Lot S-NE1593: 2017 BMW X5 M

The 2017 BMW X5 M is reasonably reliable for a high-performance SUV, but it comes with some important caveats.

The Good News About the S63 Engine: The X5 M’s 4.4L twin-turbo V8 (S63 engine) is actually considered more reliable than the standard N63 V8 found in regular X5s. Unlike the N63, which had major recall issues, the S63 received significant internal improvements. With proper maintenance, these engines can last well over 100,000 miles and beyond.

Key Maintenance Requirements:

• Walnut blasting (carbon cleaning on intake valves) every 30,000-50,000 miles — this is critical for direct-injection engines
• Spark plugs and ignition coils around 60,000 miles
• VANOS solenoids may need attention as mileage climbs
• Keep up with oil changes using the correct spec (the S63 can be sensitive to oil quality)

At Your Mileage (~84,000 miles): This vehicle is right in the typical BMW “service window” where deferred maintenance catches up. If walnut blasting hasn’t been done, it’s likely overdue. Budget for a pre-purchase inspection from a BMW specialist who can check for carbon buildup, turbo health, and drivetrain condition.

The Reality Check: This is a 567hp performance machine, not a Toyota Camry. While the S63 is robust for what it is, maintenance costs are significantly higher than a standard X5. Expect to pay more for:

• Premium fuel (required)
• Frequent brake jobs (heavy SUV with massive power)
• Specialized BMW M servicing

Bottom Line: The X5 M can be a reliable daily driver if you’re committed to proactive maintenance and have the budget for proper upkeep. Skip the maintenance, and you’ll face expensive repairs. At this mileage, check service records carefully — well-maintained examples are solid; neglected ones can be money pits.

Want to see what other F85 X5 Ms are out there? Check out similar vehicles on our market page. Can I help you find any others or answer questions about any specific concerns?