Au7o mascotAu7o
Known IssuesTest Hub demo
  1. Au7o
  2. /
  3. Known Issues
  4. /
  5. BMW
  6. /
  7. 8 Series
BMW · Known Issues

2022 BMW 8 Series Problems: 6 Known Issues

2022 model year · 345+ owner reports · Updated September 2026

Share:@au7o.io

2022 · All trims · All engines

Choose the year and equipment for your written issues and visual request.

No email neededHow interest is saved

Interest applies to the selected vehicle and configuration; it is not a reservation. Voting stores a first-party identifier for up to 180 days to prevent repeat votes. No account or email is needed. Clearing cookies or using another device may count separately. Privacy

Visual coming soon

Your interest helps us choose what to build next.

Visual Known Issues · Coming soon

$4.99/month plus taxes at launch · No payment today

Preview the XT6 example
Known IssuesMotorcycle IssuesDTC LookupDrivePricingAboutTermsPrivacyCookiesConsentData rightsCopyrightFeedback
Share:@au7o.io

Vehicle data and repair guidance on this site are compiled with AI assistance and may contain errors. Always verify with your service manual or a qualified mechanic.

Data protection representation

DataRep representative in the United KingdomDataRep representative in the European Union
Au7o · 2026
Built for DIY mechanics. Privacy-first.
Explore free Hub demo
Issue summary

According to Au7o's analysis of 345+ owner reports, the 2022 BMW 8 Series has 6 documented known issues, with 2 rated critical. The most serious are N63TU3 Valve Stem Seal Failure & Oil Consumption (M850i) ($3,500-$10,000 repair) and N63TU3 Timing Chain Guide Wear (M850i) ($4,000-$7,500 repair). The most commonly reported issue is N63/S63 V8 Oil Consumption in M850i with 140 owner reports. Across all issues with published estimates, repair costs range from $150 to $10,000. DIY maintenance guides at au7o.io.

In This Article

  • 8 Series Engine3
  • 8 Series Suspension2
  • 8 Series Other1
  • Recalls1
  • FAQ
Get Started
Back to top

In This Article

  • Engine3
  • Suspension2
  • Other1
  • Recalls1
  • FAQ

All 6 Known Issues

Filter:
ALL YEARS2025202420232022202120202019

When Issues Typically Appear

Premature Tire Wear (All 8 Series & M8)
9K-15K
Adaptive Suspension Damper Malfunction
60K-90K
N63TU3 Timing Chain Guide Wear (M850i)
80K-100K
025K50K75K100K mi

On the 2019-2024 BMW 8 Series N63TU3, the N63TU3 4.4L twin-turbo V8 in M850i models suffers from premature valve stem seal degradation caused by the hot-V turbo placement. Turbochargers mounted between the cylinder banks create extreme heat that accelerates valve stem seal hardening and failure, allowing oil to leak past valve guides into combustion chambers. Oil consumption of 1 quart per 1,000-2,000 miles is common. BMW issued TSB MC-10149960-9999 addressing this issue, and there is an N63 class action settlement for affected owners. The hot-V design, while beneficial for performance and packaging, creates a hostile thermal environment for seals and gaskets. Fouled spark plugs from oil contamination cause misfires and rough running. Bimmerpost consensus: monitor oil consumption closely and document for potential warranty or class action eligibility.

This issue also affects: BMW 5 Series, BMW 6 Series, BMW X7

Common Symptoms

  • Increased oil consumption (1+ quart per 1,000-2,000 miles)
  • Blue smoke from exhaust on startup or hard acceleration
  • Fouled spark plugs from oil contamination
  • Rough idle and misfires from oil-fouled plugs
  • Oil burning smell from exhaust
  • Low oil warnings between oil changes

How to Fix

Replace valve stem seals ($3,500-$10,000 due to labor-intensive hot-V access). Use OEM Victor Reinz seals for durability. Replace spark plugs (Bosch 12120037581) when performing seal replacement. AGA Tools N63 Valve Stem Seal Kit AGA-N63-VSK-K ($500-800) provides specialized tooling for this job. Check VIN eligibility for N63 class action settlement which may cover repair costs. PREVENTIVE: Use quality synthetic oil (BMW LL-01 spec), change every 5,000-7,500 miles, and monitor oil level every 500-1,000 miles on M850i models.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • Genuine BMW valve-seal repair kit 11340054492
    OEM11340039494Cross-ref11340054492

    Confirmed M850i valve-stem-seal replacement. Confirm VIN and completed oil-consumption/smoke diagnosis..

    BMW Parts Deal
  • Genuine BMW high-power spark plug 12120057704
    OEM12125A69D79Cross-ref12120057704

    Spark-plug renewal during the confirmed M850i valve-stem-seal repair. Confirm VIN and current supersession before ordering..

    BMW Parts Deal
  • AGA N63TU/S63TU valve-stem-seal tool kit AGA-N63TU-VST-K
    OEM83302450434Cross-refAGA-N63TU-VST-K

    Fitment: Professional tooling specifically described by AGA for N63TU and S63TU engines; cross-references BMW tool 83302450434 and SIB B110117.

    AGA Tools

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Typical repair cost:$3,500 - $10,000

Research This Issue

GoogleRedditYouTubeNHTSA
Community Reported
Medium ConfidenceVerifiedReviewed Aug 2026

On the 2019-2024 BMW 8 Series, the N63TU3 4.4L twin-turbo V8 in M850i models uses plastic timing chain guides that wear prematurely under the extreme heat and stress of the hot-V configuration. As the plastic guides wear, the timing chain develops slack, causing rattling on cold starts and eventually risking timing chain skip or failure. Chain skip causes piston-to-valve collision and catastrophic engine destruction ($15,000-$25,000 replacement). While the N63TU3 has improved guides over earlier N63 versions, the fundamental plastic guide material still degrades from heat cycling. Turner Motorsport offers a complete timing chain guide kit (11317594899KT) with all necessary components. Bimmerpost consensus: replace timing chain guides preventively at 80,000-100,000 miles on N63TU3 engines before catastrophic failure.

This issue also affects: BMW 1 Series, BMW 2 Series Active Tourer, BMW 3 Series

Common Symptoms

  • Rattling noise from engine on cold starts (sounds like marbles in a tin can)
  • Engine timing-related fault codes (P0016, P0017)
  • Loss of power and sluggish acceleration
  • Check engine light
  • Rough idle that improves after warm-up
  • Catastrophic engine failure if chain skips (no start, piston damage)

How to Fix

PREVENTIVE REPLACEMENT: Replace timing chain guides, tensioners, and chain at 80,000-100,000 miles ($4,000-$7,500). Turner Motorsport timing chain kit 11317594899KT includes all necessary components. Individual parts: chain guides 11147574373, 11317574397, 11317592850, 11317592877; chain 11317598263. If chain has already skipped: engine damage likely requires $15,000-$25,000 engine replacement. CRITICAL: If you hear cold-start rattling, do NOT drive - tow to shop immediately to prevent catastrophic engine failure.

Typical repair cost:$4,000 - $7,500

Research This Issue

GoogleRedditYouTubeNHTSA
Community Reported
Medium Confidence
Community reported
140 owners

On the 2019-2025 BMW 8 Series, the M850i equipped with the N63TU4 twin-turbo V8 carries forward the oil consumption tendencies of the N63 engine family, though the TU4 revision is improved over earlier versions. Oil consumption of 1 quart per 3,000-5,000 miles is still common and considered within BMW's specification. The hot-vee turbo design inherently stresses valve stem seals and turbo oil seals. High-performance driving significantly increases consumption rates.

This issue also affects: BMW 5 Series, BMW 6 Series, BMW X5

Common Symptoms

  • Oil level dropping between 5,000-mile service intervals
  • Oil level warning on dashboard
  • Slight blue tint to exhaust on cold startup
  • Oil odor from exhaust during spirited driving
  • Need to add oil between scheduled services
  • Increased consumption during track days or aggressive driving

How to Fix

BMW considers up to 1 quart per 1,200 miles as within specification for the N63 family. For excessive consumption beyond that, inspect turbo oil return lines for restriction (causes oil to push past turbo seals), check the crankcase ventilation system, and evaluate valve stem seal condition. The N63TU4 benefits from updated seals and coatings, so consumption rarely reaches the extreme levels of earlier N63 variants.

Typical repair cost:$500 - $5,000

Research This Issue

Based on 140 owner reports

GoogleRedditYouTubeNHTSA
Community Reported
High Confidence140 owner reportsLast reported by owners Mar 2026Reviewed Mar 2026
Community reported
95 owners

On the 2019-2025 BMW 8 Series, the 8 Series equipped with Adaptive M Suspension experiences electronic damper failures, particularly in the rear. The electronically controlled dampers use solenoid valves to adjust firmness in real-time, and these solenoids can fail from fluid contamination or electrical faults. When a damper fails, the system defaults to the stiffest setting on the affected corner, creating a noticeably harsh and uneven ride. The car may also display a suspension warning and disable sport/comfort mode switching.

Common Symptoms

  • Suspension malfunction warning on dashboard
  • Unable to switch between Comfort, Sport, and Sport+ suspension modes
  • One corner of the car feels significantly stiffer than others
  • Clunking noise from affected corner over bumps
  • Vehicle pulling to one side under braking due to uneven damping
  • Excessive body roll on one side during cornering

How to Fix

Replace the failed adaptive damper. BMW's diagnostic system can identify which specific damper has failed through the suspension control module fault memory. The damper must be coded to the vehicle after installation. Replace dampers in pairs (both fronts or both rears) if the vehicle has over 60,000 miles, as the remaining original damper is likely near end of life. Bilstein offers OE-equivalent adaptive dampers at lower cost than BMW parts.

Typical repair cost:$800 - $2,000

Research This Issue

Based on 95 owner reports

GoogleRedditYouTubeNHTSA
Community Reported
Medium Confidence95 owner reportsLast reported by owners Mar 2026Reviewed Mar 2026

On the 2019-2024 BMW 8 Series, all 8 Series and M8 models experience premature tire wear, particularly on the rear tires, due to aggressive factory alignment settings. The rear suspension uses approximately -2.0 degrees of negative camber from the factory, which causes rapid inner edge tire wear. Rear tires commonly need replacement at only 9,000-15,000 miles instead of the typical 25,000-40,000 miles for performance tires. The aggressive camber is set for handling performance but is excessive for street driving and dramatically shortens tire life. Reducing rear camber to approximately -1.5 degrees through a performance alignment ($150-300) significantly extends tire life while maintaining good handling characteristics for street use. Staggered tire setup (wider rear than front) means rear tires cannot be rotated to front, compounding the wear issue. M8 Competition with its even wider rear tires is most affected.

Common Symptoms

  • Rapid inner edge wear on rear tires
  • Rear tires worn out at 9,000-15,000 miles
  • Uneven tread depth across tire surface
  • Visible cord or wire showing on inner edge while outer tread looks new
  • Tire noise increasing as inner edge wears
  • Failed tire inspection due to inner edge wear

How to Fix

Get a performance alignment reducing rear camber from factory -2.0 degrees to -1.5 degrees ($150-$300 at alignment shop). This significantly extends rear tire life from 9,000-15,000 miles to 20,000-25,000 miles while maintaining good street handling. Rotate front tires side-to-side every 5,000 miles (staggered setup prevents front-to-rear rotation). Replace rear tires in pairs when worn. COST SAVINGS: Alignment adjustment ($150-300) saves $1,200-2,400 per year in premature tire replacement on expensive performance tires ($300-600 each).

Typical repair cost:$150 - $2,400

Research This Issue

GoogleRedditYouTubeNHTSA
Community Reported
Medium Confidence
Community reported
110 owners

On the 2019-2025 BMW 8 Series B58, the 840i with B58 inline-six turbo engine experiences coolant loss primarily from the plastic expansion tank cracking and the electric water pump connection failing. The expansion tank develops hairline cracks at the weld seams that are nearly invisible until significant coolant is lost. The high-performance demands of the 8 Series chassis put additional thermal stress on the cooling system compared to lighter BMW models.

This issue also affects: BMW 1 Series, BMW 2 Series, BMW 5 Series

Common Symptoms

  • Low coolant warning without visible puddle
  • Coolant level gradually dropping over weeks
  • White residue or staining on expansion tank seams
  • Sweet antifreeze odor from engine bay
  • Temperature gauge reading slightly above normal
  • Steam from engine bay in cold weather (coolant evaporating on hot surfaces)

How to Fix

Replace the coolant expansion tank with BMW's latest revision. Inspect the electric water pump and all quick-connect coolant fittings for leaks. Pressure test the entire cooling system after repairs. Replace the expansion tank cap as a weak cap allows premature boiling. Use only BMW-approved blue coolant — mixing coolant types causes gel formation.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • Genuine BMW main engine-coolant expansion tank 17139485733
    OEM17138610655Cross-ref17139485733

    Confirmed leaking main engine-cooling expansion-tank replacement. Confirm VIN because the vehicle contains multiple coolant reservoirs and production revisions..

    BMW Parts Deal
  • Genuine BMW main expansion-tank cap 17117639020
    OEM17117521071Cross-ref17117639020

    Fitment: 2020-2025 BMW 840i/840i xDrive G14/G15/G16 main engine-cooling expansion tank; confirm VIN and tank/cap position before ordering because a second cooling circuit may use different hardware..

    BMW Parts Deal

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Typical repair cost:$350 - $800

Research This Issue

Based on 110 owner reports

GoogleRedditYouTubeNHTSA
Community Reported
High ConfidenceVerified110 owner reportsLast reported by owners Mar 2026Reviewed Aug 2026
NHTSA Recalls1 recall

POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)

BMW of North America, LLC (BMW) is recalling certain 2023 Toyota GR Supra, 3 Series Sedan (330i xDrive, M340i xDrive, M3), 5 Series Sedan (530i, 530i xDrive, M5), 4 Series Gran Coupe (430i, 430i xDrive), 4 Series Coupe (430i, 430i xDrive, M440i xDrive), 4 Series Convertible (430i, 430i xDrive, M440i xDrive), 8 Series Coupe (840i, M850i xDrive, M8), 8 Series Convertible (840i, M850i xDrive, M8), 8 Series Gran Coupe (850i xDrive, M8), X3 SAV (X3 xDrive30i, X3M), X4 SAV (X4 xDrive30i), X5 SAV (X5 xDrive40i, X5 M50i, X5M), X6 SAV (X6 xDrive40i, X6 M50i, X6M), and Z4 sDrive30i, Z4 M40i vehicles. The weld seam of the integrated transmission control unit's cover may not have been manufactured properly, which could allow automatic transmission oil to leak into the transmission control unit.

Campaign #23V82100006/12/2023

Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.

🔧
A mechanic who knows YOUR exact car
Answers tuned to your year, make, model & trim — not generic advice. Save your garage so it always has the right context.
Get ahead of BMW 8 Series problems — free
Leave your email and we'll alert you the moment there's a new recall or known issue for your BMW 8 Series. Free, no account needed.

Don't see your problem? Describe your symptoms to get a diagnosis, or get a full repair guide.

Other BMW Models

BMW M332BMW 3 Series27BMW i525BMW M522BMW M340i22BMW 6 Series21

Frequently Asked Questions

What are the most common BMW 8 Series problems?

According to Au7o's analysis of 345+ owner reports, the 2022 BMW 8 Series has 6 documented issues. The most frequently reported are: N63TU3 Valve Stem Seal Failure & Oil Consumption (M850i), N63TU3 Timing Chain Guide Wear (M850i), N63/S63 V8 Oil Consumption in M850i. Of these, 2 are rated critical and should be addressed promptly.

Is the BMW 8 Series reliable?

The 2022 BMW 8 Series has 6 known issues documented across 345+ owner reports. 2 issues are rated critical: N63TU3 Valve Stem Seal Failure & Oil Consumption (M850i) and N63TU3 Timing Chain Guide Wear (M850i). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common BMW 8 Series problems?

Repair costs for known BMW 8 Series issues range from $150 to $10,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, N63TU3 Valve Stem Seal Failure & Oil Consumption (M850i), typically costs $3,500-$10,000 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2019-2024 BMW 8 Series N63TU3 Valve Stem Seal Failure & Oil Consumption (M850i)?

The N63TU3 4.4L twin-turbo V8 in M850i models suffers from premature valve stem seal degradation caused by the hot-V turbo placement. Turbochargers mounted between the cylinder banks create extreme heat that accelerates valve stem seal hardening and failure, allowing oil to leak… Repairs typically run $3,500-$10,000. Severity: high.

What is the 2019-2024 BMW 8 Series N63TU3 Timing Chain Guide Wear (M850i)?

The N63TU3 4.4L twin-turbo V8 in M850i models uses plastic timing chain guides that wear prematurely under the extreme heat and stress of the hot-V configuration. As the plastic guides wear, the timing chain develops slack, causing rattling on cold starts and eventually risking t… Repairs typically run $4,000-$7,500. Severity: high.

Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.

Data sourced from 345+ owner reports, NHTSA recalls, TSBs, and automotive forums.

What is the 2019-2025 BMW 8 Series N63/S63 V8 Oil Consumption in M850i?

The M850i equipped with the N63TU4 twin-turbo V8 carries forward the oil consumption tendencies of the N63 engine family, though the TU4 revision is improved over earlier versions. Oil consumption of 1 quart per 3,000-5,000 miles is still common and considered within BMW's specif… Repairs typically run $500-$5,000. Severity: medium.

What is the 2019-2025 BMW 8 Series B58 Engine Coolant Loss from Expansion Tank and Water Pump?

The 840i with B58 inline-six turbo engine experiences coolant loss primarily from the plastic expansion tank cracking and the electric water pump connection failing. The expansion tank develops hairline cracks at the weld seams that are nearly invisible until significant coolant… Repairs typically run $350-$800. Severity: medium.

What is the 2019-2025 BMW 8 Series Adaptive Suspension Damper Malfunction?

The 8 Series equipped with Adaptive M Suspension experiences electronic damper failures, particularly in the rear. The electronically controlled dampers use solenoid valves to adjust firmness in real-time, and these solenoids can fail from fluid contamination or electrical faults… Repairs typically run $800-$2,000. Severity: medium.

What is the 2019-2024 BMW 8 Series Premature Tire Wear (All 8 Series & M8)?

All 8 Series and M8 models experience premature tire wear, particularly on the rear tires, due to aggressive factory alignment settings. The rear suspension uses approximately -2.0 degrees of negative camber from the factory, which causes rapid inner edge tire wear. Rear tires co… Repairs typically run $150-$2,400. Severity: low.