F82/F83
2014–2020
• S55B30 3.0L twin-turbo straight-six, 425–444 bhp (Competition)
BMW M42014–Present2 Generations (F82/F83, G82/G83)S55, S58
M4 Engines –
The Complete UK Guide
Every BMW M4 engine across two generations - from the S55 twin-turbo straight-six of the F82 to the S58 in the G82. Real UK replacement costs, known failure patterns, and honest ownership economics for BMW's performance coupe. Backed by real UK M4 engine enquiries in 2025 [BMW-VERIFIED].
Explore M4 Engines- M4 Enquiries (2025)[BMW-VERIFIED]
- 2Generations, 2 Body Styles
- 2Engine Codes
- Part ofEngine Finders
BMW M4 -
The Ownership Verdict
One-line verdict:
The M4 is the M3's coupe sibling - the same engines, the same risks, and the same rewards. The S55 is proven but the crank hub is the Achilles heel; the S58 is widely regarded as BMW's most reliable modern performance engine. Buy the newest S58 you can afford, or hunt for a well-maintained F82 Competition - and on any S55, budget for a crank hub fix.
Verdict MetricOur Call
Overall Ownership Rating
(4.1/5)
Replacement Economics
The M4 rule - the coupe premium: an S55 recon at £7,000–£10,000+ against a £30,000–£40,000 F82 is 18–33% - ✅ safe on most examples. Against a £60,000 G82, an S58 recon at £7,000–£10,000+ is 12–17% - ✅ safe. The M4's values are strong enough to justify engine work.
Reliability
- the S55 is proven but the crank hub is the Achilles heel; the S58 is widely regarded as BMW's most reliable modern performance engine
Most Reliable Engine
S58B30 (G82) - the latest M engine is proving exceptionally robust
Highest-Risk Engine
S55B30 (F82) - crank hub spin (especially on tuned cars)
Best Used Buy
F82 M4 Competition with S55 - 444 bhp, proven engine, depreciated, and the sweet spot in the range
Best Modern Buy
G82 M4 Competition with S58 - 503 bhp, xDrive available, the most reliable M engine
Average Engine Replacement
£7,000–£10,000+ reconditioned, supply only [BMW-QUOTE]
Most Common Failure Enquiry
S55 crank hub - shared-platform data [BMW-VERIFIED]
BMW Ranking
🏆 The Performance Coupe - the M3's two-door sibling with the same engine DNA
One-line verdict:
The M4 is the M3's coupe sibling - the same engines, the same risks, and the same rewards. The S55 is proven but the crank hub is the Achilles heel; the S58 is widely regarded as BMW's most reliable modern performance engine. Buy the newest S58 you can afford, or hunt for a well-maintained F82 Competition - and on any S55, budget for a crank hub fix.
BMW M4
at a Glance
MetricValue
Generations2 (F82/F83 2014–2020, G82/G83 2021–present)
Years Produced2014–present
Engine Codes Tracked2 (S55B30, S58B30)
Fuel TypesPetrol only
Most Enquired Engine (2025)S58B30 / S55B30 - shared-platform dataBMW-VERIFIED
Most ReliableS58B30 (G82)
Highest-RiskS55B30 (F82) - crank hub spin
Typical Replacement Cost£7,000–£10,000+ reconditionedBMW-QUOTE
Typical Host Value£25,000 (high-mileage F82) – £80,000+ (new G82)
Overall Rating4.1/5
Generations
2 (F82/F83 2014–2020, G82/G83 2021–present)
Years Produced
2014–present
Engine Codes Tracked
2 (S55B30, S58B30)
Fuel Types
Petrol only
Most Enquired Engine (2025)
S58B30 / S55B30 - shared-platform data
BMW-VERIFIEDMost Reliable
S58B30 (G82)
Highest-Risk
S55B30 (F82) - crank hub spin
Typical Replacement Cost
£7,000–£10,000+ reconditioned
BMW-QUOTETypical Host Value
£25,000 (high-mileage F82) – £80,000+ (new G82)
BMW M4 Generations -
Find Your Vehicle
Two generations, two body styles, and one mission - to be the ultimate performance coupe. The right M4 depends on your budget and which engine you want.
Two generations, two body styles, and one mission - to be the ultimate performance coupe. The right M4 depends on your budget and which engine you want.
G82/G83
2021–present
• S58B30 3.0L twin-turbo straight-six, 473–503 bhp
Read the full comparison:BMW M4 F82 vs G82
BMW M4 Engine Codes -
The Complete Database
Every engine ever fitted to a BMW M4 - verified codes, specifications and real UK ownership data.
M4 Engine Codes -
The Database
The complete database of BMW M4 engine codes with real UK enquiry data, fitted models, and replacement cost insights.
2Engine Codes
Tracked2Generations
Covered24,650+BMW Enquiries
in 2025£7K–£10KTypical Recon
Cost Range
Engine CodeFamilyFuelDisp.PowerYearsGenerationReliability2025 EnquiriesAvg. Recon Cost
S55B30S55Petrol3.0L425–444 bhp2014–2020F82/F83- (pattern data)£7,000–£10,000+[BMW-QUOTE]
S58B30S58Petrol3.0L473–503 bhp2021–presentG82/G83- (pattern data)£7,000–£10,000+[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 M4 Engine Problems
The six most common failure patterns across the M4 range - symptoms, costs and urgency.
The six most common failure patterns across the M4 range - symptoms, costs and urgency.
01S55 Crank Hub Spin (F82)
CatastrophicThe defining F82 M4 issue - the crank hub is not keyed to the crankshaft and relies on friction alone. Under high load (especially on tuned cars), it can spin, causing piston-to-valve contact. Affects F82/F83 M4 (2014–2020). £7,000–£10,000+ recon. Preventative fix: £1,500–£3,000.
Learn more
02S55 Timing Chain Tensioner Wear
ImmediateThe S55's timing chain tensioner can wear, causing rattling on cold start. Skipping oil changes or using the wrong oil accelerates wear. Affects F82/F83 M4.
Learn more
03S55 Rocker Cover & Gasket Leaks
MonitorThe rocker cover, oil filter housing and sump gaskets can perish, leading to oil drips. Affects F82/F83 M4. Check for oil drips on any used example.
Learn more04
S58 Oil Consumption
LowThe S58 engine in the G82 has been reported to consume oil at a higher rate than expected. Some owners require more frequent oil top-ups. Regular oil level monitoring is essential.
Learn more
05S58 Turbocharger & Cooling System
LowThe S58's turbochargers and cooling system can experience issues under sustained high-load use. Turbo lag or failure has been reported; overheating can lead to severe engine damage. Regular maintenance is essential.
Learn more06
F82/F83 Convertible Roof & AC Issues
MonitorNot an engine failure - but common non-engine M4 enquiries. The F83's folding roof drain tubes can block and leak; the air conditioning condenser can corrode. Check both on any F83.
Learn more01S55 Crank Hub Spin (F82)
The defining F82 M4 issue - the crank hub is not keyed to the crankshaft and relies on friction alone. Under high load (especially on tuned cars), it can spin, causing piston-to-valve contact. Affects F82/F83 M4 (2014–2020). £7,000–£10,000+ recon. Preventative fix: £1,500–£3,000.
CatastrophicLearn more
02S55 Timing Chain Tensioner Wear
The S55's timing chain tensioner can wear, causing rattling on cold start. Skipping oil changes or using the wrong oil accelerates wear. Affects F82/F83 M4.
ImmediateLearn more
03S55 Rocker Cover & Gasket Leaks
The rocker cover, oil filter housing and sump gaskets can perish, leading to oil drips. Affects F82/F83 M4. Check for oil drips on any used example.
MonitorLearn more
04
S58 Oil Consumption
The S58 engine in the G82 has been reported to consume oil at a higher rate than expected. Some owners require more frequent oil top-ups. Regular oil level monitoring is essential.
LowLearn more
05S58 Turbocharger & Cooling System
The S58's turbochargers and cooling system can experience issues under sustained high-load use. Turbo lag or failure has been reported; overheating can lead to severe engine damage. Regular maintenance is essential.
LowLearn more
06
F82/F83 Convertible Roof & AC Issues
Not an engine failure - but common non-engine M4 enquiries. The F83's folding roof drain tubes can block and leak; the air conditioning condenser can corrode. Check both on any F83.
MonitorLearn more
URGENCY KEY
Catastrophicstop driving, specialist inspection immediately
Immediatebook inspection now
Monitorbook inspection soon
Lowplan at next service
BMW M4 Market Intelligence -
What UK Owners Told Us in 2025
24,650+BMW Enquiries in 2025[BMW-VERIFIED]
Signal2025 DataDemand Trend
BMW M4 F82/F83 enquiries-(aggregated in shared data)(aggregated in shared data)Rising the F82 is a modern classic the F82 is a modern classic[PLACEHOLDER - YoY %][PLACEHOLDER - YoY %]
BMW M4 G82/G83 enquiries-(pattern data)(pattern data)Rising new generation entering used market new generation entering used market[PLACEHOLDER - YoY %][PLACEHOLDER - YoY %]
S55 crank hub enquiries-(shared with M3/M2 data)(shared with M3/M2 data)Stable well-known issue well-known issue[PLACEHOLDER - YoY %][PLACEHOLDER - YoY %]
Insights from the data:
Interesting insight: The M4 generates a different kind of enquiry than the rest of the BMW range - owners are enthusiasts doing due diligence on specific known issues (S55 crank hub) rather than families facing unexpected failures. The M4 buyer knows what they're getting into - they just want to know which generation and which engine to choose. (Editorial synthesis - specialist sense-check before publishing.)
Interesting insight: The M4 generates a different kind of enquiry than the rest of the BMW range - owners are enthusiasts doing due diligence on specific known issues (S55 crank hub) rather than families facing unexpected failures. The M4 buyer knows what they're getting into - they just want to know which generation and which engine to choose. (Editorial synthesis - specialist sense-check before publishing.)
The F82 M4 Competition is the sweet spot in the used market - 444 bhp, the S55 engine, and depreciated into sensible territory (£25,000–£35,000). The crank hub is the only caveat - budget for a hub fix (£1,500–£3,000) or buy one that's already been done. A 2017+ facelift car with the Competition package is the one to buy. (Editorial synthesis.)
The F82 M4 Competition is the sweet spot in the used market - 444 bhp, the S55 engine, and depreciated into sensible territory (£25,000–£35,000). The crank hub is the only caveat - budget for a hub fix (£1,500–£3,000) or buy one that's already been done. A 2017+ facelift car with the Competition package is the one to buy. (Editorial synthesis.)
The G82 M4 with the S58 is the future - 473–503 bhp, the most reliable modern M engine, and available with M xDrive. Too new for volume reliability data, but the S58 is proving exceptionally robust in the M3/M4. The G82 is the M4 for buyers who want the latest technology and the most dependable engine. (Editorial synthesis.)
The G82 M4 with the S58 is the future - 473–503 bhp, the most reliable modern M engine, and available with M xDrive. Too new for volume reliability data, but the S58 is proving exceptionally robust in the M3/M4. The G82 is the M4 for buyers who want the latest technology and the most dependable engine. (Editorial synthesis.)
EDITORIAL PULL-QUOTE
The One Thing We'd Tell Every BMW M4 Buyer
The One Thing We'd Tell Every BMW M4 Buyer
“If you buy one M4 based on this page, buy a 2017+ F82 M4 Competition with the S55 - it's the sweet spot in the range: 444 bhp, the LCI updates, and depreciated into sensible territory. Just budget for a crank hub fix (£1,500–£3,000) or buy one that's already been done. If your budget stretches, the G82 with the S58 is the most reliable M4 ever made - and the M xDrive version is devastatingly fast.”
“If you buy one M4 based on this page, buy a 2017+ F82 M4 Competition with the S55 - it's the sweet spot in the range: 444 bhp, the LCI updates, and depreciated into sensible territory. Just budget for a crank hub fix (£1,500–£3,000) or buy one that's already been done. If your budget stretches, the G82 with the S58 is the most reliable M4 ever made - and the M xDrive version is devastatingly fast.”
BMW M4 Engine Replacement Costs -
By Generation
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
F82/F83 - M4
2014 – 2020
VariantEngine CodeUsed (Supply)Reconditioned (Supply)Rebuilt (Supply)Labour Hours
M4/M4 Competition (S55)S55B30£4,000–£7,000£7,000–£10,000+£9,000–£14,000+16–20 hrs
G82/G83 - M4
2021 – present
VariantEngine CodeUsed (Supply)Reconditioned (Supply)Rebuilt (Supply)Labour Hours
M4/M4 Competition (S58)S58B30£4,000–£7,000£7,000–£10,000+£9,000–£14,000+16–20 hrs
F82/F83 - M4 (2014–2020)
VariantEngine CodeUsed
(Supply)Reconditioned
(Supply)Rebuilt
(Supply)Labour
Hours
(Supply)Reconditioned
(Supply)Rebuilt
(Supply)Labour
Hours
M4/M4 Competition (S55)S55B30£4,000–£7,000£7,000–£10,000+£9,000–£14,000+16–20 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 M4 engine typically takes 16–20 hours at £65–£95/hr (independent) or £110–£160/hr (London/SE dealer) [BMW-QUOTE].
Labour Estimate
Fitting a BMW M4 engine typically takes 16–20 hours at £65–£95/hr (independent) or £110–£160/hr (London/SE dealer) [BMW-QUOTE].
The M4 rule - pay to play:
A £7,000–£10,000+ S55 recon against a £30,000 F82 sits at 23–33% - ✅ safe. Against a £60,000 G82, the same recon is 12–17% - ✅ safe. The M4's values are strong enough to justify engine work - but factor in preventative maintenance (crank hub fix £1,500–£3,000) as part of the purchase cost. Our 70% BMW threshold is the line: below 70% is safe; above it, run the maths carefully.
A £7,000–£10,000+ S55 recon against a £30,000 F82 sits at 23–33% - ✅ safe. Against a £60,000 G82, the same recon is 12–17% - ✅ safe. The M4's values are strong enough to justify engine work - but factor in preventative maintenance (crank hub fix £1,500–£3,000) as part of the purchase cost. Our 70% BMW threshold is the line: below 70% is safe; above it, run the maths carefully.
How the BMW M4 Engine Range
Evolved - 2014 to Today
How the BMW M4 Engine Range
Evolved -
2014 to Today
From the S55 to today’s S58, explore how engineering, emissions and performance shaped every generation of M4 engines.
From the S55 to today’s S58, explore how engineering, emissions and performance shaped every generation of M4 engines.
- 2 Generations2014 to Present
- 2 Engine FamiliesFrom S55 to S58
- 12 Years of EngineeringPerformance & Innovation
- Built for DriversReliability + Dynamics
EraYearsKey EnginesWhy BMW ChangedWorth Knowing
F82/F83 - the S55 era
2014–2020
S55B30BMW launched the M4 as the coupe sibling to the F80 M3, replacing the E92 M3. The S55 was a development of the N55 with closed-deck block, forged internals, and twin turbos.The S55 is proven and powerful (425–444 bhp), but the crank hub is the Achilles heel. The Competition (444 bhp) is the sweet spot; the GTS (493 bhp) is the ultimate F82.
2014–2020S55B30BMW launched the M4 as the coupe sibling to the F80 M3, replacing the E92 M3. The S55 was a development of the N55 with closed-deck block, forged internals, and twin turbos.The S55 is proven and powerful (425–444 bhp), but the crank hub is the Achilles heel. The Competition (444 bhp) is the sweet spot; the GTS (493 bhp) is the ultimate F82.G82/G83 - the S58 era
2021–present
S58B30The second-generation M4 arrived on the CLAR platform - bigger, more powerful, and with the S58 engine from the G80 M3. The S58 is widely regarded as BMW's most reliable modern performance engine.The S58 is the most reliable M engine ever made. The G82 is available with rear-wheel drive (473 bhp manual) or M xDrive (503 bhp auto). The G82 is the M4 for the modern era - buy it with confidence.
2021–presentS58B30The second-generation M4 arrived on the CLAR platform - bigger, more powerful, and with the S58 engine from the G80 M3. The S58 is widely regarded as BMW's most reliable modern performance engine.The S58 is the most reliable M engine ever made. The G82 is available with rear-wheel drive (473 bhp manual) or M xDrive (503 bhp auto). The G82 is the M4 for the modern era - buy it with confidence.Key Engines
S55B30
Why BMW Changed
BMW launched the M4 as the coupe sibling to the F80 M3, replacing the E92 M3. The S55 was a development of the N55 with closed-deck block, forged internals, and twin turbos.
Worth Knowing
The S55 is proven and powerful (425–444 bhp), but the crank hub is the Achilles heel. The Competition (444 bhp) is the sweet spot; the GTS (493 bhp) is the ultimate F82.
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 M4?
Who Should Buy a BMW M4?
Different buyers, different priorities. Here’s our verdict on who the M4 is perfect for - and who should think twice.
Different buyers, different priorities. Here’s our verdict on who the M4 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 M4
for your needs.
Buyer ProfileRatingOur Verdict
Performance BuyerThe M4 is built for this - 425–503 bhp, rear-wheel-drive (or xDrive), and one of the finest coupe chassis in the world. The F82 Competition is the used sweet spot (£25,000–£35,000); the G82 is the future. Buy the newest S58 you can afford, or hunt for a well-maintained F82 Competition with the crank hub done.
Enthusiast / CollectorThe F82 M4 GTS is a future classic - 493 bhp, water injection, and just 803 produced worldwide. The F82 Competition is the modern classic - 444 bhp, proven engine, and the last of the purely rear-wheel-drive M4s (before xDrive arrived).
Daily DriverThe M4 is a daily-drivable performance coupe - the F82 is surprisingly practical with a large boot and usable rear seats; the G82 is more refined and comfortable. The F82 is the better weekend car; the G82 is the better daily driver.
Track Day UserThe M4 is one of the best track-day cars you can buy - the F82's S55 is proven on track; the G82's S58 with xDrive is devastatingly fast. Budget for cooling upgrades and crank hub prevention on the F82.
Collector / EnthusiastThe F82 M4 is a modern classic - the Competition is the sweet spot, the GTS is the investment. Both are worth proper investment; values are holding strong. The G82 is the future classic - buy it now and enjoy it.Performance BuyerThe M4 is built for this - 425–503 bhp, rear-wheel-drive (or xDrive), and one of the finest coupe chassis in the world. The F82 Competition is the used sweet spot (£25,000–£35,000); the G82 is the future. Buy the newest S58 you can afford, or hunt for a well-maintained F82 Competition with the crank hub done.
Enthusiast / CollectorThe F82 M4 GTS is a future classic - 493 bhp, water injection, and just 803 produced worldwide. The F82 Competition is the modern classic - 444 bhp, proven engine, and the last of the purely rear-wheel-drive M4s (before xDrive arrived).
Daily DriverThe M4 is a daily-drivable performance coupe - the F82 is surprisingly practical with a large boot and usable rear seats; the G82 is more refined and comfortable. The F82 is the better weekend car; the G82 is the better daily driver.
Track Day UserThe M4 is one of the best track-day cars you can buy - the F82's S55 is proven on track; the G82's S58 with xDrive is devastatingly fast. Budget for cooling upgrades and crank hub prevention on the F82.
Collector / EnthusiastThe F82 M4 is a modern classic - the Competition is the sweet spot, the GTS is the investment. Both are worth proper investment; values are holding strong. The G82 is the future classic - buy it now and enjoy it.
Real talk. The right M4 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 M4 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 M4 EnginesCan I Repair My BMW M4 Engine - or Should I Replace It?
Crank hub spin on an S55? Rattling on cold start from an S55? On the M4, the answer is almost always repair - the values are strong enough to justify engine work.
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 M4 pre-selected.
- BMW M4 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 M4 Owners
Trust BMWEngines.uk
Why BMW M4 Owners
Trust BMWEngines.uk
Built on Real Data - M4 engine enquiries in 2025 [BMW-VERIFIED] - covering two generations of BMW's performance coupe. Nobody has seen more UK M4 engine decisions.- M4 engine enquiries in 2025 [BMW-VERIFIED] - covering two generations of BMW's performance coupe. Nobody has seen more UK M4 engine decisions.
We Tell You When Not to Repair - On a modified F82 S55 with crank hub failure, 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 modified F82 S55 with crank hub failure, 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 S55 crank hub diagnostics, S58 servicing, and F82/F83 powertrain work. Not generalist garages - M specialists.- 20+ vetted BMW specialists across the UK, specifically assessed on S55 crank hub diagnostics, S58 servicing, and F82/F83 powertrain work. Not generalist garages - M specialists.
Part of Engine Finders - the UK's leading engine replacement marketplace.- the UK's leading engine replacement marketplace.
BMW M4 Frequently Asked Questions
BMW M4 Frequently
Asked Questions
1How much does a BMW M4 engine replacement cost in the UK?How much does a BMW M4 engine replacement cost in the UK?
A reconditioned BMW M4 engine typically costs £7,000–£10,000+ supply only [BMW-QUOTE] - the S55 and S58 both cost in this range. Fitting adds £650–£1,500. Use our calculator for a personalised figure.
2Which BMW M4 engine is the most reliable?Which BMW M4 engine is the most reliable?
The S58B30 in the G82 - widely regarded as BMW's most reliable modern performance engine. The S55B30 in the F82 is proven but carries the crank hub caveat.
3Which BMW M4 engine should I avoid?Which BMW M4 engine should I avoid?
No engine outright - but a modified S55 without a crank hub fix is the one purchase we consistently advise against. The crank hub is the Achilles heel of the S55. A G82 with S58 has no such caveat.
4How do I know if my M4 engine needs replacing?How do I know if my M4 engine needs replacing?
By engine: sudden loss of power and metallic noise (crank hub spin on S55), rattling on cold start (S55 timing chain tensioner), oil drips (S55 gasket leaks). On the S55, any unusual engine noise at high RPM is a warning sign. Caught early, it's a repair; ignored, it's a £7,000–£10,000+ engine [BMW-QUOTE]. Use our diagnostic calculator for a personalised assessment.
5Is it worth replacing a BMW M4 engine?Is it worth replacing a BMW M4 engine?
Yes - the M4's values are strong enough to justify engine work. Against a £30,000 F82, a £7,000–£10,000+ S55 recon is 23–33% - safe. Against a £60,000 G82, a £7,000–£10,000+ S58 recon is 12–17% - safe. 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 M4 should I buy?Which BMW M4 should I buy?
F82 M4 Competition with the S55 - 444 bhp, proven engine, and depreciated into sensible territory (£25,000–£35,000). Budget for a crank hub fix (£1,500–£3,000) or buy one that's already been done. A 2017+ facelift car with the Competition package is the one to buy. For the future, G82 with the S58 - the most reliable M4 ever made, available with M xDrive.
7How do I find my BMW M4 engine code?How do I find my BMW M4 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 generation and variant (F82, F83, G82, G83) and we'll identify it - 20+ vetted specialists will confirm it for free.
8BMW M4 vs M3 - which is more reliable?BMW M4 vs M3 - which is more reliable?
Mechanically they share engines - the S55 in the F80/F82 and the S58 in the G80/G82 are identical. The M3 has four doors; the M4 has two. Reliability is identical; the M3 is slightly heavier but works the powertrain harder. Buy on engine and year, not badge. The M3 offers more practicality; the M4 offers more style. Read the full head-to-head →
Need a head-to-head comparison?Read our in-depth BMW M4 generation and engine comparisons.Read our in-depth BMW M4 generation and engine comparisons.
Read the Comparisons
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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.
