What are the most common BMW 6 Series problems?
According to Au7o's analysis of 130+ owner reports, the 2018 BMW 6 Series has 4 documented issues. The most frequently reported are: N63TU1 650i Oil Consumption Requires BMW Diagnosis, N55 Electric Water Pump Failure (640i, F06/F12/F13), Convertible Top Hydraulic Pump & Cylinder Failure (E64/F12). Of these, 2 are rated critical and should be addressed promptly.
Is the BMW 6 Series reliable?
The 2018 BMW 6 Series has 4 known issues documented across 130+ owner reports. 2 issues are rated critical: N63TU1 650i Oil Consumption Requires BMW Diagnosis and N55 Electric Water Pump Failure (640i, F06/F12/F13). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common BMW 6 Series problems?
Repair costs for known BMW 6 Series issues range from $400 to $5,000, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2013-2018 BMW 6 Series N63TU1 650i Oil Consumption Requires BMW Diagnosis?
BMW SIB 01 01 22 identifies U.S.-specification F12 650i and 650i xDrive vehicles from model years 2013-2018 and F13 650i and 650i xDrive vehicles from model years 2013-2017 with the N63TU1 engine, subject to the production and class definitions in the bulletin. The settlement pat… Severity: high.
What is the 2012-2018 BMW 6 Series N55 Electric Water Pump Failure (640i, F06/F12/F13)?
The 2012-2018 640i uses the N55 inline-six with an electric main coolant pump that is a known wear item across every N55 application. On 6Post, 640i owners report failures around 60,000-100,000 miles: sudden high-temperature warnings, reduced-power mode, the pump running continuo… Repairs typically run $900-$3,300. Severity: high.
What is the 2004-2018 BMW 6 Series Convertible Top Hydraulic Pump & Cylinder Failure (E64/F12)?
E64 (2004-2010) and F12 (2012-2018) convertible models experience hydraulic top mechanism failures due to pump motor corrosion, seal degradation, and hydraulic cylinder leaks. The convertible top may stop mid-cycle, operate slowly, or refuse to open/close entirely. The hydraulic… Repairs typically run $600-$5,000. Severity: medium.
What is the 2012-2018 BMW 6 Series Adaptive Headlight Module and Stepper Motor Failure?
The adaptive (cornering) headlights on the 6 Series suffer from stepper motor and control module failures. The stepper motors that swivel the headlight beams left and right based on steering input wear out, causing the headlights to point in incorrect directions or not respond to… Repairs typically run $400-$1,200. Severity: low.
