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BMW N74B60 Engine - Replacement Cost, Problems & CompatibilityProblems & Compatibility
The BMW N74B60 is the 6.0-litre twin-turbo V12 that powered the F01/F02 760i, G11/G12 760i and the E70/E71 X5/X6 M-performance variants between 2010 and 2022 - reconditioned units from approximately £8,000-£12,000, with specialist demand from owners of BMW’s flagship V12 models.
Supply & Fit Available
12-Month Warranty
Nationwide Delivery
100+ Suppliers
Used from
£4,000
Reconditioned from
£8,000
Rebuilt from
£12,000
GB
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Key Specs
BMW N74B60 - Specifications at a Glance
Engine Code
N74B60 (N74B60A, N74B60B variants)
Fuel
Petrol
Configuration
6.0L V12, twin-twin-scroll turbochargers, DOHC 48-valve, Double VANOS, Valvetronic
Power Output(s)
536-544 hp (400-405 kW); 553 lb-ft (750 Nm)
Years Produced
2010-2022
UK Models Fitted
3 BMW model families - full list in Compatibility below
2025 UK Replacement Requests
Replaced
[N73B60 - LINK PENDING - page not in current inventory]
Replaced By
[S68 - LINK PENDING - page not in current inventory]
Most Common Failure
Turbocharger coolant lines / ignition coil failure
Reconditioned Price Range
£8,000-£12,000 supply-only
Vetted UK specialists for N74B60 replacements
Minimum 12-month warranty on reconditioned and rebuilt options
Fitted To
Which BMW Models Use the N74B60-
**TAG:** Fitted To
| Model | Generation/Chassis | Badge(s) | Years | Link |
|---|---|---|---|---|
 BMW 7 Series | F01/F02 | 760i / 760Li (544 hp) | 2010-2015 | |
| BMW 7 Series | G11/G12 | 760i / 760Li (535-544 hp) | 2016-2022 | |
| BMW X5 | E70 | X5 M (M-division S63) - not N74 | - | |
| BMW X6 | E71 | X6 M (M-division S63) - not N74 | - | |
| BMW X7 | G07 | X7 M60i (uses N74- Actually uses S68 V8, not N74) | - |
02
BMW 7 Series
03
BMW X5
04
BMW X6
05
BMW X7
CROSS-BRAND
N74B60 is documented across 5 BMW applications spanning BMW 7 Series, BMW X5, BMW X6, BMW X7. Registration lookup confirms the exact suffix before quotes are sent.
Not sure which engine your car has?
Not sure which engine your car has- Enter your registration above - we'll confirm your exact N74B60 fitment before any quotes are sent.
Prices
BMW N74B60 Engine Replacement Cost (UK)
Condition | Supply Only | Fitted (Independent Specialist) | Typical Warranty |
|---|---|---|---|
Used | £4,000-£7,000 | £5,300-£8,700 | 3-6 months |
Reconditioned | £8,000-£12,000 | £9,300-£13,700 | 12-24 months |
Rebuilt | £12,000-£18,000 | £13,300-£19,700 | 12-24 months |
All figures . Fitted = supply price + labour band below.
Labour Guide
Fitting an N74B60 typically takes 20-28 hours at £65-£91/hr (independent V12 specialist) - confirm exact labour when comparing quotes.
Price Factors
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Common Problems
BMW N74B60 Engine Problems - What Actually Fails
Every engine has its weak points. Here are the known issues with the N74B60, based on real-world data and verified failure patterns.
Verified issue focus: Turbocharger coolant lines / ignition coil failure.
1. Turbocharger Coolant Lines - Heat-Related Leaks
1. Turbocharger Coolant Lines - Heat-Related Leaks
Typical onset:
60,000-100,000 miles
What happens:
The N74's hot-vee layout places the turbos inside the V of the engine, generating extreme heat. The plastic coolant lines around the turbos become brittle and crack, leading to coolant loss. This is a well-known issue on both the 6.0L and 6.6L N74 variants. If coolant loss is ignored, the engine can overheat and cause head gasket failure.
Repair vs replace:
If caught early, replacing the coolant lines is a labour-intensive but manageable repair (£1,000-£2,000). If the engine has overheated, head gasket failure is likely - in which case a full replacement is often more cost-effective. Read our full cooling system failure guide
Read more about this issue
2. Ignition Coil Failure - Misfires on V12
2. Ignition Coil Failure - Misfires on V12
Typical onset:
40,000-80,000 miles
What happens:
The N74's ignition coils are mounted under the intake manifold and are exposed to engine heat. They can fail, causing misfires, rough running, and check-engine lights. On a V12, coil failure on one cylinder is noticeable and can lead to limp mode.
Repair vs replace:
Coil replacement is a straightforward job (£300-£600 for all 12 coils) and does not require engine removal. However, accessing the coils requires removing the intake manifold, which adds labour. Read our full ignition coil failure guide
Read more about this issue
3. Injector & Fuel System Issues - High-Pressure Pump Wear
3. Injector & Fuel System Issues - High-Pressure Pump Wear
Typical onset:
60,000-100,000 miles
What happens:
The N74 uses a high-pressure direct injection system. Injectors can become clogged or leak, and the high-pressure fuel pump can wear over time. Symptoms include rough idle, hesitation, and fuel smell.
Repair vs replace:
Injector replacement is a specialist job (£1,000-£2,000). Fuel pump replacement is also costly (£1,500-£3,000). If these issues are coupled with other problems, many owners opt for a reconditioned unit.
Read more about this issue
Compare rebuilt N74B60 prices with the failures already addressed
Engine Variants
N74B60 Sub-Codes Explained - Which One Is in Your Car-
The N74B60 was produced in two main variants across the 7-Series generations: the N74B60A (F-series) and the N74B60B (G-series). The differences are significant when buying a replacement. - Fitted to: F01/F02 760i / 760Li (2010-2015) - Key technical difference: 544 hp, 553 lb-ft, earlier DME (engine management) version, different turbocharger actuators, 12-valve ignition system design - Sub-code-specific failure note: Shares the family coolant line and coil failure patterns; early production (2010-2012) had more frequent turbo coolant line issues - Interchange note: Not a straight swap with the N74B60B - ECU, wiring, turbo control and fuel system differ. Requires full electronics transplant if swapping between generations - Fitted to: G11/G12 760i / 760Li (2016-2022) - Key technical difference: Revised ECU calibration, updated turbocharger actuator design, improved cooling system routing, 535-544 hp depending on emissions calibration - Sub-code-specific failure note: Improved coolant line materials but still shares the family ignition coil failure pattern; less prone to turbo coolant leaks than earlier A variant - Interchange note: Not a straight swap with earlier N74B60A - ECU, wiring and cooling system architecture differ. Use the correct variant for your chassis
How to confirm your code: The engine code is stamped on a metal plate on the left-hand side of the block, near the timing cover. The V5C logbook lists the full engine number (the first 7 characters identify the variant). For G-series models, the engine number will indicate the B variant. Enter your registration above and we'll confirm your exact variant before any quotes are sent.
Easily Confused
N73B60
LINK PENDING - page not in current inventory] - the naturally aspirated 6.0-litre V12 that preceded the N74 family in the E65/E66 760i and E66 760Li. Produced 445 hp without forced induction - a completely different character from the N74's twin-turbo torque delivery.
Alternative / Next-Gen Code
S68
LINK PENDING - page not in current inventory] - BMW's new V8 with mild-hybrid assistance that replaced the V12 in the 7-Series line-up from 2023 onwards. The N74 was BMW's last production V12.
Confirm the exact N74B60 fitment
How to confirm your code: The engine code is stamped on a metal plate on the left-hand side of the block, near the timing cover. The V5C logbook lists the full engine number (the first 7 characters identify the variant). For G-series models, the engine number will indicate the B variant. Enter your registration above and we'll confirm your exact variant before any quotes are sent.
Buying Guide
Buying a Replacement N74B60 - What to Choose
Choosing the right replacement route depends on your budget, risk tolerance, and ownership goals. Here's a breakdown of your options.
Used:
A used N74B60 is a risky proposition unless it comes from a very low-mileage car with full documented history. The V12's complexity means many used engines have hidden issues (coolant leaks, coil failures, turbo wear). Only consider a used unit with proof of recent cooling system work and coil replacement. Factor in £2,000-£4,000 for preventative work if the history is unclear. Link once: /services/used-engines
Reconditioned:
A proper N74B60 recon is the only sensible choice for owners of high-value 7-Series V12s. A quality recon should include: full strip and inspection, new coolant lines and water pumps, refurbished turbochargers, new ignition coils and injectors, new gaskets and seals, and a full test. With a 12-24 month warranty, this gives you a fresh engine with all known weaknesses engineered out - well worth the £8,000-£12,000 supply cost for a flagship BMW. Link once: /services/reconditioned-engines
Rebuilt:
A full rebuild is justified when the original engine has suffered catastrophic failure (overheating, oil starvation) and the car is a cherished example (especially low-mileage G-series models). An upgraded rebuild should include new pistons/rings, refreshed cylinder heads, new timing chains and guides, and a full cooling system overhaul. This is specialist territory and typically only makes sense for cars with strong residual value (£30,000+). Link once: /services/rebuilt-engines
Supply & Fit Line:
All engines can be supplied and fitted through our network of vetted BMW V12 specialists nationwide, with 12-month warranty on reconditioned and rebuilt units. Link once: /services/supply-and-fit
Vehicle Value Note:
The N74B60 sits in F01/G11 760i - cars worth £10,000-£50,000 depending on age and condition. With a reconditioned supply cost of £8,000-£12,000, replacement is viable on higher-value examples. However, for a high-mileage F01 760i worth under £10,000, a used unit (£4,000-£7,000) may be the only sensible option - and even then, evaluate whether the car's overall condition justifies the spend. Given the V12's specialist nature, many owners choose to break the car rather than replace the engine if the value is low.
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Related Engines
Engines Related to the BMW N74B60
Explore engines that are closely related to the BMW N74B60, including its predecessor, successor, and key family variants.
Predecessor
N73B60
LINK PENDING - page not in current inventory] - the naturally aspirated 6.0-litre V12 that preceded the N74 family in the E65/E66 760i and E66 760Li. Produced 445 hp without forced induction - a completely different character from the N74's twin-turbo torque delivery.
Successor
S68
LINK PENDING - page not in current inventory] - BMW's new V8 with mild-hybrid assistance that replaced the V12 in the 7-Series line-up from 2023 onwards. The N74 was BMW's last production V12.
FAQ
BMW N74B60Frequently Asked Questions
Question 1How much does a BMW N74B60 engine replacement cost-
A reconditioned N74B60 supply-only costs approximately £8,000-£12,000, with fitted prices ranging from £9,300 to £13,700 depending on labour rates. Used units start at £4,000-£7,000, and full rebuilds run from £12,000-£18,000. Prices are supply-only; fitting adds 20-28 hours at independent V12 specialist rates. Warranty varies: 3-6 months on used, 12-24 months on reconditioned and rebuilt.
- Prices are supply-only; fitting adds 20-28 hours at independent V12 specialist rates.
- Warranty varies: 3-6 months on used, 12-24 months on reconditioned and rebuilt.
Question 2What are the most common failures on the N74B60-
The most documented issues are turbocharger coolant line leaks (plastic lines cracking under heat), ignition coil failure (misfires on the V12), and high-pressure fuel pump/injector issues. The hot-vee design creates extreme heat that degrades plastic components and ignition coils over time. Coolant lines: replacement is strongly advised at 60k-100k miles. Ignition coils: failure is common; all 12 coils should be checked periodically. Fuel system: injectors and pump can wear, causing rough idle and hesitation.
- Coolant lines: replacement is strongly advised at 60k-100k miles.
- Ignition coils: failure is common; all 12 coils should be checked periodically.
- Fuel system: injectors and pump can wear, causing rough idle and hesitation.
Question 3Which BMW models use the N74B60 engine-
The N74B60 was fitted exclusively to 7-Series models: F01/F02 760i/760Li (2010-2015, 544 hp) and G11/G12 760i/760Li (2016-2022, 535-544 hp). Not to be confused with the N73 (naturally aspirated predecessor) or the N74B66 (Rolls-Royce 6.6L). The N74B60 is BMW's last production V12 - the S68 V8 hybrid has replaced it.
- Not to be confused with the N73 (naturally aspirated predecessor) or the N74B66 (Rolls-Royce 6.6L).
- The N74B60 is BMW's last production V12 - the S68 V8 hybrid has replaced it.
Question 4Should I buy a used or reconditioned N74B60 engine-
A used N74B60 is risky unless it comes from a very low-mileage car with full documented history and proof of recent cooling system work. The V12's complexity means many used engines have hidden issues. A reconditioned engine is strongly recommended - it includes new coolant lines, refurbished turbos, new coils and injectors, with a 12-24 month warranty. Used is cheaper (£4k-£7k) but factor in £2k-£4k for preventative work. Reconditioned addresses all known weak points and gives peace of mind.
- Used: cheaper (£4k-£7k) but factor in £2k-£4k for preventative work.
- Reconditioned: addresses all known weak points and gives peace of mind.
Question 5How do I confirm which N74B60 variant my car has-
Check the engine code stamped on the block (left-hand side near the timing cover). The N74B60A (F-series, 2010-2015) uses the earlier DME and turbo actuator design. The N74B60B (G-series, 2016-2022) has updated software and improved cooling. The V5C logbook lists the full engine number. Variants are not interchangeable without full electronics transplant. ECU, wiring and cooling system differ between generations.
- Variants are not interchangeable without full electronics transplant.
- ECU, wiring and cooling system differ between generations.
Question 6How long does an N74B60 engine typically last-
With meticulous maintenance and early preventative work, these engines can exceed 100,000-150,000 miles. The V12 is fundamentally well-engineered; the limiting factors are the plastic cooling components, ignition coils and fuel system components. Coolant line replacement recommended at 60k-80k miles as preventative. Ignition coil replacement at 60k-80k miles. Regular oil changes (5,000-8,000 miles) with BMW-spec oil are essential.
- Coolant line replacement recommended at 60k-80k miles as preventative.
- Ignition coil replacement at 60k-80k miles.
- Regular oil changes (5,000-8,000 miles) with BMW-spec oil are essential.
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Compare free, no-obligation quotes from our network of pre-vetted BMW V12 specialists. Every quote is specific to your exact N74B60 variant (A or B), and our reg-lookup tool confirms correct fitment before any quote is sent. With reconditioned N74B60 units available from approximately £8,000, comparing takes two minutes and could save you thousands on your flagship BMW V12 replacement.
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