BMW xDrive50i
The Technical Update resolved the worst problem of the first generation — away from piezo injectors, new piston rings, Valvetronic added. The character remained: a commanding V8 that is barely audible in Comfort mode and sends a powerful growl from afar in Sport. Hot-V heat soak remains by design — short oil change intervals (max. 7,000 km) are mandatory, not an optional extra.
V8 Evolution in the Boldest Wrapper
F16 with 450 hp — a big step up from the E71, TU engine considerably more stable. The sportiest SUV package of its era with real V8 sound. If the X6 concept appeals, this is the one to get.
Engine Weaknesses 5
The timing chain system remains the weak link in the TU as well. Plastic guide rails degrade. Preventive replacement from 120,000–150,000 km is advisable. Repair requires complete engine removal (~40 labour hours).
Symptoms: Rattling on cold start, engine warning light, in extreme cases loud clattering and engine failure
Despite revision, valve stem seals can wear at high mileage. Oil consumption of 0.5–1 L/5,000 km is reported by TU owners. Significantly better than the original N63, but not fully eliminated.
Symptoms: Slightly elevated oil consumption, occasional light blue smoke on cold start, oil level warning earlier than expected
Hot-V design remains structurally prone to oil carbon build-up in the turbo feed lines. Switching the engine off immediately after hard driving promotes deposits and premature turbo wear.
Symptoms: Power loss under load, occasional hissing or whining from the engine bay, rarely blue smoke after a motorway run
Coolant hoses and bleed lines around the turbochargers suffer from sustained heat. Cracks often develop under load and only leak at operating temperature, making diagnosis difficult.
Symptoms: Periodic coolant warning light, loss without visible puddle, occasional coolant smell after shutdown
Direct injection without intake valve flushing — carbon deposits on intake valves increase steadily with mileage. Regular walnut blasting is required.
Symptoms: Power loss at part throttle, rough idle, increased fuel consumption with the same driving style
Vehicle Weaknesses 8
Like the predecessor E71, the rear air suspension on the F16 frequently develops leaks. BMW revised the design but production faults in the air springs continued to be reported, requiring both springs to be replaced.
The electric parking brake actuators on the F16 fail from around 70,000–90,000 km. The brake can neither be engaged nor released — a known issue on BMW vehicles with electric parking brakes.
Identical juddering to the E71: transfer case multi-plate clutch slips when the VTG oil is not changed every 90,000 km. Often completely fixable with an early oil change; repair costs up to €6,000 for actual failure.
Despite revisions, the N63TU V8 continues to suffer from carbon deposits in the intake tract and seized injectors. Coolant losses, spark plug well damage and turbo hose abrasion were reported up to 50,000 km.
The electric parking brake actuator fails after 70,000–90,000 km. Parking brake won't engage automatically or won't release. The control unit can be repaired or replaced.
The AdBlue dosing system on F16 diesel engines is prone to failures of the pump, injector and heating element. AdBlue freezes particularly in cold conditions and with ageing batteries.
The xDrive transfer case on the F16 is sensitive to mismatched tyre rolling circumferences and multi-plate clutch wear. Juddering under hard acceleration, metallic clonking from the centre.
The electric tailgate on the F16 shows hydraulic strut or control unit failures from around 40,000–60,000 km. The tailgate no longer opens or closes automatically, which is very inconvenient in everyday use.
Reports & Tests
29 owner complaints filed with NHTSA (2014–2019). Most reported: Powertrain (5), Engine (4), Other (4).