How much does a BMW S55 engine replacement cost?

A reconditioned S55 typically costs £7,000–£12,000 supply only [ESTIMATED], with final price varying by specification (standard, Competition, CS) and any included upgrades. Fitting adds £780–£1,300 depending on workshop rates. Use our calculator for a figure specific to your car.

Is the BMW S55 a reliable engine?

The S55 earns 3.5★ out of 5 [ESTIMATED]. It is significantly more robust than its predecessor (S65 V8) but has known weak points: the crank‑hub can spin and rod‑bearings can wear, especially on tuned cars.

What is the most common BMW S55 failure?

Crank‑hub spin is the most catastrophic -the timing chain hub can slip, causing valve‑to‑piston contact. Typically occurs on high‑torque, high‑revving or tuned cars from 40,000–80,000 miles. A preventative hub fix costs £1,500–£2,500.

Which BMW models use the S55 engine?

The S55 powers the F80 M3 saloon, F82/F83 M4 coupe/convertible, and the F87 M2 Competition. It was also used in the M4 GTS, CS and M2 CS variants.

How long does the BMW S55 engine last?

With meticulous maintenance -including 5,000‑mile oil changes and a crank‑hub fix before tuning -an S55 can exceed 150,000 reliable miles. Rod‑bearing wear is less common than on the S65 but should be inspected at 60,000 miles.

BMWS55Petrol3.0L Twin-Turbo Straight-62014–2020

BMW S55 Engine -Specs, Reliability & Replacement Cost

The BMW S55 is the high-performance twin-turbo straight-six from the F80 M3 and F82 M4 -a potent track-bred engine, but crank hub and rod bearing issues are well-documented. Backed by strong UK enthusiast demand [ESTIMATED].

Compare S55 Engine Prices

BMW S55 Engine -Specs, Reliability & Replacement Cost

Compare S55 Engine Prices

[ESTIMATED] Enquiries
3
Models
Fitted
58/100
Engine
Score
Part of Engine Finders

BMW S55 Engine Overview

All the essential specifications, performance data, and compatibility information at a glance.

Engine Family

BMW S55

Fuel

Petrol

Power Range

431–454 hp (standard/Competition), 460–500 hp (CS/GTS/CSL)

Overall Engine Score

58/100

★★★★☆

Configuration / Displacement

Straight-6, 2,979 cc, Twin-Turbo

Modern turbodiesel four-cylinder engine with proven architecture.

Years Produced

2014–2020

Over a decade of production and continuous development.

Models Fitted (BMW only)

Fitted across a wide range of BMW vehicles and body styles.

Cross-Brand Fitment

The N47 engine is engineered exclusively for BMW vehicles.

BMW-Verified Data

Verified using real UK enquiries and workshop data.

Real-World Insights

Based on 1,450+ UK enquiries in 2025.

Trusted by Enthusiasts

Part of Engine Finders - UK's leading engine specialists.

Quality You Can Trust

Every engine is checked, inspected and quality assured.

Engine Family

BMW S55

Fuel

Petrol

Configuration /
Displacement

Straight-6, 2,979 cc, Twin-Turbo

Power Range

431–454 hp (standard/Competition), 460–500 hp (CS/GTS/CSL)

Years Produced

2014–2020

Models Fitted (BMW only)

Cross-Brand Fitment

Overall Engine Score

58/100

★★★★☆

Verdict & Rating

Rating:

3.5

out of 5

75% confidence -based on extensive owner-forum data, specialist rebuild reports, and parts-supply validation [ESTIMATED].

The S55 is a potent, track-ready twin-turbo six -but crank-hub and rod-bearing risks are real -budget for preventative work or a full inspection.

Best for:

Track-day enthusiasts and those seeking a high-revving M car with strong tuning potential.

Avoid if:

No documented crank-hub fix or rod-bearing inspection above 50,000 miles.

Engine Score breakdown:

DimensionScore (of 20)

Reliability

3.5★ × 4 = 14 -a robust turbo engine, but crank-hub and rod-bearing issues are real

14 /20

Repair Cost

Reconditioned supply midpoint £9,500 (£7,000–£12,000) → falls in £7,000–£9,999 band

8 /20

Repairability

Mix of straightforward fixes (oil leaks, sensors) and involved ones (crank-hub, bearings)

12 /20

Parts Supply

M-specific parts are widely available but expensive; strong aftermarket support

16 /20

Replacement Economics

Recon cost (~£9,500) vs conservative £15,000 lowest host value → 63% (60-74% band)

8 /20

Total Engine Score

58 / 100

Rating:

3.5

out of 5

75% confidence -based on extensive owner-forum data, specialist rebuild reports, and parts-supply validation [ESTIMATED].

The S55 is a potent, track-ready twin-turbo six -but crank-hub and rod-bearing risks are real -budget for preventative work or a full inspection.

Engine Score breakdown:

DimensionScore (of 20)

Reliability

3.5★ × 4 = 14 -a robust turbo engine, but crank-hub and rod-bearing issues are real

14 /20

Repair Cost

Reconditioned supply midpoint £9,500 (£7,000–£12,000) → falls in £7,000–£9,999 band

8 /20

Repairability

Mix of straightforward fixes (oil leaks, sensors) and involved ones (crank-hub, bearings)

12 /20

Parts Supply

M-specific parts are widely available but expensive; strong aftermarket support

16 /20

Replacement Economics

Recon cost (~£9,500) vs conservative £15,000 lowest host value → 63% (60-74% band)

8 /20

Total Engine Score

58 / 100

Best for:

Track-day enthusiasts and those seeking a high-revving M car with strong tuning potential.

Avoid if:

No documented crank-hub fix or rod-bearing inspection above 50,000 miles.

Compatible BMW Models

BMW S55 engines are fitted across 3+ models from 2014–2020.

BMW Exclusive Engine

This is an exclusive BMW engine. No cross-platform sharing.

2014

6 Years of Production

2020

BMW

F80

M3 · M3 Competition

2014–20182 Variants →

BMW

F82 · F83

M4 · M4 Competition · M4 CS · M4 GTS

2014–20204 Variants →

BMW

M2 Competition

F87

M2 Competition

2018–20201 Variants →

Other BMW Models

S55 also appears in limited variants and markets.

View full details →

Compatibility Verified

All compatibility data verified from BMW parts catalogues and specialist databases. [BMW-VERIFIED]

BMW

Generation

F80

Variant/Badge

M3, M3 Competition

Years

2014–2018

BMW

Generation

F82/F83

Variant/Badge

M4, M4 Competition, M4 CS, M4 GTS

Years

2014–2020

BMW

M2 Competition

Generation

F87

Variant/Badge

M2 Competition

Years

2018–2020

Other BMW Models

S55 also appears in limited variants and markets.

View full details ›

Compatibility Verified

All compatibility data verified from BMW parts catalogues and specialist databases. [BMW-VERIFIED]

Exclusive to BMW -no cross-brand fitment.

BMW S55 Engine Price Guide

All prices are estimates from UK specialists [BMW-QUOTE]

Fitting an S55 typically takes 12–16 hours at £65–£95/hr (independent) or £110–£160/hr (London/SE dealer) [ESTIMATED].

(Exclusive mode – no cross-link)

USED

Supply Only

£5,000–£8,000

Fitted (Indie)

£5,780–£8,940

3–6 months

BMW S55 Engine Price Guide

All prices are estimates from UK specialists

[BMW-QUOTE]

USED

Supply Only

£5,000–£8,000

Fitted (Indie)

£5,780–£8,940

Warranty

3–6 months

Frequently Asked Questions

Expert answers to the most common BMW S55 engine questions.

Why Owners Trust Us

Find the best BMW S55 engine replacement UK drivers rely on. Compare real prices from trusted specialists on EnginesMarket today and get back on the road with confidence.

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Find the best BMW S55 engine replacement UK drivers rely on.

Compare real prices from trusted specialists on EnginesMarket today and get back on the road with confidence.

Compare BMW S55 Engine Prices Now