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BMW F16 X6 common problems

2015–2019 · sDrive35i / xDrive35i, xDrive50i (N55, N63 V8). The known weak spots of the engines used in the F16, with sources, plus the topics that come up most in BMW's service bulletins and NHTSA recalls for this chassis.

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N55 engine

sDrive35i / xDrive35i (2015–2019) · N55 bulletins →

Oil filter housing gasket, valve cover and oil pan leaks

The N55's most common repairs are oil leaks at the filter housing gasket, the plastic valve cover and the oil pan gasket.

BMW bulletins on file for the F16:

N55 oil filter housing gasket (OFHG): prices → N55 valve cover / valve cover gasket (PCV): prices → N55 oil pan gasket: prices →

Electric water pump and thermostat

Like the N52 and N54, the N55 uses an electric coolant pump that eventually fails.

BMW bulletins on file for the F16:

N52 / N54 / N55 electric water pump + thermostat: prices →

Charge pipe cracks

The plastic charge pipe between turbo and intercooler can crack, causing a sudden loss of boost; it's a shared N55/S55 weak point.

Sources: Lang Racing: N55/S55 crank hub and boost notes

N63 engine

xDrive50i (2015–2019) · N63 bulletins →

Oil consumption and valve stem seals

BMW issued a dedicated N63/S63 valve seal replacement procedure for cars with verified excessive oil consumption, oil-fouled plugs or smoke.

BMW bulletins on file for the F16:

  • SIB 01 01 22 Oil consumption class-action settlement Oil consumption class-action settlement on BMW E60/F01/F02/F06 and other models (2009–2019); covers eligible repairs and reimbursement under the court settlement. Service bulletin · Jan 2026
  • SIB 11 01 13 N63 and N63T engine N63 and N63T engine on M57/N20/N52/N54/N55/N57/N62/N63/N74/S63 engines (2007–2018); BMW explains the cause and the approved repair. Service bulletin · Oct 2018
  • SIB 11 01 17 N63T and S63T engine N63T and S63T engine on N63 engines (2012–2017); the fix is replacing the affected part. Service bulletin · Nov 2017

N63 valve stem seals (oil burning / blue smoke): prices →

Sources: BMW SIB: N63 and S63 valve seal replacement (NHTSA)

N63 Customer Care Package (injectors, sensors, vacuum pump, seals)

For 2009–2014 N63 cars BMW created the Customer Care Package: a check and, if needed, replacement of air mass sensors, piezo injectors, the vacuum pump, turbo intake seals and crankcase vent lines. It's not a recall, so ask a BMW center whether it was done.

BMW bulletins on file for the F16:

Sources: BMW SIB 11 06 14: N63 Customer Care Package (NHTSA)

Turbo coolant lines, valve cover gaskets and timing chains

Hot-vee heat cooks the turbo coolant lines and valve cover gaskets; timing chain stretch is another known item.

BMW bulletins on file for the F16:

  • SIB 11 11 17 Timing chain leak Timing chain leak on BMW G11/G12/G30/G31 and other models (2008–2018); BMW gives diagnosis and repair guidance. Service bulletin · Sep 2018

N63 turbo coolant lines (coolant leak in the hot V): prices → N63 valve cover gaskets (both banks): prices →

Most frequent bulletin topics 180 bulletins

BMW service bulletins and warranty extensions filed with NHTSA that list the F16, grouped by topic. A bulletin tells technicians how to diagnose and fix a known issue; it doesn't mean every car has the problem.

NHTSA recalls by component 7

Matched from NHTSA's public recall file by model and model year. Recall repairs are free; check a VIN.

BMW warranty extensions that list the F16

If a car qualifies, the listed repair may be free. Check eligibility for the VIN with a BMW center.

Sources: BMW service bulletins and recalls filed with NHTSA (public data) and the specialist and owner write-ups linked above. Not affiliated with BMW.

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