M8 Competition Engines
from £14,995 to £28,000
Rebuilt units from £14,995 · Common codes: S63B44T4, S63B44B, S63, N63
BMW ENGINE MARKETPLACE
BMW M8 S63 Performance Engine Replacement - Rebuilt & Options
Get quotes from UK BMW M8 performance engine specialists. Compare rebuilt & reconditioned engines for M8 & M8 Competition - S63 covered. Find UK performance engine specialists.
Supply & Fit Available
12-Month Warranty
Nationwide Delivery
100+ Suppliers
M8 Standard Engines
from £12,500 to £24,000
Rebuilt units from £12,500 · Common codes: S63B44B, S63B44T4, S63, N63B44T3
M8 Early & Facelift Engines
from £11,000 to £26,000
Rebuilt units from £11,000 · Common codes: S63B44T4 (LCI), S63B44B (Pre-LCI), S63B44
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Engine replacement near me - UK-wide specialist network
Compare reconditioned, rebuilt & used engine prices
Supply & fit available - parts and labour from vetted specialistsInstant engine replacement quote - 100% free, no obligationEngine replacement near me - UK-wide specialist networkCompare reconditioned, rebuilt & used engine pricesSupply & fit available - parts and labour from vetted specialistsHow It Works
3 Simple Steps3 Simple Stepsto Finding the Best BMW M8 Replacement Engineto Finding the Best BMW M8 Replacement Engine
12-Month Warranty
Supply & Fit Available
Nationwide Delivery
Trusted UK Suppliers
Most replacements completed within 3-5 days.
Live UK Engine Market Data
What Are UK Drivers Paying for BMW M8 Engine Replacement
The table below shows typical UK rebuilt engine replacement costs across different BMW M8 variants, covering known failure causes, engine codes, fuel types, and engine sizes.
Average Market Prices
↻ Last updated: 4 Aug 26, 9:26
Customer Reviews
Trusted by BMW M8 Owners Across the UK
Rated 4.8 out of 5 by 1,081 verified customers who sourced reconditioned and used BMW M8 engines through EngineMarket.
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“Thanks to EngineMarket, I saved over £1,200 on my engine replacement and got matched with a great local specialist within the hour.”
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Variants We Cover
BMW M8 Engine ReplacementAll Variants Covered
M8 Competition Coupe
S63B44T4 4.4L Petrol
Rebuilt Engines: £15,500-£22,000
M8 Competition Convertible
S63B44T4 4.4L Petrol
Rebuilt Engines: £15,000-£23,000
M8 Competition Gran Coupe
S63B44T4 4.4L Petrol
Rebuilt Engines: £14,995-£22,500
M8 Coupe
S63B44B 4.4L Petrol
Rebuilt Engines: £14,000-£19,000
M8 Convertible
S63B44B 4.4L Petrol
Rebuilt Engines: £14,500-£19,500
M8 Gran Coupe
S63B44B 4.4L Petrol
Rebuilt Engines: £13,500-£18,000
M8 First Edition
S63B44T4 4.4L Petrol
Rebuilt Engines: £16,000-£24,000
M8 Pre-LCI
S63B44B 4.4L Petrol
Rebuilt Engines: £13,000-£19,500
M8 LCI
S63B44T4 4.4L Petrol
Rebuilt Engines: £15,000-£22,000
M8 Final Edition
S63B44T4 4.4L Petrol
Rebuilt Engines: £16,500-£25,000
Not sure which variant your BMW M8 is- Enter your registration number above - we’ll identify the exact sub-model, engine code and compatible replacement options instantly.
M8
Engine Codes
BMW M8 Engine CodesFull Technical Specifications & Replacement Guide
Every engine code fitted to the BMW M8 across all generations, with technical specs, compatible variants and trims, known failure points, and average rebuilt prices from UK specialists. Select any engine code to compare quotes.
Petrol Engines
Extracted from detailed petrol and performance engine families across BMW M8 variants.
S63B44T4 - 4.4 Litre Petrol
Main replacement demand comes from timing-chain, cooling-system and performance thermal-management faults.
Compatible variants
M8 Competition CoupeM8 Competition ConvertibleM8 Competition Gran CoupeM8 First EditionM8 Final EditionM8 LCI Competition
Avg. rebuilt price
£15,500 - £23,000
Supply only
Technical specifications
- Fuel type
- Petrol
- Engine size
- 4.4L
- Power output
- 600-625 hp
- Years fitted
- 2019-2025
Common failures
- ●Main replacement demand comes from timing-chain, cooling-system and performance thermal-management faults.
- ●Confirm exact engine code and fitment before ordering.
- ●Ask for warranty and supply & fit terms.
Not sure which engine code?
Can't find your engine code- Enter your registration number above - we'll instantly identify the exact unit, its technical specifications, and live replacement prices from UK BMW M8 engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.
M8
Common Problems
BMW M8 Engine Problems - What It Costs to Fix & When Replacement Makes Sense
The BMW M8’s S63 twin-turbo V8 delivers exceptional performance, but high thermal load and complex valvetrain components create predictable failure points as mileage climbs. The Competition variant (S63B44T4) and standard M8 (S63B44B) dominate replacement enquiries, with rod bearing wear, turbocharger failure, and timing chain guide degradation appearing...
BMW M8 Rod Bearing Failure - Why S63 V8 Engines Spin Bearings
BMW M8 Rod Bearing Failure
Most affected vehicles
Failure mileage range
Typical failure window
Root cause
Repair options & estimated costs (UK ranges)
| Repair tier | Dealer price | Specialist price | What it involves | Longevity / suitability |
|---|---|---|---|---|
| Intermediate - Bearing Replacement Only | £6,500 - £9,000 | £3,800 - £5,500 | Remove sump and oil pump, replace rod bearings with upgraded coated units, flush oil system | Only viable if caught immediately after first knocking sound. Crank must be undamaged. |
| Major - Crankshaft Regrind & Bearing Replacement | £11,000 - £15,000 | £6,500 - £9,000 | Engine removal, crank regrind or replacement, new bearings, oil pump, full gasket set | Suitable for early-stage bearing wear without catastrophic rod failure. Adds 60k+ miles. |
| Full Replacement - Rebuilt S63 Engine | £22,000 - £30,000 | £14,995 - £22,000 | Supply & fit fully rebuilt S63 engine with upgraded bearings, timing components, and bench testing | Best long-term solution. Upgraded bearings prevent recurrence. 12-month warranty included. |
Our recommendation
If you hear a deep knocking sound from the bottom end that rises with RPM, stop driving immediately. Catching bearing wear before the crank is damaged makes the £3,800-£5,500 intermediate repair viable. However, most M8 owners discover the issue after significant damage has occurred. On a car worth £45,000-£70,000, the full replacement route (£14,995-£22,000) with upgraded bearings delivers better value than repeated major repairs.
Compare rebuilt S63B44T4 and S63B44B engine prices for your BMW M8Replacement Engine Options
BMW M8 Engine TypesOptions, Costs & What to Expect
Every engine type listed below is available through our UK network, with typical price ranges varying by variant, engine code and your specific budget.
BMW M8 Reconditioned Engines (Recon)£14,000 - £22,000((supply only))
BMW M8 Rebuilt Engines£14,995 - £23,000((supply only))
BMW M8 Used Engines£8,500 - £15,000((supply only))
BMW M8 Remanufactured Engines£16,000 - £25,000((supply only))
BMW M8 Refurbished Engines£11,000 - £17,500((supply only))
Compare BMW M8 engine prices with vetted UK suppliers
All engine types include a minimum 12-month unlimited mileage warranty when sourced through EngineMarket. Prices are typical UK market ranges based on historical quote data from our network and depend on exact engine code, variant, mileage and supplier. Use our free comparison tool above - enter your registration to get tailored quotes for your specific BMW M8 within hours.
Engine Sizes
BMW M8 Engines by SizeFind the Right Displacement for Your Variant
Every displacement fitted to the BMW M8 is listed below, with compatible engine codes, production years and common failure notes.
The sole displacement powering every BMW M8 variant is the 4.4-litre S63 twin-turbo V8, shared with the F90 M5 and X5M/X6M. Introduced with the M8's June 2019 launch, this hot-vee configuration places the turbochargers inside the engine's V-angle for compact packaging and rapid response - though this design contributes to the thermal management challenges owners should monitor. Output varies by variant, with standard M8 models producing 600PS (591hp) and Competition versions reaching 625PS (617hp) at 6,000rpm.
⚙
Engine Code(s)
S63B44B (standard), S63B44T4 (Competition)
▣
Compatible Models (UK)
M8 Coupe (F92, 2019-2024), M8 Convertible (F91, 2019-2024), M8 Gran Coupe (F93, 2020-2024), M8 Competition all body styles, M8 First Edition, M8 Final Edition
ϟ
Power output
Verified by registration
△
Common Failure Points
Rod bearing wear (55,000-85,000 miles), turbocharger failure on hot-vee units (45,000-75,000 miles), timing chain guide degradation (50,000-90,000 miles), valve stem seal hardening causing oil consumption
Production Years: Check by registration
Compare BMW M8 4.4L petrol engine pricesBMW M8 Engines Fuel Type
BMW M8 Engines by Fuel Type
Choose your BMW M8 engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from the 2019 Coupe to the latest 2025 Final Edition.
BMW M8 Petrol Engines
PetrolThe M8 range uses a single petrol engine family - the S63 twin-turbo V8 - across all variants, body styles and production years from 2019 to 2025.
Common BMW M8 Petrol Engine Families
- •S63B44T4 - Competition variant (617hp), fitted to all M8 Competition, First Edition and Final Edition models
- •S63B44B - standard output (600hp), fitted to base M8 Coupe, Convertible and Gran Coupe
Found In
- •F92 M8 Coupe (2019-2024) - S63B44B and S63B44T4
- •F91 M8 Convertible (2019-2024) - S63B44B and S63B44T4
- •F93 M8 Gran Coupe (2020-2024) - S63B44B and S63B44T4
Known For
- •Exceptionally high performance with 600-617hp from a 4.4L hot-vee twin-turbo V8
- •Rod bearing wear between 55,000-85,000 miles - the most common replacement trigger
- •High thermal load leading to turbocharger and cooling system failures
Typical Petrol Models
- •M8 Coupe
- •M8 Convertible
- •M8 Gran Coupe
BMW M8 Petrol Engines
PetrolThe M8 range uses a single petrol engine family - the S63 twin-turbo V8 - across all variants, body styles and production years from 2019 to 2025.
Common BMW M8 Petrol Engine Families
- •S63B44T4 - Competition variant (617hp), fitted to all M8 Competition, First Edition and Final Edition models
- •S63B44B - standard output (600hp), fitted to base M8 Coupe, Convertible and Gran Coupe
Found In
- •F92 M8 Coupe (2019-2024) - S63B44B and S63B44T4
- •F91 M8 Convertible (2019-2024) - S63B44B and S63B44T4
- •F93 M8 Gran Coupe (2020-2024) - S63B44B and S63B44T4
Known For
- •Exceptionally high performance with 600-617hp from a 4.4L hot-vee twin-turbo V8
- •Rod bearing wear between 55,000-85,000 miles - the most common replacement trigger
- •High thermal load leading to turbocharger and cooling system failures
Typical Petrol Models
- •M8 Coupe
- •M8 Convertible
- •M8 Gran Coupe
Not sure which fuel type your BMW M8 has- Enter your registration number above to instantly identify your engine code, fuel system and compatible replacement options - all backed by a minimum 12-month unlimited mileage warranty from UK BMW M8 specialists.
Engine YearsGet quotes for 2019-2020 BMW M8 replacement engines →
BMW M8 Engines by YearWhat Was Fitted & WhenBMW M8 Engines by Year - What Was Fitted & When
This section covers all major engine changes across the BMW M8 production timeline from 2019 to present, organised so owners can quickly identify their engine and compare rebuilt engine prices from UK specialists.
⚙Key Changes
- ✓June 2019: M8 Coupe (F92) and Convertible (F91) launched with Competition variant available from day one
- ✓October 2019: Gran Coupe (F93) four-door bodystyle added to lineup
- ✓December 2019: First M8 Competition models reach UK customers
- ✓Single engine across all variants: 4.4L S63 twin-turbo V8
▣Main Engines
S63B44T4- 4.4L Petrol (Competition, 617hp / 625PS)
S63B44B- 4.4L Petrol (standard M8, 600hp / 591PS)
▰Popular Models
- •BMW M8 Competition Coupe
- •BMW M8 Competition Convertible
- •BMW M8 Coupe
- •BMW M8 Convertible
- •BMW M8 Gran Coupe
🔧Known For
- ✓The most powerful BMW M car ever produced at launch with 617hp
- ✓Hot-vee turbo configuration creates exceptional response but high thermal load
- ✓First BMW M car to launch with Competition variant as a standard offering
- ✓Shared S63 engine with F90 M5 - proven but maintenance-intensive powertrain
Engine Codes Covered:
S63B44T4S63B44BNot sure which year your BMW M8 was built- Enter your registration number and we'll identify the exact engine, model year, and compatible replacement options instantly - all backed by a minimum 12-month warranty from UK BMW M8 specialists.
FAQ