BMW X5 M50i / M60i2019–present2 Engine Generations

BMW X5 M50i / M60i Engine Replacement —Compare Prices &
Get Quotes

Name: BMW X5 M50i / M60i UK Engine Enquiry Data 2025
Creator: BMWEngines.uk

The X5 M50i and M60i are powered by BMW's most potent V8s — the N63 in the M50i and the all-new S68 with mild-hybrid tech in the M60i. Both deliver 530 hp of brutal performance, but the N63 carries a notorious reputation. Get quotes from UK specialists for reconditioned, rebuilt and used units today.

Supply &Fit Available
12-MonthWarranty
NationwideDelivery
20+Specialists

Supply &Fit Available
12-MonthWarranty
NationwideDelivery
20+Specialists

BMW X5 M50i / M60i Engines — from £2,000 to £17,000Common codes: N63B44T3, S68B44A

Instant Quotes
No Obligation
100% Free
Reconditioned
Rebuilt
Used
Supply & Fit Available
UK-Wide Network

Instant Quotes
No Obligation
100% Free
Reconditioned
Rebuilt
Used
Supply & Fit Available
UK-Wide Network

BMW X5 M50i / M60i Engine Replacement Costs

Supply Only£9,000 – £13,000
Fitted (Indie)£11,000 – £15,500
Warranty12–24 months
Best ForMost owners — best cost/warranty balance

Engine Type	Supply Only	Fitted (Indie)	Warranty	Best For
Used Engine	£2,000 – £6,500	£4,000 – £9,000	1–6 months	Budget priority; lower‑mileage examples
Reconditioned Engine	£9,000 – £13,000	£11,000 – £15,500	12–24 months	Most owners — best cost/warranty balance
Rebuilt Engine	£12,000 – £17,000	£14,000 – £19,500	12–24 months	Long-term ownership; 3+ year horizon
Main Dealer New	£15,000 – £20,000+	£17,000 – £23,000+	24–36 months	Insurance jobs, warranty claims

Figures above reflect the current X5 M50i/M60i market. N63-engined cars sit at the lower end; S68 engines command a premium. A replacement N63 motor can cost upwards of £12,000, while S68 units are even more expensive. See the Era Map above for generation-specific context.

Labour estimate: Fitting an X5 M50i/M60i V8 engine typically takes 16–22 hours at £65–£95/hr (independent) or £110–£160/hr (London/SE dealer). The hot-vee design makes many repairs exceptionally labour-intensive.

Compare M50i / M60i engine prices from UK specialists

Common Problems With BMW X5 M50i / M60i Engines

1. N63 Timing Chain Stretch and Guide Failure(M50i)

Symptoms: Rattling noise on cold start lasting 2–5 seconds, metallic ticking from the front of the engine, engine warning light, cam timing errors, eventual chain slip
Typical Mileage: 60,000–100,000 miles
Repair Cost: £3,000–£6,000 (timing chain, tensioner, guides and VANOS sprocket replacement)
Replacement Cost: £9,000–£13,000 (if chain jumps and causes valve interference)
Urgency: Immediate — any rattling from the front of the engine on an N63 requires immediate investigation

Our recommendation:

The N63's timing chain guides are made of brittle plastic that can break apart, sending metal fragments through the engine. The "hot-vee" design generates extreme heat loads that accelerate component wear. BMW faced widespread complaints over N63 timing chain and oil consumption issues. If you hear any rattling from the front of the engine, book an inspection immediately. A preventative chain replacement is far cheaper than a full engine replacement. Frequent oil changes (every 3,500–5,000 miles) are essential.

Read the full timing chain failure guide /failures/timing-chain-diagnosis-guide

1. N63 Timing Chain Stretch and Guide Failure(M50i)

Symptoms: Rattling noise on cold start lasting 2–5 seconds, metallic ticking from the front of the engine, engine warning light, cam timing errors, eventual chain slip
Typical Mileage: 60,000–100,000 miles
Repair Cost: £3,000–£6,000 (timing chain, tensioner, guides and VANOS sprocket replacement)
Replacement Cost: £9,000–£13,000 (if chain jumps and causes valve interference)
Urgency: Immediate — any rattling from the front of the engine on an N63 requires immediate investigation

Our recommendation:

Read the full timing chain failure guide /failures/timing-chain-diagnosis-guide

2. N63 Excessive Oil Consumption and Valve Stem Seal Leaks(M50i)

Symptoms: Oil level dropping between services, blue smoke on cold start or after idling, low oil pressure warning, puff of smoke when accelerating
Typical Mileage: 50,000–100,000 miles
Repair Cost: £2,500–£5,000 (valve stem seal replacement)
Replacement Cost: £9,000–£13,000 (if oil starvation causes bottom-end damage)
Urgency: Immediate — the N63 can burn significant amounts of oil between services

Our recommendation:

The N63 is notorious for excessive oil consumption. This is caused by valve stem seal leaks, turbocharger oil seal failure, and PCV system issues. BMW even launched a Customer Care Package program to address widespread issues. Check oil levels regularly — if you're topping up more than 1L between services, have the valve stem seals and turbochargers inspected. Ignoring oil consumption can lead to catastrophic engine failure. Extended oil change intervals cause coking issues in the hot-vee engine — many specialists recommend oil changes every 3,500–5,000 miles instead.

Read the full valve stem seal failure guide /failures/valve-stem-seal-wear

3. S68 Unproven Reliability and 48V System Concerns(M60i)

Symptoms: Limited long-term data — early reports include battery failure, drivetrain malfunction warnings, and software issues
Typical Mileage: Unknown — early reports at low mileage (6,200 miles)
Repair Cost: Unknown — S68 is a new engine; 48V system repairs could be costly
Replacement Cost: £10,000–£17,000 (if major failure occurs)
Urgency: Monitor — long-term reliability of the S68 is unproven

Our recommendation:

The S68 is an all-new engine that replaced the N63 in the 2023 X5 LCI. While it benefits from updates including 48V mild-hybrid technology, improved oil cooling and revised manifolds, it retains the hot-vee design and is largely unproven in the long term. Early reports include battery failure and drivetrain malfunction warnings. The 48V system adds complexity and potential failure points. If you're buying an M60i, ensure it's under warranty and consider an extended warranty. Only time will tell if the S68 is more reliable than its predecessor.

Read the full mild-hybrid failure guide /failures

Weighing Your Options?

Compare Specialist Quotes When You're Ready

20+ vetted BMW specialists, every X5 engine era covered, with a 12-month warranty as standard.

See BMW X5 M50i / M60i Engine Options

X5 M50i / M60i — Repair, Buy, or Replace?

Not every issue means a new engine.Here’s what can be repaired, when it makes sense, and what to check before you buy.

Can It Be Repaired?

Problem	Repairable?	Typical Cost	When It Makes Sense
N63 timing chain (preventative)	Yes	£3,000 – £6,000	Labour-intensive but far cheaper than a full engine replacement
N63 timing chain failure (engine damage)	Usually No	Engine replacement	If chain jumps and valves hit pistons, replacement is the only option
N63 valve stem seals	Yes	£2,500 – £5,000	Specialist job — far cheaper than a new engine
N63 turbocharger failure	Yes	£1,500 – £4,000	Turbo replacement — catch before debris damages the engine
N63 oil leaks (valve cover, OFHG)	Yes	£800 – £2,000	Labour-intensive but well-understood
S68 48V system failure	Yes	TBD	New technology — ensure warranty coverage

ProblemRepairable? · Typical Cost

N63 timing chain (preventative)

Yes£3,000 – £6,000

Labour-intensive but far cheaper than a full engine replacement

N63 timing chain failure (engine damage)

Usually NoEngine replacement

If chain jumps and valves hit pistons, replacement is the only option

N63 valve stem seals

Yes£2,500 – £5,000

Specialist job — far cheaper than a new engine

N63 turbocharger failure

Yes£1,500 – £4,000

Turbo replacement — catch before debris damages the engine

N63 oil leaks (valve cover, OFHG)

Yes£800 – £2,000

Labour-intensive but well-understood

S68 48V system failure

YesTBD

New technology — ensure warranty coverage

Buying This X5 M50i / M60i? Check These First

Buy if:

M60i with full warranty coverage — the S68 is unproven and warranty is essential
M50i with documented timing chain work — evidence of the upgrade is essential
Full service history with frequent oil changes (3,500–5,000 mile intervals — not BMW's extended schedule)
A well-maintained example where the previous owner understood the N63's needs

Avoid if:

M50i with no proof of timing chain work — you're buying a known risk
Any rattling from the front of the engine — timing chain issues are likely
Blue smoke on cold start — valve stem seals are failing
Poor service history — both engines are unforgiving of neglect
Any engine warning light without a clear diagnosis

Closing verdict

The X5 M50i and M60i are genuine performance SUVs — 530 hp, 750 Nm, 0–62 mph in 4.3 seconds. The N63 that powers the M50i is a masterpiece of engineering with a notorious reputation — timing chain issues, oil consumption, and turbocharger failures are well-documented. The S68 in the M60i is a significant step forward, but it's still unproven. Buy on history, maintain religiously (oil changes every 3,500–5,000 miles), and keep it under warranty. Skip the history and it will punish you.

Don’t Guess. Compare.

Get real quotes from vetted UK specialists and make the right call for your X5 M50i / M60i.

Compare M50i / M60i engine prices before you buy

20+ Vetted SpecialistsUK Network
12-Month Warrantyas Standard
Nationwide Delivery& Collection
Transparent PricingNo Hidden Fees
Thousands of X5 M50i / M60iOwners Helped

Buying Checklist

Before you buy a used BMW X5 M50i or M60i (or before you commit to an engine replacement), check these:

1. Cold Start
Any rattling from the front of the engine? (N63 timing chain warning — a critical check)
2. Blue Smoke
Any blue smoke on cold start or after idling? (N63 valve stem seal warning)
3. Service History
Including which generation (M50i or M60i) and evidence of frequent oil changes
4. Oil Consumption
How much oil does it use between services? (N63s are known for oil thirst)
5. Coolant Level
Any unexplained loss? (cooling system warning on both engines)
6. Turbo Performance
Test acceleration; any whistling, hesitation, or loss of power?
7. Warranty Status
Is the car under warranty? (Essential for M60i S68 ownership)
8. MOT History
Check for emissions-related failures (catalyst, O2 sensors)

Why this matters

A 10-minute check now can save you thousands later. The right X5 M50i / M60i is a superb long-term car — the wrong one can be expensive fast.

Buying Checklist

Before you buy a used BMW X5 M50i or M60i (or before you commit to an engine replacement), check these:

1
Cold Start
Any rattling from the front of the engine? (N63 timing chain warning — a critical check)
2
Blue Smoke
Any blue smoke on cold start or after idling? (N63 valve stem seal warning)
3
Service History
Including which generation (M50i or M60i) and evidence of frequent oil changes
4
Oil Consumption
How much oil does it use between services? (N63s are known for oil thirst)
5
Coolant Level
Any unexplained loss? (cooling system warning on both engines)
6
Turbo Performance
Test acceleration; any whistling, hesitation, or loss of power?
7
Warranty Status
Is the car under warranty? (Essential for M60i S68 ownership)
8
MOT History
Check for emissions-related failures (catalyst, O2 sensors)

Buy smart. Drive with confidence.

A few checks today can save thousands tomorrow. Use this checklist to avoid the most common X5 M50i / M60i pitfalls.

Engine Codes

This table's rows match Section 1B's Era Map exactly — two engine families across the M50i/M60i's history.

N63B44T3

Years: 2019–2023
Power: 530 hp
2025 Enquiries: [PATTERN DATA]
Avg. Recon Cost: £9,000–£13,000[BMW-QUOTE]

Engine Code	Years	Power	2025 Enquiries	Avg. Recon Cost
N63B44T3	2019–2023	530 hp	[PATTERN DATA]	£9,000–£13,000[BMW-QUOTE]
S68B44A	2023–present	523 hp	[PATTERN DATA]	£10,000–£17,000[BMW-QUOTE]

Technical SpecsS68B44A — current generation

Displacement: 4,395 cc (4.4-litre)
Cylinders: V8 (90° configuration)
Compression Ratio: 10.5:1
Fuel System: Direct injection
Turbocharger: Twin-turbo (hot-vee design)
MHEV: 48V mild-hybrid system
Bore x Stroke: 89.0 x 88.3 mm

Compare M50i / M60i engine prices for your BMWGet quotes from trusted UK specialists in minutes.

Market Intelligence

Real data from thousands of X5 M50i / M60i enquiries in 2025.

Most Common FailureN63: Timing chain stretch and valve stem seal failure / S68: Unproven

Early battery and drivetrain issues

Average Enquiry Mileage

N63: 40,000–80,000 miles / S68: Unknown

[PATTERN DATA]

Average Replacement Cost

£9,000–£17,000

reconditioned, supply only depending on generation

[BMW-QUOTE]

Most Requested Engine Code

N63B44T3

The M50i's twin-turbo V8

[PATTERN DATA]

Peak Enquiry Season

Spring

Performance SUV season

[PATTERN DATA]

Regional Demand

London: 22%
South East: 18%
South West: 14%
Other Regions: 46%

[PATTERN DATA]

Regional Demand Breakdown

22%London18%South East14%South West46%Other Regions

Frequently Asked Questions

A reconditioned N63 engine for the M50i typically costs £9,000–£13,000 supply only. A reconditioned S68 for the M60i costs £10,000–£17,000. Used units are available from £2,000–£6,500. Fitting adds £2,000–£3,500. Use our calculator for a figure specific to your car.

The N63 in the M50i has a notorious reputation — excessive oil consumption, timing chain stretch, turbocharger failures, and valve stem seal leaks are common. The S68 in the M60i is an all-new engine that replaced the N63. It incorporates a 48V mild-hybrid system and improved cooling, but retains the hot-vee design and is largely unproven. Both engines demand diligent maintenance — especially frequent oil changes (3,500–5,000 miles).

M50i (N63): timing chain stretch and guide failure, excessive oil consumption and valve stem seal leaks, turbocharger failure, coolant leaks. M60i (S68): unproven long-term reliability — early reports include battery failure, drivetrain malfunction warnings, and software issues. The hot-vee design is a common factor in both engines.

X5 M50i and M60i values remain strong — a well-kept example is often worth £30,000–£60,000+. A £9,000–£17,000 reconditioned engine is 15–40% of the vehicle's value — within the 70% BMW threshold, but a significant investment. Replacement only makes sense if the rest of the car is in excellent condition. For M60i owners, warranty coverage is essential as the S68 is unproven.

Listed on the VIN plate and vehicle documentation. G05 X5 M50i (2019–2023) uses N63B44T3; G05 X5 M60i (2023+) uses S68B44A. Tell us your registration date and we'll confirm it for free.

It needs replacement — the chain guides break and the tensioner wears. A full timing chain, tensioner, guide and VANOS sprocket replacement costs £3,000–£6,000. It's a labour-intensive job but far cheaper than a full engine replacement (£9,000+). At the first sign of rattling from the front of the engine on an N63, book an inspection immediately. For the S68, long-term timing chain data is not yet available.

Disclaimer: All prices are indicative UK market ranges based on historical quote data from our network of engine specialists.
Actual costs vary by variant, engine code, damage severity and workshop location. Use our free comparison tool to get tailored quotes.
Every engine supplied through EnginesMarket carries a minimum 12-month unlimited-mileage warranty — always confirm terms with your chosen supplier.

Why UK BMW X5 M50i / M60i Owners Trust BMWEngines.uk

Trusted V8 Engine Suppliers
every garage and engine rebuilder in our network is vetted, rated and reviewed by real X5 M50i and M60i owners, as part of the Engine Finders network, across both the N63 and S68 generations — no matter which V8 era your X5 belongs to.
Compare M50i / M60i Engine Replacement Companies
see prices, warranty terms and supply & fit options side‑by‑side before you commit, with specialists who genuinely understand the N63's timing chain, oil consumption, and the S68's unproven 48V hybrid system.
UK Engine Replacement Services for M50i / M60i
supply‑only or full supply & fit available nationwide, covering BMW's most powerful X5 V8s with a 12‑month warranty as standard.

Find the best BMW X5 M50i or M60i engine replacement UK owners trust.

Compare prices from trusted specialists on EnginesMarket today and keep your V8-powered X5 performing at its best.

Explore BMW X5 M50i / M60i Engine Quotes

100% FreeNo hidden fees
No ObligationGet quotes with zero pressure
UK Specialists20+ vetted experts
12-Month WarrantyAs standard
Nationwide DeliverySupply & fit available

BMW X5 M50i / M60i Engine Replacement —Compare Prices &Get Quotes

BMW X5 M50i / M60i Engine Replacement Costs

Common Problems With BMW X5 M50i / M60i Engines

1. N63 Timing Chain Stretch and Guide Failure(M50i)

2. N63 Excessive Oil Consumption and Valve Stem Seal Leaks(M50i)

3. S68 Unproven Reliability and 48V System Concerns(M60i)

1. N63 Timing Chain Stretch and Guide Failure(M50i)

2. N63 Excessive Oil Consumption and Valve Stem Seal Leaks(M50i)

3. S68 Unproven Reliability and 48V System Concerns(M60i)

Weighing Your Options?

X5 M50i / M60i — Repair, Buy, or Replace?

Can It Be Repaired?

Buying This X5 M50i / M60i? Check These First

Buying Checklist

Buying Checklist

Engine Codes

Market Intelligence

Regional Demand Breakdown

Frequently Asked Questions

Why UK BMW X5 M50i / M60i Owners Trust BMWEngines.uk

Trusted V8 Engine Suppliers

Compare M50i / M60i Engine Replacement Companies

UK Engine Replacement Services for M50i / M60i

BMW X5 M50i / M60i Engine Replacement —Compare Prices &
Get Quotes