2012 BMW 6 Series Problems: 6 Known Issues
2012 model year · 130+ owner reports · Updated October 2026
According to Au7o's analysis of 130+ owner reports, the 2012 BMW 6 Series has 6 documented known issues, with 4 rated critical. The most serious are Early N63 650i Timing-Chain Wear Check, In-Tank Fuel Pump Wire-Crimp Failure (Recall 16V-746, 2012 640i/650i) ($0-$0 repair), Turbocharger Auxiliary Water Pump Fire Risk (Recalls 12V-161 / 18V-248, 2012 650i) ($0-$600 repair) and N55 Electric Water Pump Failure (640i, F06/F12/F13) ($900-$3,300 repair). The most commonly reported issue is Adaptive Headlight Module and Stepper Motor Failure with 130 owner reports. Across all issues with published estimates, repair costs range from $400 to $5,000. DIY maintenance guides at au7o.io.
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All 6 Known Issues
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Frequently Asked Questions
What are the most common BMW 6 Series problems?
According to Au7o's analysis of 130+ owner reports, the 2012 BMW 6 Series has 6 documented issues. The most frequently reported are: Early N63 650i Timing-Chain Wear Check, In-Tank Fuel Pump Wire-Crimp Failure (Recall 16V-746, 2012 640i/650i), Turbocharger Auxiliary Water Pump Fire Risk (Recalls 12V-161 / 18V-248, 2012 650i). Of these, 4 are rated critical and should be addressed promptly.
Is the BMW 6 Series reliable?
The 2012 BMW 6 Series has 6 known issues documented across 130+ owner reports. 4 issues are rated critical: Early N63 650i Timing-Chain Wear Check and In-Tank Fuel Pump Wire-Crimp Failure (Recall 16V-746, 2012 640i/650i) and Turbocharger Auxiliary Water Pump Fire Risk (Recalls 12V-161 / 18V-248, 2012 650i) 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 $0 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 2012-2013 BMW 6 Series Early N63 650i Timing-Chain Wear Check?
BMW SIB 11 16 14 includes F12 6 Series convertibles with the N63 engine produced from March 2011 through July 2012 and F13 6 Series coupes with the N63 engine produced from July 2011 through July 2012. It defines an ISTA timing-chain elongation test; BMW states that the check and… Severity: high.
What is the 2012 BMW 6 Series In-Tank Fuel Pump Wire-Crimp Failure (Recall 16V-746, 2012 640i/650i)?
NHTSA campaign 16V-746 (October 2016) covers 2012 640i convertibles and 650i coupes and convertibles (plus 2007-2011 X5, 2008-2011 X6, 2010-2011 5 Series Gran Turismo and 2011-2012 5 Series). The low-pressure in-tank fuel pump's electrical connector pins were improperly crimped;… Repairs typically run $0-$0. Severity: high.
What is the 2012 BMW 6 Series Turbocharger Auxiliary Water Pump Fire Risk (Recalls 12V-161 / 18V-248, 2012 650i)?
The electric auxiliary coolant pump that circulates coolant through the turbochargers after shutdown on the N63 V8 has a circuit board prone to short-circuiting and overheating, which can smolder and cause an engine-compartment fire. BMW first recalled 2012 650i convertibles unde… Repairs typically run $0-$600. 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.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.