How much does a BMW X5 xDrive25d engine replacement cost in the UK?

A reconditioned X5 xDrive25d engine typically costs £1,500–£5,500 supply only depending on which generation (N47 or B47), with used units available from £1,000–£2,500. Fitting adds £1,500–£2,500. Use our calculator for a figure specific to your car.

Is the BMW X5 xDrive25d engine reliable?

It depends entirely on which generation. The N47 (2013–2015) has a well-documented timing chain weakness - the rear-mounted chain is labour-intensive to replace. The B47 (2015+) moved the chain to the front and is significantly more reliable. Both engines can suffer from DPF clogging and oil dilution. Check the Era Map above for your specific car.

What are the common problems with the BMW X5 xDrive25d?

N47: timing chain wear (rear-mounted design), DPF clogging, oil dilution from DPF regeneration. B47: DPF clogging, oil dilution, occasional turbocharger wear. The B47 is significantly more reliable than the N47.

Is it worth replacing a BMW X5 xDrive25d engine, or should I scrap the car?

Depends on vehicle value and generation. Against a well-kept G05 X5 xDrive25d worth £25,000–£40,000+, a £2,500–£5,500 recon is only 10–20% - well within the 70% BMW threshold. Against a tired F15 X5 with an N47 worth £6,000–£12,000, a £1,500–£3,500 recon is 30–50% - borderline, so evaluate carefully.

How do I find my BMW X5 xDrive25d engine code?

Listed on the VIN plate and vehicle documentation. F15 X5 (2013–2015) uses N47D20; F15 X5 (2015–2018) uses B47D20; G05 X5 (2018+) uses B47D20B. Tell us your registration date and we'll confirm it for free.

Can I repair the N47 timing chain, or does it need replacement?

It needs replacement - the chain stretches and guides wear. Replacement costs £1,000–£2,500 and is labour-intensive due to the rear-mounted chain location. A preventative replacement is far cheaper than a full engine replacement (£1,500+). At the first sign of cold-start rattle on an N47, book an inspection immediately.

BMW X5 xDrive25d2013–present2 Engine Generations

BMW X5 xDrive25d Engine Replacement — Compare Prices & Get Quotes

The X5 xDrive25d is BMW's entry-level diesel X5 - a 2.0-litre four-cylinder twin-turbo that punches above its weight. The early N47 has a well-documented timing chain weakness; the later B47 is significantly improved. Get quotes from UK specialists for reconditioned, rebuilt and used units today.

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BMW X5 xDrive25d Engines - from £1,000 to £6,500Common codes: N47D20, B47D20

BMW X5 xDrive25d Engines - from £1,000 to £6,500· Common codes: N47D20, B47D20

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The xDrive25d THROUGH TIME - Era Map

Four generations. Four eras. One guide to reliability, costs and what really matters.

GenerationYearsEngine CodeReliabilityRecon CostEra Note

Why use this era map?

Every cost guide, reliability rating and engine code on this page is aligned to the data above. This keeps everything consistent and trustworthy.

Real UK Cost Data

Verified Reliability

Expert Insights

Updated for 2025

BMW X5 xDrive25d Engine Replacement Costs

Supply Only£1,500–£4,000

Fitted (Indie)£3,500–£6,000

Warranty12–24 months

Best ForMost owners - best cost/warranty balance

Engine TypeSupply OnlyFitted (Indie)WarrantyBest For

Used Engine£1,000–£2,500£2,500–£4,5001–6 monthsBudget priority; older N47 examples

Reconditioned Engine£1,500–£4,000£3,500–£6,00012–24 monthsMost owners - best cost/warranty balance

Rebuilt Engine£3,000–£6,500£5,000–£8,50012–24 monthsLong-term ownership; 3+ year horizon

Main Dealer New£6,000–£10,000+£8,000–£12,000+24–36 monthsInsurance jobs, warranty claims

Figures above reflect the current X5 xDrive25d market. N47-engined cars sit at the lower end; B47 examples command a premium. See the Era Map above for generation-specific context.

Labour estimate: Fitting an X5 xDrive25d engine typically takes 12–16 hours at £65–£95/hr (independent) or £110–£160/hr (London/SE dealer). The N47's rear-mounted chain location makes timing chain replacement particularly labour-intensive.

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Common Problems With BMW 320d Engines

1. N47 Timing Chain Failure (Rear-Mounted Design)

Symptoms: Rattling noise on cold start lasting 2–5 seconds, metallic ticking from the rear of the engine, engine warning light, cam timing errors, eventual chain slip

Typical mileage: 60,000–100,000 miles

Repair cost: £1,000–£2,500 (timing chain, tensioner, and guide replacement)

Replacement cost: £1,500–£3,500 (if chain jumps and causes valve interference)

🔴 Immediate - any cold-start rattle on an N47 requires immediate investigation

Our recommendation:

The N47's timing chain is mounted at the rear of the engine - a design that makes replacement exceptionally labour-intensive (engine-out job). The chain can stretch and the plastic guides can break, leading to catastrophic engine failure. BMW faced widespread complaints and class action lawsuits over this issue. If you're buying an N47-engined X5 xDrive25d and there's no proof of timing chain work, budget for it immediately - or walk away. Frequent oil changes (every 5,000–8,000 miles) can help prevent chain wear.

Read the full timing chain failure guide

1. N47 Timing Chain Failure (Rear-Mounted Design)

Symptoms: Rattling noise on cold start lasting 2–5 seconds, metallic ticking from the rear of the engine, engine warning light, cam timing errors, eventual chain slip

Typical mileage: 60,000–100,000 miles

Repair cost: £1,000–£2,500 (timing chain, tensioner, and guide replacement)

Replacement cost: £1,500–£3,500 (if chain jumps and causes valve interference)

🔴 Immediate - any cold-start rattle on an N47 requires immediate investigation

Our recommendation:

Read the full timing chain failure guide

2. DPF Clogging and Regeneration Issues (N47 and B47)

Symptoms: Reduced engine power, increased fuel consumption, warning lights on the dashboard, rough idle, engine hesitation

Typical mileage: 40,000–80,000 miles

Repair cost: £400–£1,200 (DPF cleaning or forced regeneration)

Replacement cost: £1,500–£4,000 (if DPF failure causes engine damage)

🟡 Monitor - book inspection soon

Our recommendation:

Like all modern diesels, the X5 xDrive25d suffers from DPF clogging - particularly if the vehicle is frequently driven on short trips or in urban environments where regeneration cycles are less effective. The 2.0-litre engine works hard to move the heavy X5, which can exacerbate DPF issues. Regular long drives that allow for complete DPF regeneration can help maintain the system. If you see warning lights or notice reduced power, have the DPF system inspected promptly. Prevention is cheaper than replacement.

Read the full DPF failure guide

3. Oil Dilution (Diesel in Oil) - N47 and B47

Symptoms: Rising oil level on the dipstick, smell of diesel in the oil, engine warning light, DPF regeneration occurring frequently

Typical mileage: Any mileage - exacerbated by short journeys

Repair cost: £150–£300 (oil and filter change with correct spec oil)

Replacement cost: £1,500–£4,500 (if prolonged dilution causes bearing failure)

🟠 Check - book inspection urgently

Our recommendation:

Diesel engines suffer from oil dilution - fuel gets past the piston rings during DPF regeneration cycles. Short journeys make this worse. Check the oil level regularly; if it's rising, get an oil change immediately using the correct BMW-spec oil (5W-30 LL-04). Extended dilution damages bearings and leads to catastrophic failure. Regular motorway runs to allow passive DPF regeneration are essential.

Read the full oil dilution guide

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X5 xDrive25d - 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.

X5 xDrive25d - 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?

ProblemRepairable?Typical CostWhen It Makes SenseN47 timing chain (preventative)✅ Yes£1,000–£2,500Labour-intensive (engine-out) but far cheaper than a full engine replacementN47 timing chain failure (engine damage)❌ Usually NoEngine replacementIf chain jumps and valves hit pistons, replacement is the only optionDPF clogging✅ Yes£400–£1,200Forced regeneration or cleaning - prevention is keyOil dilution (caught early)✅ Yes£150–£300Oil change with correct spec - cheap and effectiveTurbocharger wear✅ Yes£800–£2,500Turbo replacement - catch before debris damages the engine

Buying This X5 xDrive25d? Check These First

Buy If

B47-engined car (late 2015+) - the more reliable engine with the front-mounted chain
N47-engined car with documented timing chain work - evidence of the upgrade is essential
Full service history with correct BMW-spec oil (5W-30 LL-04 or 0W-30)
Evidence of regular motorway driving - DPF regeneration requires motorway runs

Avoid If

N47-engined car with no proof of timing chain work - you're buying a known risk
Any cold-start rattle - this is almost certainly timing chain wear on N47
Evidence of rising oil levels - oil dilution is damaging bearings
Poor service history - both engines are unforgiving of neglect

Closing Verdict

The X5 xDrive25d is a capable and efficient entry into X5 ownership - but the engine choice matters enormously. The N47 (2013–2015) has a well-documented timing chain weakness - the rear-mounted design makes replacement expensive. The B47 (2015+) relocated the chain to the front, eliminating the most serious flaw. The B47 is the much safer bet. If you're buying an N47, demand timing chain history - or walk away.

Don't guess.Get the right engine at the right price.

→ Compare xDrive25d engine prices before you buy

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Buying Checklist

Before you buy a used BMW X5 xDrive25d (or before you commit to an engine replacement), check these:

1. Cold Start

Listen for rattles lasting more than 1–2 seconds (timing chain warning on N47)

2. Service History

including which generation (F15 or G05) and evidence of timing chain work on N47

3. Oil Level

Is the oil level rising on the dipstick? (oil dilution warning)

4. DPF Health

Any warning lights or reduced power? (DPF clogging is common)

5. Oil Condition

Any signs of diesel contamination? (fuel in oil)

6. Turbo Performance

Test acceleration; any whistling, hesitation, or loss of power?

7. Engine Warning Light

Have codes been read? Any unresolved issues?

8. MOT History

Check for emissions-related failures (DPF, EGR, NOx sensor issues)

Buy smart. Drive with confidence.

A few checks today can save thousands tomorrow. Use this checklist to avoid the most common 320d pitfalls.

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 - three engine configurations across the X5 xDrive25d's history.

N47D20 (N47D20T1/D/S1)

Years2013–2015

Power218 hp

2025 Enquiries[PATTERN DATA]

Avg. Recon Cost£1,500–£3,500 [BMW-QUOTE]

Engine CodeYearsPower2025 EnquiriesAvg. Recon Cost

N47D20 (N47D20T1/D/S1)2013–2015218 hp[PATTERN DATA]£1,500–£3,500 [BMW-QUOTE]

B47D20 (B47D20T0)2015–2018218–231 hp[PATTERN DATA]£2,000–£4,500 [BMW-QUOTE]

B47D20B2018–present231 hp[PATTERN DATA]£2,500–£5,500 [BMW-QUOTE]

Technical Specs

B47D20B - current generation

Displacement1,995cc (2.0-litre)

Cylinders4-cylinder inline

Compression Ratio16.5:1

Fuel SystemCommon-rail direct injection

TurbochargerTwin-turbo

MHEV48V mild-hybrid system (G05 models)

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Market Intelligence

Most Common Failure

N47: timing chain wear / B47: DPF clogging

the defining risks of each generation

Average Enquiry Mileage

N47: 70,000–100,000 miles / B47: 40,000–70,000 miles【PATTERN DATA】

Average Replacement Cost

£1,500

–£5,500 reconditioned, supply only depending on generation【BMW-QUOTE】

Most Requested Engine Code

N47D20

the early F15 xDrive25d【PATTERN DATA】

Peak Enquiry Season

Winter

cold starts expose timing chain issues【PATTERN DATA】

Regional Demand

London20%

South East18%

North West (12%)【PATTERN DATA】

Regional Demand Breakdown

20%London

18%South East

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 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.

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every garage and engine rebuilder in our network is vetted, rated and reviewed by real X5 xDrive25d owners, as part of the Engine Finders network, across both the F15 and G05 generations - whether you drive the N47 or B47 engine.
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see prices, warranty terms and supply & fit options side‑by‑side before you commit, with specialists who genuinely understand the timing chain, DPF, and oil dilution nuances of each X5 xDrive25d generation.
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As standard

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