How much does a Range Rover 4.4 TDV8 / SDV8 engine replacement cost in the UK?

A reconditioned 448DT engine typically costs £6,500–£10,500 supply only depending on generation (L322 vs L405). Fitting adds £1,100–£2,500. Main dealer new engines can exceed £24,000. Use our calculator for a figure specific to your vehicle.

Is the Range Rover 4.4 TDV8 / SDV8 engine reliable?

The 448DT is widely considered the most reliable engine in the JLR diesel lineup — a genuine step up from the problematic 3.0 TDV6/SDV6. It's rated ★★★★☆, but has known maintenance items: oil cooler leaks, oil dilution on L405, and early L322 turbo oil drain pipe issues. No catastrophic bottom-end design flaws.

What are the common problems with the Range Rover 4.4 TDV8 / SDV8?

Oil cooler leaks (all years), oil dilution from DPF regeneration (L405 SDV8), turbo oil drain pipe issues (early L322 2010–2012), drive belt tensioner failure, and brittle air intake pipes. Timing chain wear is occasionally reported on higher-mileage examples.

Is it worth replacing a Range Rover 4.4 TDV8 / SDV8 engine, or should I scrap the car?

Against a £15,000–£30,000 L405, a £6,500–£10,500 recon engine is a significant but worthwhile investment given the Range Rover's strong retained value. For an L322 worth £5,000–£10,000, carefully assess the rest of the vehicle before committing. Replacement is almost always viable for well-maintained examples.

How do I find my Range Rover's engine code?

For the 4.4 TDV8/SDV8, the engine code is 448DT — it's on the VIN plate and vehicle documentation. The badge differs by generation: L322 (2010–2012) is badged '4.4 TDV8', while L405 (2012–2021) is badged '4.4 SDV8'. If you're unsure, tell us your registration date and we'll confirm it for free.

Can I repair the 448DT's oil cooler, or does it need a new engine?

Yes — the oil cooler leak is a straightforward repair costing £800–£1,500. The leak typically comes from gaskets and O-rings on the turbo oil feed pipe. If left too long, cross-contamination can cause premature wear, but the engine itself is not normally replaced for this issue alone.

Land Rover Range Rover 4.4 TDV8 / SDV82010–20214.4 448DT

Land Rover Range Rover 4.4 TDV8 / SDV8 Engine Replacement — Compare Prices & Get Quotes

Get quotes today from trusted UK Range Rover 4.4 V8 diesel specialists. Compare reconditioned, rebuilt and used 448DT engines for L322 and L405 — supply & fit available nationwide.

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Supply & Fit Available

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Range Rover 4.4 V8 Diesel Engines — from £4,500 to £10,500Code: 448DT

Range Rover 4.4 V8 Diesel Engines — from £4,500 to £10,500· Code: 448DT

Instant QuotesNo Obligation100% FreeReconditionedRebuiltUsedSupply & Fit AvailableUK-Wide Network

The 4.4 TDV8 / SDV8 THROUGH TIME — Era Map

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

Era Note

Early 4.4 TDV8 — watch for turbo oil drain pipe issues on 2010–2012 examples.

GenerationYearsEngine CodeReliabilityRecon CostEra Note

L322

2010–2012448DT (4.4 TDV8)★★★★☆ [NEWLY ASSIGNED — see Data Note]£6,000–£9,000 [PLACEHOLDER — confirm vs cost sheet]Early 4.4 TDV8 — watch for turbo oil drain pipe issues on 2010–2012 examples.

L405

2012–2021448DT (4.4 SDV8)★★★★☆ [NEWLY ASSIGNED — see Data Note]£6,500–£10,500 [EM-QUOTE]Refined SDV8 — oil dilution and oil cooler leaks are the main watchpoints.

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

Land Rover Range Rover 4.4 TDV8 / SDV8 Engine Replacement Costs

Supply Only£6,500–£9,000

Fitted (Indie)£7,600–£10,400

Warranty12–24 months

Best ForMost owners — best cost/warranty balance

Engine TypeSupply OnlyFitted (Indie)WarrantyBest For

Used Engine£4,500–£6,500£5,500–£7,8003–6 monthsBudget priority; vehicle under £10,000

Reconditioned Engine£6,500–£9,000£7,600–£10,40012–24 monthsMost owners — best cost/warranty balance

Rebuilt Engine£8,000–£10,500£9,100–£12,00012–24 monthsLong-term ownership; 3+ year horizon

Main Dealer New£18,000–£24,000£20,000–£26,50024–36 monthsInsurance jobs, warranty claims; dealer costs can exceed £24,000

Labour estimate: Fitting a 4.4 V8 diesel engine typically takes 15–25 hours at £65–£95/hr (independent) or £110–£160/hr (London/SE dealer).

Common Problems

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Range Rover 4.4 TDV8 / SDV8 — 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.

Range Rover 4.4 TDV8 / SDV8 — 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 SenseOil cooler leak (448DT)✅ Yes£800–£1,500Straightforward gasket and O-ring replacement; catch it before cross-contaminationOil dilution from DPF regen (448DT)⚠️ Depends£200–£350If caught before bearing damage; if not, engine replacement requiredTurbo oil drain pipe (early 448DT)✅ Yes£400–£800Preventative — replace the pipe before it kills the turboDrive belt tensioner failure (448DT)✅ Yes£200–£500Simple replacement; don't let it throw the beltTiming chain wear (448DT — occasional)✅ Yes£2,000–£4,000If caught early; chain replacement is a big job but far cheaper than a new engineCrankshaft bearing failure❌ Usually NoEngine replacementNot a common 448DT failure; if it occurs, replacement is the only option

Buying This 4.4 TDV8 / SDV8? Check These First

Buy If

Full service history with documented oil changes — this engine is unforgiving of neglect
L405 with proof of frequent oil changes (every 5,000–7,000 miles) to mitigate oil dilution
Oil cooler gaskets replaced as a preventative measure
L322 2010–2012 with evidence of turbo oil drain pipe work

Avoid If

Service history shows only urban driving patterns (DPF and oil dilution risk)
Oil level is visibly above the max mark on the dipstick — diesel contamination
Any evidence of oil in coolant or coolant in oil — oil cooler failure
Engine warning light present with no diagnosis documentation

Closing Verdict

The 4.4 TDV8/SDV8 is widely considered the most reliable engine in the JLR diesel lineup — a genuine step up from the problematic 3.0 TDV6/SDV6. But it's a complex V8 diesel with known maintenance items: oil cooler leaks, oil dilution on the L405, and early L322 turbo oil drain pipe issues. Buy on service history and proof of preventative maintenance. If you're replacing, a reconditioned unit with a 12-month warranty is the sweet spot — dealer new engines can exceed £24,000.

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Buying Checklist

Before you buy a used Land Rover Range Rover 4.4 TDV8 / SDV8 (or before you commit to an engine replacement), check these:

Cold Start — Listen for any timing chain rattle or clatter; the 448DT should start smoothly

Service History — Including which generation (L322 2010–2012 vs L405 2012–2021) — see the Era Map above

Oil Level Check — Is the oil above the max mark? This indicates potential diesel contamination from oil dilution

Coolant Condition — Is there oil in the coolant? Oil cooler leak indicator

Oil Leaks — Check the valley between cylinder banks for oil pooling (oil cooler leak)

Turbo Health — Any blue smoke, whine, or increased oil consumption? Turbo oil drain pipe issue on early cars

DPF Regeneration — Has the vehicle had regular motorway runs? Short journeys accelerate DPF and oil dilution issues

MOT History — Check for emissions-related failures; often point to DPF or EGR problems

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.

Engine Codes

448DT (TDV8)

Years2010–2012

Power313 bhp / 700 Nm

2025 Enquiries— (pattern data)

Avg. Recon Cost£6,000–£9,000 [PLACEHOLDER]

Engine CodeYearsPower2025 EnquiriesAvg. Recon Cost

448DT (TDV8)2010–2012313 bhp / 700 Nm— (pattern data)£6,000–£9,000 [PLACEHOLDER]

448DT (SDV8)2012–2021339 bhp / 740 Nm— (pattern data)£6,500–£10,500 [EM-QUOTE]

Technical Specs

448DT

Displacement4,367cc

Cylinders8-cylinder V (90°)

Compression Ratio16.1:1

Fuel SystemCommon-rail direct injection

TurbochargerTwin turbo (Garrett GT1549 + VTC)

Market Intelligence

Most Common Failure

Oil cooler leaks — approximately 45% of 448DT enquiries

[PATTERN DATA]

Average Enquiry Mileage

85,000

miles

[PATTERN DATA]

Average Replacement Cost

£8,000

reconditioned, supply only

[EM-QUOTE]

Most Requested Engine Code

448

[EM-VERIFIED]

Peak Enquiry Season

Autumn/Winter — oil cooler and DPF issues worsen in colder conditions

[PATTERN DATA]

Regional Demand

South East25%

Midlands18%

South West15%

PATTERN DATA

Regional Demand Breakdown

25%South East

FAQ

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.

Find the best Land Rover Range Rover 4.4 TDV8 / SDV8 engine replacement UK drivers rely on. Compare prices from trusted specialists on EnginesMarket today and get back on the road with confidence.

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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