BMW 6 Series 630d Engine Replacement — Compare Prices & Get Quotes
Get quotes today from trusted UK BMW 630d specialists. Compare reconditioned, rebuilt and used 3.0-litre straight-six turbo-diesel engines - N57 and B57 variants across the F06, F12, F13 and G32 generations - supply & fit available nationwide.
The 630d THROUGH TIME - Era Map
Four generations. Four eras. One guide to reliability, costs and what really matters.
Era Note
First-gen N57 3.0L straight-six; 245 hp, 540 Nm; rear-mounted timing chain is the critical weakness
Why use this era map?
This table is the single source every other section on this page matches - Sections 2, 4 and 6 reference it rather than restating conflicting figures.
BMW 6 Series 630d Engine Replacement Costs
Figures above reflect current 630d replacement costs. The B57 variant typically sits at the higher end of the range. See the Era Map above for generation-specific pricing.
Labour estimate: Fitting a 630d engine typically takes 12–16 hours at £65–£95/hr (independent) or £110–£160/hr (London/SE dealer).
Ready to Compare?
Get Matched With a Vetted BMW Specialist
20+ vetted BMW specialists, every 630d variant covered, with a 12-month warranty as standard.
Get My Free 630d Engine Quotes Now
6 Series 630d - Repair, Buy, or Replace?
Every 320d has a story. Make the right call with clear data, real-world costs, and honest guidance from UK specialists.
Can It Be Repaired?
Buying This 630d? Check These First
Buy If
- Post-LCI F06/F12/F13 (2014+) with N57TU (improved timing chain design)
- G32 (2017+) with the B57 engine (modular design, improved reliability)
- Documented timing chain history on any N57-engined car
- Full service history with regular oil changes (critical for chain and bearing longevity)
- Evidence of regular longer runs (DPF health)
Avoid If
- Pre-2014 N57 with cold-start rattle and no chain history - assume it's overdue
- No service history - the N57 is unforgiving of neglect
- Short-journey ownership history - DPF and EGR issues likely
- Unexplained coolant loss or oil consumption - may indicate deeper issues
- Any 630d with a history of spun bearings - this is catastrophic
Closing Verdict
The 630d is BMW's 3.0-litre straight-six diesel flagship across the 6 Series range - offering effortless performance, refinement and economy in a luxury grand tourer package. The N57 (F06/F12/F13) is a powerful and efficient engine with one critical weakness - the rear-mounted timing chain. Post-2014 N57TU versions are improved, but chain maintenance remains important. The B57 (G32 Gran Turismo) is the most refined and reliable, with the chain design improved. All 630d engines share DPF and EGR maintenance requirements. With typical 6 Series values ranging from £10,000 (F13) to £35,000+ (G32), an engine replacement is a significant investment - the B57-engined G32 is the safest choice, but a well-maintained N57TU can also serve well.
Don't Guess. Compare.
Get real quotes from vetted UK specialists and make the right call for your 320d.
→ Compare 630d engine prices before you buy
Buying Checklist
Before you buy a used BMW 6 Series 630d (or before you commit to an engine replacement), check these:
Cold Start
Listen for rattling from the rear of the engine (N57 timing chain warning) - see the map above
Service History
Including which engine era (N57D30O0, N57D30O1 or B57D30A) and oil-change discipline
Timing Chain
For N57 (F06/F12/F13): check for any chain work or cold-start rattle
DPF Regeneration
Check history; short journeys accelerate wear on all diesel eras
EGR System
Look for signs of carbon buildup; any performance issues may indicate EGR problems
Turbo Health
Test acceleration; any lag, whistling, or hesitation?
Oil Condition
Check for any metallic particles (bearing wear warning)
Engine Warning Light
Have codes read; unresolved issues may indicate DPF, EGR or timing problems
MOT History
Check for emissions-related failures
Buy smart. Drive with confidence.
A few checks today can save thousands tomorrow. Use this checklist to avoid the most common 320d pitfalls.
BMW 320d Engine Codes
This table's rows match Section 1B's Era Map exactly.
N57D30O0
Technical Specs
N57D30O0 - F06/F12/F13 generation→ Compare 630d engine prices for your 6 Series
Get quotes from trusted UK specialists in minutes.
Market Intelligence
Most Common Failure
N57 timing chain stretch (pre-LCI F06/F12/F13)
the defining issue of the earlier 630d
Average Enquiry Mileage
60,000
–90,000 miles
[PATTERN DATA]
Average Replacement Cost
£5,500
–£6,500 reconditioned, supply only
[PLACEHOLDER]
Most Requested Engine Code
N57D30O0 / B57D30A
[PATTERN DATA]
Peak Enquiry Season
Winter
cold starts expose timing chain wear
[PATTERN DATA]
Regional Demand
PATTERN DATA
Regional Demand Breakdown
BMW 320d - Frequently Asked Questions
All prices are indicative UK market ranges based on historical quote data from our network of engine specialists. Actual costs vary by variant, engine condition, 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 6 Series 630d Owners Trust BMWEngines.uk
Trusted 630d Engine Suppliers
every garage and engine rebuilder in our network is vetted, rated and reviewed by real 6 Series 630d owners, as part of the Engine Finders network, across every generation - N57 and B57 - covering the F06, F12, F13 and G32 chassis.
Compare 630d Engine Replacement Companies
see prices, warranty terms and supply & fit options side-by-side before you commit. We cover the 3.0-litre straight-six diesel specifically, with specialists who understand the N57 timing chain vulnerabilities, DPF and EGR maintenance requirements, and the improved B57 design.
UK Engine Replacement Services for 630d
supply-only or full supply & fit available nationwide, covering every generation of this badge since 2010, with a 12-month warranty as standard across our network.
Find the best BMW 6 Series 630d engine replacement UK drivers rely on. Compare prices from trusted specialists on EnginesMarket today and get your 6 Series back on the road with confidence.
Compare BMW 6 Series 630d Engine Prices Now100% Free
No hidden fees
No Obligation
Get quotes with zero pressure
UK Specialists
20+ vetted experts
12-Month Warranty
As standard
Nationwide Delivery
Supply & fit available
100% Free
No hidden fees
No Obligation
Get quotes with zero pressure
UK Specialists
20+ vetted experts
12-Month Warranty
As standard
Nationwide Delivery
Supply & fit available