The 2017 X5 xDrive35i with the N55 engine is generally reliable compared to earlier BMW platforms, but the ZF 8-speed transmission's cooling and mounting systems are known weak points, and higher-mileage examples can suffer catastrophic engine failures from oil starvation or bearing wear if maintenance was deferred.
Transmission Oil Cooler Failure
Common · high severity
Typical onset: 70,000-110,000 mi
Symptoms: transmission overheating warning, limp mode activation, fluid mixing between coolant and ATF causing pink/milky fluid, harsh shifting or slipping
Fix: Replace external transmission oil cooler and flush both coolant and ATF systems to prevent cross-contamination damage. Requires dropping transmission pan and replacing internal filter. Labor: 4-6 hours depending on access and whether trans needs removal for internal inspection.
Estimated cost: $1,200-2,200
Transmission Mount Collapse
Common · medium severity
Typical onset: 60,000-90,000 mi
Symptoms: clunk when shifting from Park to Drive or Reverse, vibration at idle in gear, excessive driveline movement felt during acceleration, visible transmission sag on inspection
Fix: Replace transmission mount assembly. The hydraulic mount deteriorates and leaks fluid, losing its damping ability. Labor: 2-3 hours with proper lift access.
Estimated cost: $450-750
N55 Rod Bearing Failure
Occasional · high severity
Typical onset: 80,000-140,000 mi
Symptoms: rod knock or bottom-end rattle at cold start or under load, metallic debris in oil during changes, low oil pressure warning, catastrophic failure with seized engine if ignored
Fix: Requires complete bottom-end rebuild or short block replacement. Remove engine, disassemble, replace all rod bearings, main bearings, and often crankshaft if journals are scored. Some shops do in-chassis bearing replacement but it's risky without full inspection. Labor: 25-35 hours for proper engine-out rebuild.
Estimated cost: $8,000-14,000
High-Pressure Fuel Pump (HPFP) Failure
Occasional · medium severity
Typical onset: 60,000-100,000 mi
Symptoms: long crank time before starting, rough idle and misfires under load, fuel system pressure fault codes (2E2F, 2E81), limp mode or no-start condition
Fix: Replace high-pressure fuel pump mounted on cylinder head and often the low-pressure fuel filter in the tank simultaneously as preventive measure. Labor: 3-4 hours for HPFP, add 2-3 hours if dropping tank for filter.
Estimated cost: $1,400-2,200
Valve Cover and Oil Filter Housing Gasket Leaks
Common · low severity
Typical onset: 50,000-80,000 mi
Symptoms: oil seepage visible on valve cover or front of engine, burning oil smell from exhaust manifold heat, oil droplets on garage floor, low oil warnings if leak progresses
Fix: Replace valve cover gasket and oil filter housing gasket as a set since labor overlaps. Valve cover on N55 includes integrated PCV system components. Labor: 4-5 hours for both jobs together.
Estimated cost: $900-1,500
Coolant Transfer Pipe and Thermostat Housing Leaks
Occasional · medium severity
Typical onset: 70,000-110,000 mi
Symptoms: coolant loss with no visible external leak, coolant odor in cabin, overheating in extreme cases, white residue around rear of engine or under intake manifold
Fix: Replace plastic coolant transfer pipes behind the engine and often the electronic thermostat housing simultaneously. Requires partial intake removal for access. Labor: 5-7 hours depending on which pipes are leaking.
Estimated cost: $1,200-2,000
Owner tips
Oil analysis every 5,000 miles after 60k to catch bearing wear early — iron and copper levels tell the story before you hear rod knock
Use BMW LL-01 approved full synthetic oil and don't extend intervals beyond 7,500 miles despite what the computer says
Inspect transmission fluid condition at every oil change after 50k miles — any discoloration means cooler may be leaking internally
Budget $1,500-2,000 annually for maintenance after 70k miles — these are not cheap to own but reward preventive care
Buy one with documented oil changes and transmission service under 80k miles; avoid high-mileage examples without proof of bearing inspection or budget for a potential engine rebuild.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
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ENGINE AND ENGINE COOLING:COOLING SYSTEM:PUMP · 24V608000
2024-08-13
BMW of North America, LLC. (BMW) is recalling certain 2012-2015 X1 sDrive28i, X1 xDrive28i, 2012-2016 Z4 sDrive28i, 528i, 528i xDrive, 328i, 328xi, 2016-2018 X5 xdrive 40e, 2014-2016 228i, 228xi, 428i, 428i xDrive, 328xi Gran Turismo, 2013-2017 X3 sDrive28i, X3 xDrive28i, 2015-2018 X4 xDrive28i, 2015-2016 428xi vehicles. An improperly sealed electrical connector on the water pump may be exposed to water and short circuit.
Consequence: An electrical short increases the risk of a fire.
Remedy: Dealers will inspect and replace the water pump and plug connector as necessary, and install a protective shield, free of charge. Owner notification letters were mailed on March 28, 2025. Owners may contact BMW customer service at 1-800-525-7417.
FUEL SYSTEM, DIESEL · 21V907000
2021-11-19
BMW of North America, LLC (BMW) is recalling certain 2013-2018 328d, 328d xDrive, 2014-2018 328d Sports Wagon, 328d xDrive Sports Wagon, 2014-2016 535d, 535d xDrive, 2015 740Ld xDrive, 2015-2017 X3 xDrive28d SAV, and 2014-2017 X5 xDrive35d SAV diesel vehicles equipped with an Exhaust Gas Recirculation (EGR) module with an integrated cooler. The EGR cooler may leak internally, causing coolant to mix with diesel engine soot, which could result in smoldering particles and a melting intake manifold.
Consequence: A melting intake manifold increases the risk of a fire.
Remedy: Dealers will replace the EGR cooler and inspect the intake manifold, replacing it as necessary, free of charge. This recall includes all vehicles previously recalled under 18V-755. Vehicles previously recalled under 18V-755 will need to have the new remedy performed for this recall. An interim owner notification letter was mailed on January 18, 2022. The remedy is expected to be available in June 2022. Owner notification letters were mailed on July 6, 2022. Owners may contact BMW customer service at 1-800-525-7417.
BMW of North America, LLC (BMW) is recalling certain 2014-2018 328d, 328d xDrive, X5 xDrive35d, 2014-2016 535d, 535d xDrive, 2015 740Ld xDrive, and 2015-2017 X3 xDrive28d vehicles. The high-pressure fuel pump may fail.
Consequence: Fuel pump failure can cause an engine stall while driving, increasing the risk of a crash.
Remedy: Dealers will replace the high-pressure fuel pump, free of charge. Owner notification letters were mailed on January 14, 2022. Owners may contact BMW customer service at 1-800-525-7417.
BMW of North America, LLC (BMW) is recalling certain 2013-2018 BMW 328d and 328d xDrive, 2014-2018 328d Sports Wagon and 328d xDrive Sports Wagon, 2014-2016 535d and 535d xDrive, 2015 740Ld xDrive, 2015-2017 X3 xDrive28d SAV and 2014-2017 X5 xDrive35d SAV vehicles equipped with an Exhaust Gas Recirculation (EGR) module with an integrated cooler. If the EGR cooler leaks internally, the coolant can mix with diesel engine soot. The high EGR temperatures may result in these particles possibly smoldering and melting the intake manifold.
Consequence: The melting intake manifold can increase the risk of a fire.
Remedy: BMW will notify owners, and dealers will inspect and replace the EGR cooler as necessary. If a leak has already occurred, the engine intake manifold will also be replaced. These repairs will be made free of charge. The recall began May 13, 2019. Owners may contact BMW customer service at 1-800-525-7417.
EQUIPMENT:OTHER:LABELS · 17V327000
2017-05-18
BMW North America, LLC (BMW) is recalling certain 2017 BMW X5 M and BMW X6 M vehicles. The vehicles are equipped with 21-inch tires, however the Tire Information Label states that the vehicles are equipped with 20-inch tires. As such, these vehicles fail to conform to Federal Motor Vehicle Safety Standard (FMVSS) number 110, "Tire Selection and Rims."
Consequence: The incorrect tire size on the label does not comply with FMVSS number 110.
Remedy: BMW has notified the affected owners and is providing them with a corrected tire information placard, free of charge. The recall began June 15, 2017. Owners may contact BMW customer service at 1-800-525-7417.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE · 17V189000
2017-03-17 · EA16003
BMW of North America, Inc. (BMW) is recalling certain 2017 X5 sDrive35i, X5 xDrive35i, X5 xDrive50i, X5 xDrive35d, and X5 xDrive40e vehicles. These vehicles are equipped with passenger frontal air bag modules using certain air bag inflators that may not vent properly in the event of a crash necessitating deployment of the passenger frontal air bag.
Consequence: If the inflator cannot vent properly, the inflator may rupture, resulting in metal fragments striking the vehicle occupants and causing serious injury or death.
Remedy: BMW has notified owners, and dealers will replace the air bag modules, free of charge. The recall began on March 20, 2017. Owners may contact BMW customer service at 1-800-525-7417.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.