How much does a BMW S63/S65 engine replacement cost?

A reconditioned S63 or S65 typically costs £6,000–£10,000 supply only [BMW-QUOTE], varying by engine and condition. Fitting adds £2,000–£5,000 depending on labour rates. Use our calculator for a figure specific to your car.

Is the BMW S63/S65 a reliable engine?

The S63 and S65 are fundamentally strong M engines with forged internals, but both have well-documented weaknesses: the S65 suffers from rod-bearing wear, and the S63's hot-vee turbo layout leads to oil leaks and coolant line failures. Reliability depends on proactive maintenance.

What is the most common BMW S63/S65 failure?

For the S65, rod-bearing wear is the most critical failure -typically occurring between 60,000–100,000 miles. For the S63, the hot-vee design causes valve-stem seal wear, turbo coolant line leaks, and oil consumption. Both are expensive to rectify.

Which BMW models use the S63/S65?

The S65 powers the E90/E92/E93 M3 (2007–2013). The S63 (twin-turbo 4.4L) appears in the F10 M5, F12/F13 M6, E70/F85 X5M, and E71/F86 X6M.

How long does the BMW S63/S65 last?

With meticulous maintenance, these engines can reach 120,000–150,000 miles. However, the cost of a full rebuild (£9,000+) often exceeds the value of many older hosts, so preventative repairs (rod bearings, timing components) are essential.

BMW S63 / S65 Engine -Specs, Reliability & Replacement Cost

The BMW S63 and S65 are BMW M's high-performance V8 engines -ferociously powerful but with well-documented expensive failure modes. Backed by real UK specialist enquiries [ESTIMATED].

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BMW S63 / S65 Engine -Specs, Reliability & Replacement Cost

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BMW S63 / S65 Engine Overview

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

Engine Family

BMW S63 / S65

Fuel

Petrol (Twin-Turbo / Naturally Aspirated)

Power Range

414–617+ hp

BMW-VERIFIED

Overall Engine Score

48/100

★★★★☆

Configuration / Displacement

V8, 4.0L (S65) / 4.4L (S63)

Modern turbodiesel four-cylinder engine with proven architecture.

Years Produced

2007–present

Over a decade of production and continuous development.

Models Fitted (BMW only)

M3 (E90/E92), M5, M6, X5M, X6M

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 S63 / S65

Fuel

Petrol (Twin-Turbo / Naturally Aspirated)

Configuration /
Displacement

V8, 4.0L (S65) / 4.4L (S63)

Power Range

414–617+ hp

BMW-VERIFIED

Years Produced

2007–present

Models Fitted (BMW only)

M3 (E90/E92), M5, M6, X5M, X6M

Cross-Brand Fitment

Overall Engine Score

48/100

★★★★☆

Verdict & Rating

Rating:

out of 5

85% confidence -based on specialist workshop consensus and documented failure patterns.

The S63 and S65 M V8s are thrilling but expensive to maintain -rod bearings, hot-vee issues, and timing components all demand deep pockets -buy only with meticulous history and an inspection.

Best for:

Enthusiasts who can afford M-level running costs and want a genuine high-performance V8 experience.

Avoid if:

You're on a budget or cannot absorb £5,000+ in unexpected repairs.

Engine Score breakdown:

DimensionScore (of 20)

Reliability

3★ × 4 = 12

12 /20

Repair Cost

Reconditioned midpoint ~£8,000 – falls in £7,000–£9,999 bracket → 8

8 /20

Repairability

Some failures are manageable, others (rod bearings) are catastrophic

12 /20

Parts Supply

M-specific parts available but expensive; some S65 parts becoming scarce

12 /20

Replacement Economics

Reconditioned cost often exceeds 75% of lowest host-vehicle value → 4

4 /20

Total Engine Score

48 / 100

Rating:

out of 5

85% confidence -based on specialist workshop consensus and documented failure patterns.

The S63 and S65 M V8s are thrilling but expensive to maintain -rod bearings, hot-vee issues, and timing components all demand deep pockets -buy only with meticulous history and an inspection.

Engine Score breakdown:

DimensionScore (of 20)

Reliability

3★ × 4 = 12

12 /20

Repair Cost

Reconditioned midpoint ~£8,000 – falls in £7,000–£9,999 bracket → 8

8 /20

Repairability

Some failures are manageable, others (rod bearings) are catastrophic

12 /20

Parts Supply

M-specific parts available but expensive; some S65 parts becoming scarce

12 /20

Replacement Economics

Reconditioned cost often exceeds 75% of lowest host-vehicle value → 4

4 /20

Total Engine Score

48 / 100

Best for:

Enthusiasts who can afford M-level running costs and want a genuine high-performance V8 experience.

Avoid if:

You're on a budget or cannot absorb £5,000+ in unexpected repairs.

Compatible BMW Models

BMW S63 / S65 engines are fitted across M3 (E90/E92), M5, M6, X5M, X6M from 2007–2019.

BMW Exclusive Engine

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

2007

12 Years of Production

2019

Engine

BMW M3

E90/E92/E93

M3 (S65B40)1 Variants →

2007–2013

S65 4.0L V8

BMW M5

F101 Variants →

(S63B44)

2011–2016

S63 4.4L V8 TT

BMW M51 Variants →

F90

M5 (S63B44TÜ)

2017–present

S63 4.4L V8 TT1 Variants →

BMW

F12 · F13

M6 (S63B44)

2012–20181 Variants →

S63

4.4L V8 TT

BMW X5M

E70

X5M (S63B44)1 Variants →

2009–2013

S63 4.4L V8 TT

BMW X5M

F851 Variants →

X5M

(S63B44TÜ)

2014–2018

S63 4.4L V8 TT

BMW X6M1 Variants →

E71

X6M (S63B44)

2009–2014

S63 4.4L V8 TT1 Variants →

BMW

X6M

F86

X6M (S63B44TÜ)

2014–20191 Variants →

Other BMW Models

S63 / S65 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]

Engine

Generation

BMW M3

Variant/Badge

E90/E92/E93

Years

M3 (S65B40)

2007–2013

Generation

S65 4.0L V8

Variant/Badge

BMW M5

Years

F10

(S63B44)

Generation

2011–2016

Variant/Badge

S63 4.4L V8 TT

Years

BMW M5

F90

Generation

M5 (S63B44TÜ)

Variant/Badge

2017–present

Years

S63 4.4L V8 TT

BMW

Generation

F12/F13

Variant/Badge

M6 (S63B44)

Years

2012–2018

S63

4.4L V8 TT

Generation

BMW X5M

Variant/Badge

E70

Years

X5M (S63B44)

2009–2013

Generation

S63 4.4L V8 TT

Variant/Badge

BMW X5M

Years

F85

X5M

(S63B44TÜ)

Generation

2014–2018

Variant/Badge

S63 4.4L V8 TT

Years

BMW X6M

E71

Generation

X6M (S63B44)

Variant/Badge

2009–2014

Years

S63 4.4L V8 TT

BMW

X6M

Generation

F86

Variant/Badge

X6M (S63B44TÜ)

Years

2014–2019

Other BMW Models

S63 / S65 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 mode – no cross-link)

BMW S63 / S65 Engine Price Guide

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

Fitting an S63/S65 typically takes 16–24 hours at £75–£110/hr (independent M specialist) or £130–£180/hr (London/SE dealer) [BMW-QUOTE].

(Exclusive mode – no cross-link)

USED (S65)

Supply Only

£3,000–£5,000

Fitted (Indie)

£4,500–£7,500

3–6 months

USED (S63)

Supply Only

£5,000–£8,000

Fitted (Indie)

£7,000–£10,500

3–6 months

BMW S63 / S65 Engine Price Guide

All prices are estimates from UK specialists

[BMW-QUOTE]

USED (S65)

Supply Only

£3,000–£5,000

Fitted (Indie)

£4,500–£7,500

Warranty

3–6 months

USED (S63)

Supply Only

£5,000–£8,000

Fitted (Indie)

£7,000–£10,500

Warranty

3–6 months

Frequently Asked Questions

Expert answers to the most common BMW S63 / S65 engine questions.

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Trusted Suppliers -Every garage and engine rebuilder in our network is vetted, rated and reviewed by real BMW M owners, as part of the Engine Finders network.

Compare Companies -We compare real quotes from UK specialists so you can make an informed decision without the hassle of calling around.

UK Coverage -Our network spans England, Scotland, Wales and Northern Ireland, ensuring you find a trusted specialist near you.

Find the best BMW S63 / S65 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 S63/S65 Engine Prices Now