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X5 F15
F15 • 2013–2018 • SAV
3
Engine Options
10
Known Issues
0
Critical Issues
68%
Reliability Score
68% – Average
Engines
N55B30 – 3.0L Turbo Petrol
X5 35i • 306 hp • 400 Nm
Displacement 3.0L
Layout I6
Fuel Petrol
Transmission 8-Speed Automatic (ZF 8HP)
Known Issues4 issues
medium
Charge Pipe Blow-Off Common (>35%)
Factory plastic charge pipe blows off under high boost, particularly in warm weather or spirited driving. Aftermarket aluminium replacement recommended.
Typical Mileage
40,000–80,000 km
Est. Repair Cost
€100–€250
DIY Friendly
✓ Yes
Sudden power lossBoost leak whistleLimp mode
high
Valve Cover / VANOS Gasket Leak Common (>35%)
Valve cover and VANOS solenoid gaskets seep oil over time. Oil can drip onto hot exhaust components causing burning smell and smoke.
Typical Mileage
60,000–120,000 km
Est. Repair Cost
€300–€700
DIY Friendly
✓ Yes
Burning oil smellVisible oil seepageSmoke from engine
high
Oil Filter Housing Gasket Leak Common (>35%)
Oil filter housing gasket deteriorates and leaks oil onto belts and other components.
Typical Mileage
60,000–100,000 km
Est. Repair Cost
€250–€400
DIY Friendly
✓ Yes
Oil leakBurning smellOil on engine
high
Electric Water Pump Failure Common (~30%)
Electric water pump fails causing overheating. Shared issue with other N-series inline-6 engines.
Typical Mileage
80,000–130,000 km
Est. Repair Cost
€400–€700
DIY Friendly
✓ Yes
OverheatingWarning lightNo heat from vents
N57D30 – 3.0L Diesel
X5 25d, X5 30d, X5 40d • 218–313 hp • 450–630 Nm
Displacement 3.0L
Layout I6
Fuel Diesel
Transmission 8-Speed Automatic (ZF 8HP)
Known Issues4 issues
medium
Turbo Boost Pipe Leak Common (~25%)
Aluminium boost pipes develop cracks at crimp joints, causing loss of boost pressure.
Typical Mileage
80,000–150,000 km
Est. Repair Cost
€200–€500
DIY Friendly
✓ Yes
Loss of boostWhistling noiseReduced power
medium
Oil Leak from Oil Pan Gasket Moderate (~20%)
Oil pan gasket seeps over time, causing oil drips.
Typical Mileage
100,000–180,000 km
Est. Repair Cost
€300–€600
DIY Friendly
✗ Specialist
Oil dripsOil stains under car
high
Injector Failure Moderate (~20%)
Fuel injectors develop faults causing misfires and rough running.
Typical Mileage
100,000–180,000 km
Est. Repair Cost
€500–€1,200
DIY Friendly
✗ Specialist
Rough runningMisfiresBlack smoke
high
EGR Cooler Failure Moderate (~20%)
EGR cooler can crack, leaking coolant into the exhaust system.
Typical Mileage
100,000–180,000 km
Est. Repair Cost
€600–€1,200
DIY Friendly
✗ Specialist
Coolant lossWhite smokeEGR codes
N63B44TU – 4.4L Twin-Turbo V8 Petrol (TU)
X5 50i • 450 hp • 650 Nm
Displacement 4.4L
Layout V8
Fuel Petrol
Transmission 8-Speed Automatic (ZF 8HP)
Known Issues1 issue
high
Oil & Coolant Leaks (Improved over original N63) Common (~30%)
The TU revision improved but didn't eliminate the hot-V leak issues. Expect gasket work at higher mileages.
Typical Mileage
80,000–140,000 km
Est. Repair Cost
€1,500–€3,500
DIY Friendly
✗ Specialist
Oil consumptionBurning smellCoolant loss
Common Issues (F15-specific)
Suspension 1
high
Air Suspension Compressor Failure Moderate (~25%)
Air suspension compressor fails due to moisture ingress or overwork.
Typical Mileage
80,000–150,000 km
Est. Repair Cost
€500–€1,200
Category
Suspension
Suspension warningSaggingCompressor runs constantly
Wear Items
N55B30 – Wear Items
X5 35i
Spark Plugs
Every 45,000 km
Replacement Cost€100–€180
Wear Factor60%
Ignition Coils
80,000–120,000 km
Replacement Cost€200–€400
Wear Factor50%
N57D30 – Wear Items
X5 25d, X5 30d, X5 40d
DPF
150,000–200,000 km
Replacement Cost€800–€2,500
Wear Factor40%
Glow Plugs
80,000–120,000 km
Replacement Cost€100–€250
Wear Factor50%
AdBlue System
Refill every 15,000 km; pump at ~150,000 km
Replacement Cost€200–€800
Wear Factor40%
N63B44TU – Wear Items
X5 50i
Spark Plugs & Ignition Coils
Every 50,000 km
Replacement Cost€400–€700
Wear Factor55%
All Variants
All Variants
Complete list of model variants for F15