The second-generation X5 established itself as the benchmark luxury diesel SUV in Europe. The inline-6 diesel engine (M57 in pre-LCI, N57 in LCI models) is fundamentally strong and capable of exceeding 300,000 km with proper maintenance. However, the surrounding systems demand attention: the xDrive transfer case, DPF, EGR, swirl flaps (M57), and optional air suspension all have documented failure modes that can result in significant repair bills. One naming point matters when reading adverts: BMW launched the 235 PS car as the X5 3.0d in 2007 and only introduced the xDrive30d name in autumn 2008, so early E70s of this engine are advertised under both labels.· more· less
Robust inline-6 diesel engineStrong towing and motorway capability
Transfer case and xDrive repairsNumerous age-related gasket leaks
Buy if: You want a capable diesel SUV for long-distance use and can find one with complete BMW specialist service history and recently replaced wear items.
Avoid if: You primarily drive short urban trips (DPF clogging), cannot verify transfer case service history, or want low-maintenance ownership.
Transfer case (ATC700) actuator and clutch pack failure
€800 - 3,5001 of 10
Plastic actuator gear wears out; clutch pack degrades from mismatched tires or old fluid · more· less
The ATC700 transfer case in the E70 X5 uses a small plastic actuator gear that wears out over time, causing shuddering, jerking when turning, and drivetrain warning messages. The clutch pack inside also degrades, especially if tires are mismatched or the transfer case fluid has never been changed. A simple actuator gear replacement can be done for around 800-1,200 euros at an independent specialist. However, if the internal clutch pack is damaged, a full transfer case rebuild or replacement runs 2,500-3,500 euros. Preventive maintenance includes changing the transfer case fluid every 60,000 km and always running matched tires on all four wheels.
DPF clogging and regeneration failure
€1,500 - 4,0002 of 10
Diesel particulate filter blocks from short trips, causing limp mode and check engine light · more· less
The DPF in the E70 xDrive30d requires sustained driving above 60 km/h for active regeneration to burn off accumulated soot. Cars used predominantly for short urban trips will eventually clog the DPF. Symptoms include loss of power, limp mode, and the check engine light. A DPF cleaning service costs around 400-800 euros. If the filter is beyond saving, replacement costs 1,500-4,000 euros depending on whether an OEM or aftermarket unit is used. The OEM DPF from BMW is expensive (around 3,000-4,000 euros) and sometimes has long lead times. Regular motorway driving of 30+ minutes at least once a week significantly reduces the risk.
Swirl flap failure (M57 pre-LCI models)
€500 - 5,0003 of 10
Intake manifold swirl flaps can break and fall into engine, causing catastrophic damage · more· less
Pre-LCI models (2007-2009) with the M57 engine have 33mm swirl flaps in the intake manifold that can fracture over time. If the broken flap falls into the cylinders, it causes catastrophic damage to pistons, valves, and cylinder walls, potentially destroying the engine. BMW addressed this on later production runs, but early M57N2 engines remain at risk. Preventive removal with blanking plugs costs 300-500 euros and is strongly recommended. If the engine is damaged, repair costs can reach 5,000 euros or more for a rebuild. Check whether swirl flaps have already been removed or replaced with blanking plugs. This issue does not affect LCI models with the N57 engine.
EGR valve and cooler failure
€600 - 1,8004 of 10
EGR valve sticks from carbon buildup, cooler can crack causing coolant loss · more· less
The exhaust gas recirculation valve is prone to carbon buildup, especially on cars that mostly do city driving. A stuck EGR valve causes rough idle, loss of power, and increased emissions. The EGR cooler can also develop internal cracks, allowing coolant to enter the exhaust system. EGR valve replacement alone costs around 600-900 euros. If the cooler also needs replacement, total costs reach 1,200-1,800 euros at an independent specialist. EGR cleaning can extend the component's life but is not a permanent solution. Regular Italian-tune-up driving (sustained high-RPM motorway runs) helps prevent buildup.
Oil filter housing gasket leak
€400 - 1,0005 of 10
Gasket hardens with age and heat, leaking oil onto the serpentine belt and engine components · more· less
This is one of the most common issues on E70 X5 diesel engines. The oil filter housing gasket hardens over time due to heat exposure and begins leaking. If ignored, oil can drip onto the serpentine belt, causing it to slip off pulleys and potentially get pulled into the front main seal. This turns a simple gasket replacement into a much more expensive repair. The gasket itself costs under 30 euros, but labor is 2-4 hours due to accessibility. Total repair cost at an independent shop is typically 400-600 euros, or 700-1,000 euros at a BMW dealer. On cars over 10 years old, this leak should be considered expected.
Rear air suspension spring/compressor failure
€800 - 2,5006 of 10
Air springs develop leaks after 8-12 years; compressor burns out from overworking · more· less
E70 X5 models equipped with rear air suspension (not all have it - check the options) will eventually experience air spring leaks or compressor failure. The rubber bellows develop cracks from age and UV exposure, causing the rear to sag overnight or when parked for extended periods. The compressor then works overtime to compensate, eventually burning out. Aftermarket air springs cost around 150-300 euros per side. A new compressor costs 400-700 euros. Total replacement of both springs and compressor runs 800-1,500 euros at an independent specialist, or up to 2,500 euros at a BMW dealer. Some owners convert to conventional coil springs for around 600-800 euros to eliminate the issue permanently.
Timing chain stretch (N57 LCI models)
€2,000 - 4,0007 of 10
Rear-mounted timing chain can stretch on high-mileage N57 engines, requiring engine-out repair · more· less
The N57 engine in LCI models (2010-2013) has its timing chain at the rear of the engine, which means the transmission must be removed for replacement. While the failure rate is lower than the infamous N47, timing chain stretch does occur, particularly on cars exceeding 200,000 km with poor oil change history. Symptoms include a rattle from the rear of the engine on cold start and rough idle. The repair itself costs 2,000-2,500 euros at an independent specialist or 3,000-4,000 euros at a BMW dealer, due to the extensive labor involved. The M57 engine in pre-LCI models has its timing chain at the front, making it cheaper and easier to replace, but failures are also less common.
Turbocharger failure or actuator wear
€1,500 - 3,5008 of 10
Turbo actuator sticks or turbo bearings wear, causing loss of power and smoke · more· less
The turbocharger on both M57 and N57 engines can fail due to actuator wear, bearing degradation, or oil seal failure. Symptoms include loss of boost, excessive exhaust smoke, and whining noises from the turbo. The actuator alone can sometimes be repaired for 400-600 euros. However, if the turbo itself needs replacement, costs are 1,500-2,500 euros at an independent specialist using a remanufactured unit, or up to 3,500 euros with a new OEM turbo at a BMW dealer. The M57 twin-turbo models (3.0sd/xDrive35d) are more expensive to repair. Ensuring regular oil changes with correct specification oil and allowing the turbo to cool down before switching off after hard driving helps prolong turbo life.
Tailgate light seal failure and water ingress
€200 - 8009 of 10
Butyl tape seal degrades, allowing water into tail light housings and corroding electronics · more· less
The rear lights mounted on the tailgate use a butyl tape seal that fails over time, allowing water to enter the light housing. This corrodes the LED circuit board, causing individual LEDs or the entire light to stop working. BMW acknowledged the issue and released updated rubber gaskets (part numbers 63 21 7 288 973 and 63 21 7 288 974) but did not issue a formal recall. The updated seals cost around 20-30 euros and can be installed in about an hour. If the light unit itself is damaged by water corrosion, a new tail light assembly costs 300-600 euros. This is a nearly universal issue on pre-2010 E70s that have not had the seal updated.
Coolant pump and thermostat wear
€600 - 1,20010 of 10
The mechanical coolant pump and its thermostat wear with age, with overheating as the end point · more· less
Both engines in this report drive the main coolant pump mechanically off the engine, not electrically: the pre-LCI M57 and the LCI N57 both use a belt-driven pump, so the sudden electric-pump failures and the preventive electric-pump change at 100,000 km often quoted for the E70 belong to the petrol cars. What does happen here is ordinary wear: the pump bearing and seal weep, the thermostat sticks, and coolant loss or a stuck-open thermostat shows up as slow warm-up, temperature swings, or overheating in traffic. Replacing the pump together with the thermostat, which is the sensible way to do it, costs 600-800 euros at an independent shop or 900-1,200 euros at a BMW dealer, with the pump itself around 250-400 euros as a part. The car also has separate small auxiliary electric pumps, for example for the turbo and heater circuits, and those can fail on their own without affecting main engine cooling.
Strong diesel engine, but age and complexity drive repair costs
The M57 and N57 inline-6 diesel engines are fundamentally robust and can reach very high mileage. However, the E70 X5 is a complex vehicle with air suspension, xDrive, and multiple emission control systems that all require attention as the car ages. Transfer case maintenance is critical and often overlooked. Most E70 X5s on the market are now 12-18 years old, meaning rubber seals, gaskets, and electronic components are at the end of their natural lifespan. A well-maintained example with documented service history can still be a rewarding ownership proposition, but budget accordingly for predictable age-related repairs.
Service history
Complete BMW dealer or specialist records essential. Verify oil change intervals (should be every 15,000 km or annually, not BMW's longer recommendation).
Cold start
Start the engine completely cold. Listen for timing chain rattle (N57 LCI) or rough idle.
Test drive
Minimum 30 minutes including motorway speeds. Check for drivetrain shudder, smoke, and warning lights.
Tire condition
All four tires must be the same brand, size, and similar tread depth. Mismatched tires destroy the transfer case.
Specific for this vehicle
Check for transfer case judder when turning
Drive slowly in a tight circle. Shuddering or binding indicates transfer case clutch pack wear. This is a potentially expensive repair.
Inspect oil filter housing for leaks
Look for oil seepage around the oil filter housing area. Wet or oily residue indicates the gasket needs replacement. Check if oil has reached the serpentine belt.
Check tailgate light operation
Verify all LEDs in both tailgate-mounted lights work. Look for condensation inside the housings. Ask if the updated rubber seals have been fitted.
+ 5 more checksShow less
Test rear suspension level (if air-equipped)
Park on level ground and check if the car sits level. Leave it parked for 30 minutes and check again. If the rear drops, the air springs are leaking.
DPF regeneration status
Ask to see the DPF soot loading level via a diagnostic tool. High soot loading indicates the car has been used for too many short trips.
Verify swirl flap status (M57 pre-LCI)
On 2007-2009 models, ask whether the swirl flaps have been removed or blanked. If they are original, budget for preventive removal.
Check EGR operation
Look for rough idle, excessive black smoke on acceleration, or reduced power. These indicate EGR valve carbon buildup.
Scan for fault codes
Use a BMW-specific diagnostic tool (ISTA or similar) to scan all modules. Pay attention to drivetrain, DPF, and emissions-related codes.
Recalls and Technical Service Bulletins
Takata airbag inflator (2007-2013 models, driver and passenger)Critical - verify completed with VIN
Fuel filter heater - European campaign for diesel modelsVerify completed
Accessory drive idler pulley securing bolt - December 2012 campaign for E70 3.0 diesel modelsVerify completed
EGR cooler technical campaign, applicable to European six-cylinder diesels produced from July 2012Verify completed
Contact BMW with the VIN to verify all recalls have been completed. The Takata airbag recall is particularly important as it affects all E70 X5 models and BMW has issued multiple rounds of it. Do not drive the car if the Takata recall has not been completed. The campaigns below are often listed for this car but belong elsewhere: the coolant pump connector action covered petrol-engined X5s, and the crankcase ventilation heater action covered petrol N51/N52 engines outside Europe. The European diesel equivalent is the fuel filter heater campaign above.
Warranty Status
Factory warranty (2 years)Expired on all E70 models
Rust perforation warranty (12 years)Expired on 2007-2013 models
Extended warranty optionsLimited third-party options for cars this age
All E70 X5 models are well outside their original 2-year factory warranty. Third-party extended warranties for cars of this age typically exclude pre-existing conditions and have high deductibles. Budget for repairs out of pocket.
Sources: Research draws on model-specific owner forums and owner communities, recall information from official authorities, German automotive press, and multiple workshop cost references cross-checked against each other.
This report is for informational purposes only and does not constitute professional advice. Estimates may be inaccurate. Always have a qualified specialist inspect the vehicle before purchase. We accept no liability for decisions made based on this information.
