, blending dynamic performance with enhanced interior isolation—ideal for daily driving while still delivering exhilarating cornering on twisty roads.
Interior Luxury and Technology
Interior quality excels in both models, but the M5 outshines with premium materials, intuitive iDrive 7 system, and extensive connectivity features. The M550 offers solid luxury but leans more toward driver focus, making it the preferred choice for purists seeking raw power with understated elegance.
Ultimately, the 2018 BMW M550 and M5 represent different philosophies within the M5 family—choose the M550 for uncompromising performance or the M5 for a masterclass in luxury and driving refinement. Make your decision today.
The addition of all-wheel drive to the BMW M5 is big news this year. Or is it? The hot-vee twin-turbo S63 V-8 that powers the M5 has motivated 550i xDrive models since 2011, albeit in a civilian. Comparing the M550 vs M5 interiors, the M550i xDrive is more luxurious and comfort.
I've seen people say, specifically for the m550 that 2018 and newer are your safest bets but that the engine can still be a maintenance queen. Idk about the m5 but it won't be as good of a daily as the m550. BMW M550i vs M5 Just got my M550iX, having traded my 2016 M4.
Thought about the M5, but it was very expensive. I believe the M550 is the best deal out there. It is really quick off the line, but very roomy and comfortable, with lots of luxury and convenience items.
M2,3,4,5 are absolute beasts, but they do not make the best DDs or tourers. I decided my need for the later, and the financial. Read our 2026 BMW 5-Series review for information on ratings, pricing, specs, and features, and see how this sedan performed in our testing.
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