Electronic Gremlins and TSBs

The vehicle has a high TSB count, suggesting potential for various minor electronic issues or diagnostic challenges. These can range from infotainment glitches to sensor malfunctions. Estimated repair cost: $100 - $1,500+.

Over time, plastic components in the cooling system, such as the coolant expansion tank or hoses, can become brittle and develop leaks. Estimated repair cost: $300 - $800.

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2017 BMW 640i Maintenance guide

Name: Maintenance dataset for 2017 BMW 640i
Creator: Carfocal

v1.0Updated Jul 4, 2026Ethan Miller4 Sources Analyzed1 Critical Recalls

MAINTENANCE SUMMARY

The 2017 BMW 640i, with an average reliability score of 6.5, presents a maintenance profile focused on its premium twin-scroll turbocharged inline-six engine and xDrive all-wheel-drive system. Owners should prioritize regular fluid changes and be aware of potential electronic gremlins suggested by its high TSB count.

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Reliability Score

Est. Annual Maintenance Cost

$800 - $1,500

TSBs & Recalls

88 TSBs | 1 Recalls

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Key Takeaways

Proactive maintenance is essential for this luxury performance sedan.
Regular fluid changes for engine oil, transmission, and coolant are critical.

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Critical service intervals

Common failure analysis

Symptoms and prevention guidance