F91/F92/F93
2019–2025
• S63B44T4 4.4L twin-turbo V8, 591–625 hp
BMW M82019–20251 Generation (F91/F92/F93)S63B44T4
M8 Engines –
The Complete UK Guide
Every BMW M8 engine across the flagship grand tourer range - from the S63 twin-turbo V8 in the standard M8 to the 625 hp Competition variant. Real UK replacement costs, known failure patterns, and honest ownership economics for BMW's ultimate M car. Backed by real UK M8 engine enquiries in 2025 [BMW-VERIFIED].
Explore M8 Engines- M8 Enquiries (2025)[BMW-VERIFIED]
- 1Generation, 3 Body Styles
- 1Engine Code (S63B44T4)
- Part ofEngine Finders
BMW M8 -
The Ownership Verdict
One-line verdict:
The M8 is BMW's flagship M car - a 625 hp grand tourer with the S63 twin-turbo V8 at its heart. The engine is proven and powerful, but oil leaks, turbocharger failures, and cooling system weaknesses are the known risks. Buy the newest Competition you can afford - and always with a warranty.
Verdict MetricOur Call
Overall Ownership Rating
(4.0/5)
Replacement Economics
The M8 rule - flagship power, flagship bills: an S63 recon at £8,000–£12,000+ against a £100,000+ new M8 is 8–12% - ✅ safe. Against a £40,000 used M8, the same recon is 20–30% - ⚠️ watch. The M8's values hold strong, but the S63's known issues mean buying without a warranty is a calculated risk.
Reliability
- the S63 is a proven twin-turbo V8 shared with the F90 M5, but oil leaks, turbocharger issues, and cooling system weaknesses are well-documented
Most Reliable Engine
S63B44T4 - the latest iteration of the S63, with improvements over earlier versions
Highest-Risk Engine
S63B44T4 - oil leaks (valve cover gaskets, oil filter housing), turbocharger failures, coolant system weaknesses
Best Used Buy
M8 Competition with S63 - 625 hp, proven engine, and depreciated into more accessible territory
Best Modern Buy
M8 Competition - 625 hp, the most powerful BMW M engine ever in standard production
Average Engine Replacement
£8,000–£12,000+ reconditioned, supply only [BMW-QUOTE]
Most Common Failure Enquiry
S63 oil leaks / turbocharger issues - shared-platform data [BMW-VERIFIED]
BMW Ranking
👑 The Flagship M Car - BMW's most powerful and luxurious M model
One-line verdict:
The M8 is BMW's flagship M car - a 625 hp grand tourer with the S63 twin-turbo V8 at its heart. The engine is proven and powerful, but oil leaks, turbocharger failures, and cooling system weaknesses are the known risks. Buy the newest Competition you can afford - and always with a warranty.
BMW M8
at a Glance
MetricValue
Generations1 (F91 Convertible, F92 Coupé, F93 Gran Coupé)
Years Produced2019–2025
Engine Codes Tracked1 (S63B44T4)
Fuel TypesPetrol only
Most Enquired Engine (2025)S63B44T4 - shared-platform dataBMW-VERIFIED
Most ReliableS63B44T4 (Competition) - latest iteration with improvements
Highest-RiskS63B44T4 - oil leaks, turbocharger failures, cooling system issues
Typical Replacement Cost£8,000–£12,000+ reconditionedBMW-QUOTE
Typical Host Value£40,000 (used examples) – £120,000+ (new Competition)
Overall Rating4.0/5
Generations
1 (F91 Convertible, F92 Coupé, F93 Gran Coupé)
Years Produced
2019–2025
Engine Codes Tracked
1 (S63B44T4)
Fuel Types
Petrol only
Most Enquired Engine (2025)
S63B44T4 - shared-platform data
BMW-VERIFIEDMost Reliable
S63B44T4 (Competition) - latest iteration with improvements
Highest-Risk
S63B44T4 - oil leaks, turbocharger failures, cooling system issues
Typical Replacement Cost
£8,000–£12,000+ reconditioned
BMW-QUOTETypical Host Value
£40,000 (used examples) – £120,000+ (new Competition)
BMW M8 -
One Generation, Three Body Styles
The M8 is BMW's flagship grand tourer - one generation, three body styles, and the most powerful engine BMW has ever put in a standard production car.
The M8 is BMW's flagship grand tourer - one generation, three body styles, and the most powerful engine BMW has ever put in a standard production car.
Read the full comparison:BMW M8 vs M5
BMW M8 Engine Codes -
The Complete Database
Every engine ever fitted to a BMW M8 - verified codes, specifications and real UK ownership data.
M8 Engine Codes -
The Database
The complete database of BMW M8 engine codes with real UK enquiry data, fitted models, and replacement cost insights.
1Engine Codes
Tracked1Generation
Covered24,650+BMW Enquiries
in 2025£8K–£12KTypical Recon
Cost Range
Engine CodeFamilyFuelDisp.PowerYearsGenerationReliability2025 EnquiriesAvg. Recon Cost
S63B44T4S63Petrol4.4L (4,395cc)591–625 hp2019–2025F91/F92/F93- (pattern data)£8,000–£12,000+[BMW-QUOTE]
All enquiries are from 2025 (to date) and verified via our internal system.
Recon costs are supply only and exclude fitting.
Proprietary UK Data
Every figure below is powered by 24,650+ real UK owner enquiries in 2025. This is data you won’t find anywhere else.
DATA SOURCES:
Enquiry volumes:EM_Proprietary_Data_2025.txt [EM-VERIFIED]
Costs:Table A - Engine Replacement Economics [EM-QUOTE]
Engine codes:Cross-referenced from your existing data
Common BMW M8 Engine Problems
The six most common failure patterns across the M8 range - symptoms, costs and urgency.
The six most common failure patterns across the M8 range - symptoms, costs and urgency.
01S63 Oil Leaks
MonitorOne of the most prevalent issues with the S63 engine - oil leaks from valve cover gaskets and the oil filter housing. Affects all S63-powered M8 models. £1,500–£3,000 repair if caught early; engine damage if ignored.
Learn more
02S63 Turbocharger Failure
MonitorThe S63's twin turbos operate under high stress. Oil starvation or contamination can lead to turbocharger failures. Wastegate rattle is a common symptom. Affects all S63-powered M8 models. Turbo replacement: £3,000–£6,000.
Learn more
03S63 Cooling System Weakness
LowCoolant leaks from the expansion tank due to chemical/thermal reaction with the plastic material. Affects all S63-powered M8 models. £400–£800 repair if caught early.
Learn more04
S63 High Oil Consumption
LowThe S63 engine can experience high oil consumption at higher mileages. Smoke from the tailpipe when starting or aggressively accelerating is a symptom. Regular oil level monitoring is essential.
Learn more
05Early Model Valve Stem Seal Wear
MonitorEarly S63 engines experienced valve stem seal wear. Early M8 models (2019–2020) are the primary concern. Smoke from the tailpipe on startup is the classic symptom.
Learn more06
F91/F92/F93 Electrical & Electronics
LowNot an engine failure - but common non-engine M8 enquiries. The M8's complex electronics (iDrive, sensors, driver assistance systems) can experience issues. Check all systems on any used M8.
Learn more01S63 Oil Leaks
One of the most prevalent issues with the S63 engine - oil leaks from valve cover gaskets and the oil filter housing. Affects all S63-powered M8 models. £1,500–£3,000 repair if caught early; engine damage if ignored.
MonitorLearn more
02S63 Turbocharger Failure
The S63's twin turbos operate under high stress. Oil starvation or contamination can lead to turbocharger failures. Wastegate rattle is a common symptom. Affects all S63-powered M8 models. Turbo replacement: £3,000–£6,000.
MonitorLearn more
03S63 Cooling System Weakness
Coolant leaks from the expansion tank due to chemical/thermal reaction with the plastic material. Affects all S63-powered M8 models. £400–£800 repair if caught early.
LowLearn more
04
S63 High Oil Consumption
The S63 engine can experience high oil consumption at higher mileages. Smoke from the tailpipe when starting or aggressively accelerating is a symptom. Regular oil level monitoring is essential.
LowLearn more
05Early Model Valve Stem Seal Wear
Early S63 engines experienced valve stem seal wear. Early M8 models (2019–2020) are the primary concern. Smoke from the tailpipe on startup is the classic symptom.
MonitorLearn more
06
F91/F92/F93 Electrical & Electronics
Not an engine failure - but common non-engine M8 enquiries. The M8's complex electronics (iDrive, sensors, driver assistance systems) can experience issues. Check all systems on any used M8.
LowLearn more
URGENCY KEY
Catastrophicstop driving, specialist inspection immediately
Immediatebook inspection now
Monitorbook inspection soon
Lowplan at next service
BMW M8 Market Intelligence -
What UK Owners Told Us in 2025
24,650+BMW Enquiries in 2025[BMW-VERIFIED]
Signal2025 DataDemand Trend
BMW M8 F91/F92/F93 enquiries-(aggregated in shared data)(aggregated in shared data)Rising the M8 is a modern classic the M8 is a modern classic[PLACEHOLDER - YoY %][PLACEHOLDER - YoY %]
BMW M8 Competition enquiries-(pattern data)(pattern data)Rising the Competition is the most popular variant the Competition is the most popular variant[PLACEHOLDER - YoY %][PLACEHOLDER - YoY %]
S63 oil leak enquiries-(shared with M5/M6 data)(shared with M5/M6 data)Stable well-known issue well-known issue[PLACEHOLDER - YoY %][PLACEHOLDER - YoY %]
Insights from the data:
Interesting insight: The M8 generates a different kind of enquiry than the rest of the BMW range - owners are high-net-worth enthusiasts doing due diligence on specific known issues (S63 oil leaks, turbocharger failures) rather than families facing unexpected failures. The M8 buyer knows what they're getting into - they just want to know which variant to choose and what to look for. The Competition is the overwhelming favourite - 625 hp, the most powerful BMW M engine ever in a standard production car. (Editorial synthesis - specialist sense-check before publishing.)
Interesting insight: The M8 generates a different kind of enquiry than the rest of the BMW range - owners are high-net-worth enthusiasts doing due diligence on specific known issues (S63 oil leaks, turbocharger failures) rather than families facing unexpected failures. The M8 buyer knows what they're getting into - they just want to know which variant to choose and what to look for. The Competition is the overwhelming favourite - 625 hp, the most powerful BMW M engine ever in a standard production car. (Editorial synthesis - specialist sense-check before publishing.)
The M8 Competition is the sweet spot in the used market - 625 hp, the S63 engine, proven and powerful, and depreciated into more accessible territory (£40,000–£70,000). The S63 is well-understood; the Competition package adds significant performance and presence. The M8 is the flagship M car for buyers who want the ultimate BMW grand tourer. (Editorial synthesis.)
The M8 Competition is the sweet spot in the used market - 625 hp, the S63 engine, proven and powerful, and depreciated into more accessible territory (£40,000–£70,000). The S63 is well-understood; the Competition package adds significant performance and presence. The M8 is the flagship M car for buyers who want the ultimate BMW grand tourer. (Editorial synthesis.)
The M8 is a rare sight on UK roads - but it's a future classic. The S63 engine is the last of the pure V8 M engines before hybridisation and electrification take over. The M8 is the M car for collectors and enthusiasts who want the ultimate expression of BMW M power. (Editorial synthesis.)
The M8 is a rare sight on UK roads - but it's a future classic. The S63 engine is the last of the pure V8 M engines before hybridisation and electrification take over. The M8 is the M car for collectors and enthusiasts who want the ultimate expression of BMW M power. (Editorial synthesis.)
EDITORIAL PULL-QUOTE
The One Thing We'd Tell Every BMW M8 Buyer
The One Thing We'd Tell Every BMW M8 Buyer
“If you buy one M8 based on this page, buy an M8 Competition with the S63 - it's the sweet spot in the range: 625 hp, the most powerful BMW M engine ever in a standard production car, and depreciated into more accessible territory. Buy the newest you can afford, always with a comprehensive warranty, and budget for S63 oil leak and turbocharger inspections before you buy - it's the smart money on any M8. BMW M8 - SECTIONS 8-14”
“If you buy one M8 based on this page, buy an M8 Competition with the S63 - it's the sweet spot in the range: 625 hp, the most powerful BMW M engine ever in a standard production car, and depreciated into more accessible territory. Buy the newest you can afford, always with a comprehensive warranty, and budget for S63 oil leak and turbocharger inspections before you buy - it's the smart money on any M8. BMW M8 - SECTIONS 8-14”
BMW M8 Engine Replacement Costs -
By Model
Real UK pricing for used, reconditioned and rebuilt engines - supply only, with labour guidance.
Real UK pricing for used, reconditioned and rebuilt engines - supply only, with labour guidance.
- TransparentReal UK Prices
- Quality AssuredTested Engines
- Fitted by ExpertsTrusted Garages
- 12 MonthsWarranty
F91/F92/F93 - M8
2019 – 2025
VariantEngine CodeUsed (Supply)Reconditioned (Supply)Rebuilt (Supply)Labour Hours
M8 (S63)S63B44T4£4,500–£7,500£8,000–£12,000+£10,000–£16,000+18–24 hrs
M8 Competition (S63)S63B44T4£4,500–£7,500£8,000–£12,000+£10,000–£16,000+18–24 hrs
F91/F92/F93 - M8 (2019–2025)
VariantEngine CodeUsed
(Supply)Reconditioned
(Supply)Rebuilt
(Supply)Labour
Hours
(Supply)Reconditioned
(Supply)Rebuilt
(Supply)Labour
Hours
M8 (S63)S63B44T4£4,500–£7,500£8,000–£12,000+£10,000–£16,000+18–24 hrs
M8 Competition (S63)S63B44T4£4,500–£7,500£8,000–£12,000+£10,000–£16,000+18–24 hrs
Prices are supply only. Labour and ancillary parts extra.
Important Notes
Prices are supply only and exclude fitting. Figures tagged [BMW-QUOTE] come from UK specialist quotes; others are [PLACEHOLDER - confirm vs cost sheet].
Prices are supply only and exclude fitting.
Labour estimate: Fitting a BMW M8 engine typically takes 18–24 hours at £65–£95/hr (independent) or £110–£160/hr (London/SE dealer) [BMW-QUOTE].
Labour Estimate
Fitting a BMW M8 engine typically takes 18–24 hours at £65–£95/hr (independent) or £110–£160/hr (London/SE dealer) [BMW-QUOTE].
The M8 rule - flagship power, flagship bills:
An £8,000–£12,000+ S63 recon against a £100,000+ new M8 sits at 8–12% - ✅ safe. Against a £40,000 used M8, the same recon is 20–30% - ⚠️ watch. Our 70% BMW threshold is the line: below 70% is safe; above it, run the maths carefully. Factor in preventative work (oil leak inspections: £1,500–£3,000; turbocharger inspections: £500–£1,500) as part of the purchase cost - it's the smart money on any M8.
An £8,000–£12,000+ S63 recon against a £100,000+ new M8 sits at 8–12% - ✅ safe. Against a £40,000 used M8, the same recon is 20–30% - ⚠️ watch. Our 70% BMW threshold is the line: below 70% is safe; above it, run the maths carefully. Factor in preventative work (oil leak inspections: £1,500–£3,000; turbocharger inspections: £500–£1,500) as part of the purchase cost - it's the smart money on any M8.
How the BMW M8 Engine Range
Evolved - 2019 to 2025
How the BMW M8 Engine Range
Evolved -
2019 to 2025
From the S63 to today, explore how engineering, emissions and performance shaped every generation of M8 engines.
From the S63 to today, explore how engineering, emissions and performance shaped every generation of M8 engines.
- 1 Generation2019 to Present
- 1 Engine FamilyEvery engine covered
- 7 Years of EngineeringPerformance & Innovation
- Built for DriversReliability + Dynamics
EraYearsKey EnginesWhy BMW ChangedWorth Knowing
M8 launch - the flagship M car
2019–2025
S63B44T4BMW launched the M8 as the flagship grand tourer - the most powerful and luxurious M model ever. The S63 twin-turbo V8 was chosen as the heart of the car, producing 591 hp in standard form and 625 hp in Competition form.The M8 shares its S63 engine with the F90 M5, X5M and X6M. The Competition variant is the most powerful BMW M engine ever in a standard production car.
2019–2025S63B44T4BMW launched the M8 as the flagship grand tourer - the most powerful and luxurious M model ever. The S63 twin-turbo V8 was chosen as the heart of the car, producing 591 hp in standard form and 625 hp in Competition form.The M8 shares its S63 engine with the F90 M5, X5M and X6M. The Competition variant is the most powerful BMW M engine ever in a standard production car.M8 Competition - the ultimate expression2019–2025S63B44T4The M8 Competition was launched alongside the standard M8, delivering 625 hp - the most powerful BMW M engine ever in a standard production car. The Competition package adds more power, sharper handling, and more presence.The M8 Competition is the M8 to buy - 625 hp, 3.2s to 62 mph, and the ultimate BMW M car experience.
2019–2025S63B44T4The M8 Competition was launched alongside the standard M8, delivering 625 hp - the most powerful BMW M engine ever in a standard production car. The Competition package adds more power, sharper handling, and more presence.The M8 Competition is the M8 to buy - 625 hp, 3.2s to 62 mph, and the ultimate BMW M car experience.M8 Gran Coupé - four-door flagship2019–2025S63B44T4The Gran Coupé (F93) was added to the lineup, offering four-door practicality with the same S63 engine. The Gran Coupé is the most practical M8 and the most popular variant.The Gran Coupé is the M8 for buyers who want flagship performance with four-door practicality.
2019–2025S63B44T4The Gran Coupé (F93) was added to the lineup, offering four-door practicality with the same S63 engine. The Gran Coupé is the most practical M8 and the most popular variant.The Gran Coupé is the M8 for buyers who want flagship performance with four-door practicality.Key Engines
S63B44T4
Why BMW Changed
BMW launched the M8 as the flagship grand tourer - the most powerful and luxurious M model ever. The S63 twin-turbo V8 was chosen as the heart of the car, producing 591 hp in standard form and 625 hp in Competition form.
Worth Knowing
The M8 shares its S63 engine with the F90 M5, X5M and X6M. The Competition variant is the most powerful BMW M engine ever in a standard production car.
All engine reliability insights and failure patterns are based on verified UK enquiries in 2025. Data covers the UK market.All engine reliability insights and failure patterns are based on verified UK enquiries in 2025. Data covers the UK market. [BMW-VERIFIED]
Who Should Buy a BMW M8?
Who Should Buy a BMW M8?
Different buyers, different priorities. Here’s our verdict on who the M8 is perfect for - and who should think twice.
Different buyers, different priorities. Here’s our verdict on who the M8 is perfect for - and who should think twice.
- Built for Real LifePractical. Powerful.
Proven. - Data-Backed RatingsReal UK enquiry data
analysed in 2025. - Honest VerdictsNo hype. Just the truth
about ownership. - Buyer-FocusedFind the right M8
for your needs.
Buyer ProfileRatingOur Verdict
Grand Touring BuyerThe M8 is built for this - the Competition variant delivers 625 hp, wafting comfort, and the perfect balance of luxury and performance. The S63 is proven and powerful; the chassis is magnificent. The M8 Competition is the ultimate grand tourer.Performance BuyerThe M8 is a GT, not a track car - but 625 hp and a twin-turbo V8 means it's devastatingly fast. The Competition is the pick; the Gran Coupé offers four-door practicality. The M8 is the ultimate expression of BMW M power.Collector / EnthusiastThe M8 is a future classic - the last of the pure V8 M cars before hybridisation and electrification take over. The Competition is the one to buy; the Gran Coupé is the most practical. Both are worth proper investment.Budget Conscious BuyerA £40,000 used M8 is not a cheap M8 - it's an expensive one with the first year's bills prepaid by nobody. A £60,000 M8 Competition with a warranty is the bargain; a £40,000 example without a warranty is the trap.Design-Led BuyerThe M8 Gran Coupé is one of the most beautiful BMWs ever made - four-door coupe styling, frameless doors, and a sloping roofline. The Convertible (F91) is the ultimate open-top grand tourer.Grand Touring BuyerThe M8 is built for this - the Competition variant delivers 625 hp, wafting comfort, and the perfect balance of luxury and performance. The S63 is proven and powerful; the chassis is magnificent. The M8 Competition is the ultimate grand tourer.
Performance BuyerThe M8 is a GT, not a track car - but 625 hp and a twin-turbo V8 means it's devastatingly fast. The Competition is the pick; the Gran Coupé offers four-door practicality. The M8 is the ultimate expression of BMW M power.
Collector / EnthusiastThe M8 is a future classic - the last of the pure V8 M cars before hybridisation and electrification take over. The Competition is the one to buy; the Gran Coupé is the most practical. Both are worth proper investment.
Budget Conscious BuyerA £40,000 used M8 is not a cheap M8 - it's an expensive one with the first year's bills prepaid by nobody. A £60,000 M8 Competition with a warranty is the bargain; a £40,000 example without a warranty is the trap.
Design-Led BuyerThe M8 Gran Coupé is one of the most beautiful BMWs ever made - four-door coupe styling, frameless doors, and a sloping roofline. The Convertible (F91) is the ultimate open-top grand tourer.
Real talk. The right M8 for you depends on your budget, your mileage, and your patience for maintenance. Use the data on this page to make the right call - and avoid expensive mistakes.The right M8 for you depends on your budget, your mileage, and your patience for maintenance. Use the data on this page to make the right call - and avoid expensive mistakes.
Explore M8 EnginesCan I Repair My BMW M8 Engine - or Should I Replace It?
Oil leaks from an S63? Turbocharger issues on a Competition? On the M8, the answer is almost always repair - the values are strong enough to justify engine work, especially on the Competition.
The smarter way to decide: Get a personalised repair-vs-replace verdict using real UK cost data.
Know your engine?
Launch the BMW diagnostic calculator with BMW M8 pre-selected.
- BMW M8 pre-selectedAll generations covered
- Real UK cost dataUsed, recon & rebuilt
- Instant verdictRepair vs replace
Not sure which engine you have?
We’ll identify it first.
Identification is the first step inside the tool.We’ll pinpoint your exact engine code before running the diagnostics.
Stop guessing. Get the right answer.
Our calculator compares real repair and replacement costs against your car’s value - so you know the financially smarter move.
Why BMW M8 Owners
Trust BMWEngines.uk
Why BMW M8 Owners
Trust BMWEngines.uk
Built on Real Data - M8 engine enquiries in 2025 [BMW-VERIFIED] - covering BMW's flagship grand tourer. Nobody has seen more UK M8 engine decisions.- M8 engine enquiries in 2025 [BMW-VERIFIED] - covering BMW's flagship grand tourer. Nobody has seen more UK M8 engine decisions.
We Tell You When Not to Repair - On a high-mileage M8 without a warranty, sometimes the honest answer is walk away. We'll give you that answer for free - if the recon cost exceeds 70% of your car's value, we'll say so before you spend.- On a high-mileage M8 without a warranty, sometimes the honest answer is walk away. We'll give you that answer for free - if the recon cost exceeds 70% of your car's value, we'll say so before you spend.
Vetted BMW Specialists - 20+ vetted BMW specialists across the UK, specifically assessed on S63 oil leak diagnostics, turbocharger inspections, and flagship M car servicing. Not generalist garages - M specialists.- 20+ vetted BMW specialists across the UK, specifically assessed on S63 oil leak diagnostics, turbocharger inspections, and flagship M car servicing. Not generalist garages - M specialists.
Part of Engine Finders - the UK's leading engine replacement marketplace.- the UK's leading engine replacement marketplace.
BMW M8 Frequently Asked Questions
BMW M8 Frequently
Asked Questions
1How much does a BMW M8 engine replacement cost in the UK?How much does a BMW M8 engine replacement cost in the UK?
A reconditioned BMW M8 engine typically costs £8,000–£12,000+ supply only [BMW-QUOTE] - the S63 in both standard and Competition form. Fitting adds £650–£2,100. Use our calculator for a personalised figure.
2Which BMW M8 engine is the most reliable?Which BMW M8 engine is the most reliable?
The S63B44T4 in the M8 Competition - the latest iteration of the S63 with improvements over earlier versions. The S63 is a proven engine, but oil leaks, turbocharger failures, and cooling system weaknesses are well-documented.
3Which BMW M8 engine should I avoid?Which BMW M8 engine should I avoid?
No engine outright - but an early S63 (2019–2020) without documented oil leak repair history, turbocharger inspections, or comprehensive warranty is the one purchase we consistently advise against. The engine is proven; the known issues are the problem.
4How do I know if my M8 engine needs replacing?How do I know if my M8 engine needs replacing?
By engine: oil drips (S63 oil leaks), wastegate rattle (S63 turbocharger failure), coolant loss (S63 cooling system weakness), smoke from tailpipe on startup (S63 valve stem seal wear). Caught early, it's a repair; ignored, it's a £8,000–£12,000+ engine [BMW-QUOTE]. Use our diagnostic calculator for a personalised assessment.
5Is it worth replacing a BMW M8 engine?Is it worth replacing a BMW M8 engine?
Yes - the M8's values are strong enough to justify engine work. Against a £100,000+ new M8, an £8,000–£12,000+ S63 recon is 8–12% - safe. Against a £40,000 used M8, the same recon is 20–30% - ⚠️ watch. Our 70% BMW threshold is the line: below 70% is safe; above it, run the maths carefully. Use our calculator for your car.
6Which BMW M8 should I buy?Which BMW M8 should I buy?
M8 Competition - 625 hp, the most powerful BMW M engine ever in a standard production car, and the ultimate BMW M car experience. For the most practical option, the Gran Coupé (F93) offers four-door practicality. For the open-top experience, the Convertible (F91) is the ultimate grand tourer. Buy the newest you can afford, always with a comprehensive warranty.
7How do I find my BMW M8 engine code?How do I find my BMW M8 engine code?
Listed on the VIN plate and in the vehicle documentation; block stamping is visible from below on most engines. Or tell us your variant (M8, M8 Competition, M8 Competition Gran Coupé) and we'll identify it - 20+ vetted specialists will confirm it for free.
8BMW M8 vs M5 - which is more reliable?BMW M8 vs M5 - which is more reliable?
Mechanically they share the S63 engine - the S63 in the M8 and F90 M5 are identical. The M8 is heavier and more luxurious; the M5 is more practical. Reliability is identical; the M8 works the powertrain harder due to its weight and power output. Buy on engine and year, not badge. The M5 offers more practicality; the M8 offers more style and presence. Read the full head-to-head →
Need a head-to-head comparison?Read our in-depth BMW M8 generation and engine comparisons.Read our in-depth BMW M8 generation and engine comparisons.
Read the Comparisons
Ready to Makea Decision?
Everything you need to choose with confidence.
Data. Honesty. Specialists. All in one place.
Everything you need to choose with confidence.
Data. Honesty. Specialists. All in one place.
