The 2013 750i with the N63 twin-turbo V8 is BMW's flagship sedan plagued by catastrophic engine reliability issues stemming from inherent design flaws in the early N63 generation. Most owners will face major engine work or replacement between 60,000-100,000 miles.
N63 Engine Failure - Piston Ring/Bore Scoring
Common · high severity
Typical onset: 60,000-100,000 mi
Symptoms: Excessive oil consumption (1+ qt per 1,000 mi), Blue smoke from exhaust on startup, Metallic rattling from engine bay, Misfires and rough idle, Check engine light with cylinder-specific misfire codes
Fix: N63 hot-V turbo design causes inadequate piston cooling, leading to ring land failure and cylinder wall scoring. Fix requires complete short block replacement or full rebuild with updated pistons, rings, bearings, and often cylinder honing or sleeving. 40-60 labor hours depending on auxiliary component condition. Many shops recommend full long-block replacement due to extent of tear-down required.
Estimated cost: $18,000-28,000
Turbocharger Failure
Common · high severity
Typical onset: 70,000-120,000 mi
Symptoms: Loss of power and boost, Loud whining or grinding noise under acceleration, Oil leaking into intake system, P0299 underboost codes, Burning oil smell
Fix: Hot-V turbo placement creates extreme heat stress on turbo seals and bearings. Often both turbos fail within 10,000-20,000 miles of each other. Replacement requires significant disassembly including intake manifold and cooling system work. 18-24 labor hours for both turbos with updated BMW-revised units.
Estimated cost: $7,000-10,000
Timing Chain and Guide Failure
Occasional · high severity
Typical onset: 80,000-130,000 mi
Symptoms: Cold start rattle lasting 5-10 seconds, Timing-related fault codes, Rough running at idle, Check engine light, Catastrophic failure results in bent valves
Fix: N63 timing chains stretch and guides wear prematurely. Job requires front engine disassembly including valve covers, VANOS units, chains, tensioners, and guides. If caught early before chain jumps, 22-28 labor hours. If valves are bent from chain failure, add cylinder head work pushing total to 45+ hours.
Estimated cost: $5,500-8,000
Valve Stem Seal Failure
Common · medium severity
Typical onset: 50,000-90,000 mi
Symptoms: Blue smoke on cold startup that clears after 30 seconds, Oil fouled spark plugs, Moderate oil consumption (1 qt per 2,000 mi), Carbon buildup on intake valves
Fix: Hot-V design cooks valve stem seals prematurely. Requires valve cover removal and specialized tools to replace seals without full head removal. Can be done with heads on vehicle using compressed air to hold valves. 14-18 labor hours. Often combined with carbon cleaning service.
Estimated cost: $3,500-5,000
Coolant Transfer Pipe Failure
Occasional · high severity
Typical onset: 60,000-100,000 mi
Symptoms: Coolant loss with no visible external leaks, Sweet smell in cabin, Overheating, White smoke from exhaust, Coolant in oil (milky dipstick)
Fix: Plastic coolant pipes integrated into valley of hot-V engine crack from heat cycling. Coolant leaks internally, potentially mixing with oil or entering combustion chambers. Requires major disassembly to access - intake manifold, injectors, coils all come off. 12-16 labor hours. Critical to catch before coolant contaminates bearings.
Estimated cost: $3,000-4,500
High-Pressure Fuel Pump (HPFP) Failure
Occasional · medium severity
Typical onset: 40,000-80,000 mi
Symptoms: Long cranking before start, Stumbling and hesitation under load, Limp mode activation, Fuel pressure fault codes, Metal shavings in fuel system if pump grenades
Fix: Direct injection HPFP fails from internal wear. When pump disintegrates, metal debris contaminates entire fuel system requiring injector replacement and line flushing. Pump replacement alone is 4-6 hours. If system contaminated, add injector replacement pushing to 12-16 hours total.
Estimated cost: $1,800-6,500
Transmission Cooler and Mount Failures
Common · medium severity
Typical onset: 70,000-110,000 mi
Symptoms: Transmission fluid leaks under vehicle, Harsh shifting or slipping, Clunking when shifting into gear, Vibration at idle in gear
Fix: ZF 8-speed transmission oil cooler develops leaks at crimped connections. Transmission mounts also fail from oil contamination and age. Cooler replacement requires dropping transmission or extensive undercar work, 6-8 hours. Motor and transmission mounts add another 4-6 hours if done simultaneously.
Estimated cost: $1,500-3,200
Owner tips
Check oil level every fuel fill-up - consumption over 1 qt per 1,500 mi means engine damage is already occurring
Keep meticulous service records - many of these failures were subject to BMW warranty extensions if caught in time
Budget $3,000-5,000 annually for post-warranty ownership - this is not an exaggeration for N63 engines
Consider pre-purchase inspection including borescope cylinder inspection and oil consumption test over 500+ miles
BMW released multiple N63 technical updates and improved parts - verify any prior engine work used revised components
Extended warranties are essentially mandatory - ensure engine internal coverage with no oil consumption exclusions
Avoid unless you have a $20k+ engine rebuild fund or verified proof of complete N63 engine replacement with updated generation components - this is BMW's most catastrophic modern engine design.
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.
Fitment notes: AGM battery required; located in trunk; register battery after replacement using diagnostic tool
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Every control module on the 2011-2015 BMW 750i — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
Active Steering Control (AFS)3.5 hr R&Rdealer / factory tool +1.0 hr▸ programming details
📍 Steering column, mid-section
🔧 BMW ISTA/P
⚠️ Active steering system; calibration and adaptation critical
⚠️ Controls power seat, heating, ventilation, massage; memory function
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
BMW of North America, LLC (BMW) is recalling certain 2013-2015 740i, 740Li, 740Lxi, 750i, 750xi, 750Li and 750Lxi and 2014 ActiveHybrid 7 vehicles. The affected vehicles may have received incorrect replacement left rear taillight assemblies. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 108, "Lamps, Reflective Devices, and Associated Equipment."
Consequence: Vehicles with the incorrect left rear lamp assemblies may be less conspicuous to other drivers, possibly increasing the risk of a crash.
Remedy: BMW will notify owners, and dealers will inspect the vehicles and replace any incorrect left rear taillight assemblies, free of charge. The recall began August 11, 2017. Owners may contact BMW customer service at 1-800-525-7417.
Performance
Horsepower
445hp
Torque
480lb-ft
0–60 mph
4.7sec
Quarter mile
13.2sec
Top speed
130mph
Fuel economy (EPA)
City
17mpg
Highway
24mpg
Combined
19mpg
Fuel
Premium Gasoline
Capability & size
Curb weight
4,640lb
EPA class
Large Cars
Wiper blades
F01 generation LCI (facelift). Same specifications as earlier F01 models.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2013 BMW 750i 4.4L V8 Twin-Turbo N63 and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.