01
BMW N47D20D Engine - Replacement Cost, Problems & CompatibilityProblems & Compatibility
The 2.0-litre diesel engine fitted to F-generation BMW models (such as the 320d and 1 Series), offering refined efficiency over earlier N47 revisions. Reconditioned units start from £3,200 , and the broader N47 family generated 1,450 UK replacement requests in 2025 .
Supply & Fit Available
12-Month Warranty
Nationwide Delivery
100+ Suppliers
Used from
£1,800
Reconditioned from
£3,200
Rebuilt from
£4,500
GB
Secure enquiry - no spam.
Quotes only from vetted UK engine specialists.
Key Specs
BMW N47D20D - Specifications at a Glance
Engine Code
N47D20D
Fuel
Diesel
Configuration
2.0L inline-4, single turbo
Power Output(s)
184 hp - 190 hp (depending on specific tune)
Years Produced
2011-2015
UK Models Fitted
4+ BMW models - full list in Compatibility below
2025 UK Replacement Requests
1,450
Replaced
N47D20C
Replaced By
B47D20A
Most Common Failure
Rear timing chain stretch and tensioner wear
Reconditioned Price Range
£3,200-£5,500 supply-only
Vetted UK specialists for N47D20D replacements
Minimum 12-month warranty on reconditioned and rebuilt options
Fitted To
Which BMW Models Use the N47D20D-
02
BMW 3 Series
03
BMW X1
04
BMW X3
CROSS-BRAND
N47D20D is documented across 4 BMW applications spanning 1 Series, 3 Series, X1, X3. 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 N47D20D fitment before any quotes are sent.
Prices
BMW N47D20D Engine Replacement Cost (UK)
Condition | Supply Only | Fitted (Independent Specialist) | Typical Warranty |
|---|---|---|---|
Used | £1,800-£3,200 | £2,450-£4,110 | 3-6 months |
Reconditioned | £3,200-£5,500 | £3,850-£6,410 | 12-24 months |
Rebuilt | £4,500-£6,500 | £5,150-£7,410 | 12-24 months |
The final cost of a BMW N47D20D engine replacement depends heavily on whether the timing chain and tensioner have already been addressed, as well as the condition of the turbocharger and EGR system. Reconditioned units that include updated chain guides, tensioners, and oil pump components command a slight premium but offer significantly better long-term reliability. For a detailed breakdown of what affects your final bill, see our full reconditioned engine cost guide.
Labour Guide
Fitting a N47D20D typically takes 10-14 hours at £65-£75/hr (independent) - confirm exact labour when comparing quotes.
Price Factors
Ready to compare N47D20D quotes?
Get competitive quotes from trusted UK specialists today.
Common Problems
BMW N47D20D Engine Problems - What Actually Fails
Every engine has its weak points. Here are the known issues with the N47D20D, based on real-world data and verified failure patterns.
Verified issue focus: Rear timing chain stretch and tensioner wear.
1. Timing Chain Stretch and Tensioner Failure - 2011-2015
1. Timing Chain Stretch and Tensioner Failure - 2011-2015
Typical onset:
60,000-120,000 miles
What happens:
The rear-mounted timing chain design is prone to stretch and tensioner wear. Early warning signs include a distinct rattling or scraping noise from the rear of the engine on cold starts. If ignored, the chain can jump a tooth or snap entirely, leading to catastrophic valve and piston damage.
Repair vs replace:
If caught early, a timing chain kit and tensioner replacement (£650-£1,800) is sufficient. However, if the chain has snapped or caused internal mechanical damage, a full N47D20D engine replacement is the only viable option.
Read more about this issue
2. EGR Cooler Leaks and Swirl Flap Wear - 80,000+ miles
2. EGR Cooler Leaks and Swirl Flap Wear - 80,000+ miles
Typical onset:
80,000+ miles
What happens:
The EGR cooler can develop internal micro-fractures, allowing coolant to seep into the intake or exhaust system. This often presents as unexplained coolant loss, white exhaust smoke, or overheating. Additionally, the plastic swirl flaps in the intake manifold can wear or break, leading to reduced performance and persistent engine management light codes.
Repair vs replace:
EGR cooler replacement or system blanking (where legally compliant) is a common fix. If the engine has suffered hydrolock from severe coolant ingress, the block is typically written off, necessitating replacement.
Read more about this issue
While the N47D20D featured minor metallurgical revisions over the earlier N47D20C, it still shares the fundamental rear-chain architecture. Post-2011 units are generally more robust, but the timing chain remains a known wear item requiring proactive monitoring .
Compare rebuilt N47D20D prices with the failure already addressed
Engine Variants
How to Confirm You Have the N47D20D
The N47D20D engine code is stamped directly onto the engine block, typically located on a machined pad near the oil filter housing or on the front timing cover. It is also explicitly listed on your vehicle's V5C registration document under the engine details section, or it can be definitively verified via a VIN decode through a BMW specialist. The N47D20D is frequently confused with the earlier N47D20C or the newer B47D20A. While they share similar physical dimensions and mounting points, fitting the wrong revision can result in ECU mapping conflicts, incompatible turbo plumbing, and different oil filter housing mounts. Always verify the exact code before purchasing a replacement unit.
Not sure- Enter your registration above, and we will confirm your exact N47D20D fitment instantly before any quotes are generated.
Easily Confused
N47D20C
- The earlier iteration of the N47 family, sharing the same rear-mounted timing chain vulnerability but featuring slightly different ECU mapping and minor hardware revisions.
Alternative / Next-Gen Code
B47D20A
- The modular B-Series replacement that moved the timing chain to the front of the engine, largely resolving the catastrophic rear-chain failure risk inherent to the N47 generation.
Confirm the exact N47D20D fitment
Not sure- Enter your registration above, and we will confirm your exact N47D20D fitment instantly before any quotes are generated.
Buying Guide
Buying a Replacement N47D20D - 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 N47D20D is only advisable if it comes with comprehensive, stamped service history proving the timing chain, tensioner, and EGR cooler were replaced preventatively. Without this documentation, the risk of inheriting the same rear-chain failure is too high, especially for higher-mileage examples.
Reconditioned:
A proper reconditioned N47D20D is the most balanced choice for most owners. A reputable rebuild will replace the timing chain kit, tensioner, EGR cooler, and all critical seals with updated parts, directly addressing the engine's most common failure points while restoring factory compression.
Rebuilt:
A full rebuild is justified for low-mileage, high-value F-generation models where you plan to keep the vehicle long-term. An upgraded rebuild should include a revised timing chain setup, upgraded oil pump components, and potentially a remapped ECU to maximise longevity and performance.
Supply & Fit Line:
Sourcing and fitting your N47D20D through our vetted network ensures the work is completed by BMW specialists, backed by a minimum 12-month warranty and nationwide delivery options.
Vehicle Value Note:
For typical host vehicles like the F30 3 Series or F20 1 Series, current market values range from £4,500 to £14,000. A reconditioned N47D20D replacement sits comfortably within this value band for most examples. However, for older, higher-mileage hosts valued under £4,000, the replacement cost may approach or exceed the vehicle's worth, making it essential to evaluate scrap or part-exchange value first.
Compare N47D20D Engine Prices Now
Related Engines
Engines Related to the BMW N47D20D
Explore engines that are closely related to the BMW N47D20D, including its predecessor, successor, and key family variants.
Predecessor
N47D20C
- The earlier iteration of the N47 family, sharing the same rear-mounted timing chain vulnerability but featuring slightly different ECU mapping and minor hardware revisions.
Successor
B47D20A
- The modular B-Series replacement that moved the timing chain to the front of the engine, largely resolving the catastrophic rear-chain failure risk inherent to the N47 generation.
FAQ
BMW N47D20DFrequently Asked Questions
Question 1How much does a BMW N47D20D engine replacement cost-
A reconditioned BMW N47D20D engine typically costs between £3,200 and £5,500 for supply only, with fitted prices ranging from £3,850 to £6,410. Used units start around £1,800 but carry significantly higher reliability risks. Fitted costs generally include 10-14 hours of labour at independent specialist rates. All reputable reconditioned units should include an updated timing chain kit and tensioner as standard.
- Used units start around £1,800 but carry significantly higher reliability risks.
- Fitted costs generally include 10-14 hours of labour at independent specialist rates.
- All reputable reconditioned units should include an updated timing chain kit and tensioner as standard.
Question 2What is the most common problem with the N47D20D engine-
The dominant failure is rear timing chain stretch and tensioner wear, typically occurring between 60,000 and 120,000 miles. Early warning signs include a distinct rattling or scraping noise from the rear of the engine on cold starts. If ignored, the chain can snap, causing catastrophic internal valve and piston damage. A secondary documented issue is EGR cooler leakage, which can lead to unexplained coolant loss.
- Early warning signs include a distinct rattling or scraping noise from the rear of the engine on cold starts.
- If ignored, the chain can snap, causing catastrophic internal valve and piston damage.
- A secondary documented issue is EGR cooler leakage, which can lead to unexplained coolant loss.
Question 3Which BMW models use the N47D20D engine-
The N47D20D was primarily fitted to F-generation BMW models, including the 1 Series (F20), 3 Series (F30), X1 (E84/F48), and X3 (F25) between 2011 and 2015. It commonly powered the 116d, 118d, 120d, 316d, 318d, and 320d badges. Always verify your specific chassis code and engine stamping before ordering a replacement unit.
- It commonly powered the 116d, 118d, 120d, 316d, 318d, and 320d badges.
- Always verify your specific chassis code and engine stamping before ordering a replacement unit.
Question 4Should I buy a used or reconditioned N47D20D engine-
A reconditioned N47D20D is strongly recommended over a used unit due to the known timing chain vulnerabilities of this generation. A proper rebuild will replace the timing chain, tensioner, and EGR cooler with updated parts, directly addressing the root cause of failure. A used engine inherits the exact same wear risks unless it comes with documented, recent preventative maintenance records.
- A proper rebuild will replace the timing chain, tensioner, and EGR cooler with updated parts, directly addressing the root cause of failure.
- A used engine inherits the exact same wear risks unless it comes with documented, recent preventative maintenance records.
Question 5How do I know if my car has the N47D20D engine-
The N47D20D engine code is stamped on a machined pad on the engine block, typically located near the oil filter housing or front timing cover. It is also explicitly listed on your V5C registration document under the engine details section. You can use our free registration lookup tool at the top of this page to confirm your exact engine code instantly before requesting quotes.
- It is also explicitly listed on your V5C registration document under the engine details section.
- You can use our free registration lookup tool at the top of this page to confirm your exact engine code instantly before requesting quotes.
Compare BMW N47D20D Engine Prices Today
Get a free, no-obligation comparison of BMW N47D20D engine prices today. Our network provides quotes specific to your exact code, and our registration lookup confirms your fitment before any quotes are sent. With reconditioned N47D20D units starting from £3,200, comparing takes two minutes and could save you hundreds on your replacement.
Vetted UK Specialists
Vetted UK specialists for N47D20D replacements
Minimum 12-Month Warranty
Minimum 12-month warranty on reconditioned and rebuilt options
Nationwide Delivery
Nationwide delivery plus supply and fit availability
Expert Support
Secure enquiry - no spam. Quotes only from vetted UK engine specialists.
Secure enquiry - no spam. Quotes only from vetted UK engine specialists.
Get Free N47D20D Engine Quotes