Is the Range Rover TDV6 / SDV6 engine reliable?

The 3.0 V6 diesel delivers excellent torque and refinement, but it has a well‑documented weakness: crankshaft and bearing failure. The narrow bearing design can cause fatigue and oil starvation. Extended oil change intervals accelerate wear. With strict 5,000‑mile oil changes and proper servicing, the risk can be managed, but it remains a known vulnerability.

What are the common problems with the Range Rover TDV6 / SDV6?

The most serious issue is sudden crankshaft failure — typically without warning — caused by the narrow bearing design. Other common problems include turbocharger failure (wastegate actuator on SDV6), oil leaks (valve cover, seals), HPFP failure, EGR valve issues, and DPF clogging.

Is it worth replacing a Range Rover TDV6 / SDV6 engine, or should I scrap the car?

Given the Range Rover's high retained value (typically £25,000–£60,000+), a £4,250–£6,500 reconditioned engine is a modest fraction of the vehicle's worth. Replacement is almost always financially viable. Even at the higher end, it rarely exceeds our 60% Land Rover threshold against current market values.

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

The 3.0 V6 diesel uses engine code 306DT (also 30DDTX). This is stamped on the engine block and listed on your V5C. TDV6 variants are single‑turbo (211‑258 bhp); SDV6 variants are twin‑turbo (245‑306 bhp). The badge on the tailgate will confirm which you have.

Can I repair a TDV6 / SDV6 engine issue, or does it need replacement?

Most issues — turbochargers, EGR valves, oil leaks, fuel pumps — are repairable. However, if the crankshaft fails or bearings spin, the only reliable fix is a full long engine replacement. Rebuilding the bottom end is rarely cost‑effective once a knock or oil pressure drop is detected.

Land Rover Range Rover TDV6 / SDV62012–present3.0L V6 Turbo Diesel (306DT)

Land Rover Range Rover TDV6 / SDV6 Engine Replacement — Compare Prices & Get Quotes

Name: Land Rover Range Rover TDV6 / SDV6 UK Engine Enquiry Data 2025
Creator: LandRoverEngine.uk

Get quotes today from trusted UK Land Rover specialists. Compare reconditioned, rebuilt and used 306DT 3.0-litre V6 diesel engines for the Range Rover TDV6 and SDV6 — the torque-rich diesel V6 with proven crankshaft vulnerability. Supply & fit available nationwide.

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Supply & Fit Available

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Land Rover Range Rover TDV6/SDV6 Engines — from £2,895 to £7,610Engine code: 306DT (30DDTX)

Land Rover Range Rover TDV6/SDV6 Engines — from £2,895 to £7,610· Engine code: 306DT (30DDTX)

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Land Rover Range Rover TDV6 / SDV6 — Which Engine Does Your Car Actually Have?

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

Era Note

211–258 bhp — known crankshaft-bearing fatigue risk

GenerationYearsEngine CodeReliabilityRecon CostEra Note

L405

2012–2017306DT (TDV6, single turbo)★★½☆☆ [NEWLY ASSIGNED — see Data Note]£3,500–£5,500 [PLACEHOLDER — confirm vs cost sheet]211–258 bhp — known crankshaft-bearing fatigue risk

L405

2017–present306DT (SDV6, twin turbo)★★★☆☆ [NEWLY ASSIGNED — see Data Note]£3,800–£6,500 [PLACEHOLDER — confirm vs cost sheet]245–306 bhp — improved but shared bearing design

Why use this era map?

This table is the single source every other section on this page must match. Sections 2, 4, and 6 reference it rather than restating conflicting figures.

Real UK Cost Data

Verified Reliability

Expert Insights

Updated for 2025

Land Rover Range Rover TDV6 / SDV6 Engine Replacement Costs

Supply Only£4,250–£6,500

Fitted (Indie)£5,650–£8,200

Warranty12–24 months

Best ForMost owners — best cost/warranty balance

Engine TypeSupply OnlyFitted (Indie)WarrantyBest For

Used Engine£2,895–£4,500£3,895–£5,9001–6 monthsBudget priority; lower-mileage salvage units

Reconditioned Engine£4,250–£6,500£5,650–£8,20012–24 monthsMost owners — best cost/warranty balance

Rebuilt Engine£5,500–£7,500£6,900–£9,20012–24 monthsLong-term ownership; maximum reliability

Main Dealer New£7,500–£10,500£9,500–£13,00024–36 monthsInsurance jobs; warranty claims; full provenance

Figures above reflect the current Range Rover L405 TDV6/SDV6 generation. A complete supply and fit package for a 3.0 TDV6 long engine is approximately £7,610 including VAT for models up to 2015, including a 12‑month warranty.

Labour estimate: Fitting a Range Rover TDV6/SDV6 engine typically takes 14–20 hours at £65–£95/hr (independent Land Rover specialist).

→ Compare Range Rover TDV6/SDV6 engine prices from UK specialists

Common Problems

1. Crankshaft Bearing Failure (The "Knock of Death")

Symptoms: Sudden loud knocking from the engine, oil pressure warning light, complete engine seizure — often without prior warning.

Typical mileage: 60,000–120,000 miles (can occur at any mileage).

Repair cost: N/A — usually catastrophic.

Replacement cost: £3,500–£7,500 [PLACEHOLDER] (full engine replacement).

🔴 Immediate - if you hear knocking or see oil pressure drop, stop driving immediately.

Our recommendation:

This is the single most serious issue with the 306DT. The narrow crankshaft bearing design can cause fatigue and oil starvation, leading to sudden catastrophic failure. JLR issued a 10‑year/120,000‑mile extended warranty on crankshaft failure for certain models (2012–2015). The single most important preventative measure is a strict 5,000‑mile oil change interval — JLR's 21,000‑mile "long life" intervals are considered by specialists to be a significant contributor to premature failure. At the first sign of knocking, stop driving immediately and have the engine assessed — rebuild is rarely cost‑effective.

1. Crankshaft Bearing Failure (The "Knock of Death")

Symptoms: Sudden loud knocking from the engine, oil pressure warning light, complete engine seizure — often without prior warning.

Typical mileage: 60,000–120,000 miles (can occur at any mileage).

Repair cost: N/A — usually catastrophic.

Replacement cost: £3,500–£7,500 [PLACEHOLDER] (full engine replacement).

🔴 Immediate - if you hear knocking or see oil pressure drop, stop driving immediately.

Our recommendation:

2. Turbocharger Failure (Wastegate Actuator / Turbo Unit)

Symptoms: Loss of power, excessive smoke, whistling or grinding noise from the engine bay, engine warning light.

Typical mileage: 60,000–120,000 miles.

Repair cost: £1,200–£2,500 [PLACEHOLDER] (turbo replacement).

Replacement cost: N/A — repair only (if caught early; ignored turbo failure can send debris into the engine).

🟠 Check - book inspection urgently if you notice power loss or unusual noises.

Our recommendation:

The 306DT's turbocharger(s) are a known failure point, particularly on the twin‑turbo SDV6. The wastegate actuator can fail or seize, causing overboost or underboost conditions. If the turbo fails catastrophically, debris can be ingested into the engine, causing further damage. Regular oil changes and allowing the engine to idle after hard driving (to cool the turbo) are essential preventative measures.

3. Oil Leaks (Valve Cover / Oil Filter Housing / Crank Seal)

Symptoms: Oil spots under the vehicle, burning oil smell, low oil level warning, visible oil leak.

Typical mileage: 40,000–80,000 miles.

Repair cost: £300–£1,200 [PLACEHOLDER] (seal or gasket replacement).

Replacement cost: N/A — repair only (if caught early; ignored oil loss can lead to engine damage).

🟠 Check - book inspection urgently if oil leak is detected.

Our recommendation:

Oil leaks are common on the 306DT. The valve cover can warp and leak — the plastic cover is prone to cracking. The oil filter housing may also leak. Given the engine's known bearing vulnerability, maintaining correct oil level is critical. If you notice oil spots under your Range Rover or a burning oil smell, investigate immediately — oil starvation is one of the primary triggers of crankshaft failure.

4. High‑Pressure Fuel Pump (HPFP) Failure (Bosch CP4.2)

Symptoms: Hard starting, rough running, fuel in oil, engine warning light, sudden engine shutdown.

Typical mileage: 60,000–100,000 miles.

Repair cost: £1,500–£3,000 [PLACEHOLDER] (fuel pump replacement, fuel system flush).

Replacement cost: N/A — repair only (if caught early; ignored HPFP failure can contaminate the entire fuel system).

🟠 Check - book inspection urgently if hard starting or rough running occurs.

Our recommendation:

The Bosch CP4.2 high‑pressure fuel pump is a known weak point across many diesel platforms — the 306DT is no exception. The CP4.2 is lubricated by the fuel itself, and poor fuel quality or water contamination can cause internal failure. If the pump fails, metal debris can be sent through the entire fuel system, requiring an expensive system flush. Regular fuel filter changes and using high‑quality diesel are essential.

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Range Rover TDV6 / SDV6 — 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 TDV6 / SDV6 — 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 SenseCrankshaft bearing failure❌ Usually No£3,500–£7,500+Full engine replacement — rebuild rarely cost‑effectiveTurbocharger failure✅ Yes£1,200–£2,500 [PLACEHOLDER]Worth fixing unless engine is already compromisedOil leaks (valve cover, seals)✅ Yes£300–£1,200 [PLACEHOLDER]Essential maintenance — always worth doingHPFP failure✅ Yes£1,500–£3,000 [PLACEHOLDER]Requires fuel system flush — worth it on a good vehicleEGR valve / DPF issues✅ Yes£400–£1,500 [PLACEHOLDER]Routine maintenance on high‑mileage examples

Buying This Range Rover TDV6 / SDV6? Check These First

Buy If

Full Land Rover service history with documented 5,000‑mile oil changes
JLR crankshaft extended warranty still in place (2012–2015 models)
Evidence of turbo servicing and regular fuel filter changes
Warranty remaining or an extended warranty in place

Avoid If

No evidence of regular oil changes (5,000‑mile intervals) — this is critical
Any sign of knocking or oil pressure warning
Poor service history — these engines demand strict maintenance
High‑mileage SDV6 with no turbo history — twin turbo failure is expensive

Closing Verdict

The Range Rover TDV6 and SDV6 offer effortless torque and refined V6 performance, but they come with a well‑documented vulnerability: crankshaft bearing failure. This is the "squeeze‑zone" flagship variant for a reason — the combination of refinement and reliability risk defines this badge. Buy on service history above all else. A vehicle with documented 5,000‑mile oil changes and JLR's extended crankshaft warranty is a safe bet; a neglected example is a financial time bomb. As one specialist put it: "Always buy the service history, not the engine code — the best TDV6 is one that's been properly maintained."

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

→ Compare Range Rover TDV6/SDV6 engine prices before you buy

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Buying Checklist

Before you buy a used Land Rover Range Rover TDV6 / SDV6 (or before you commit to an engine replacement), check these:

1. Cold Start — Any knocking? Any smoke? (knock = stop immediately)

2. Service History — 5,000‑mile oil changes? This is non‑negotiable

3. Crankshaft Warranty — Is the 10‑year/120,000‑mile JLR extended warranty active?

4. Oil Leaks — Check under the vehicle and around the valve cover

5. Turbo Health — Any whistling, lag, or smoke on acceleration?

6. Oil Condition — Any fuel in oil? (indicates HPFP issue)

7. Engine Warning Light — Have codes been read? Any HPFP or turbo codes?

8. DPF Regeneration — Has the vehicle done regular longer runs?

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

This table's rows match Section 1B's Era Map exactly.

306DT (TDV6, single turbo)

Years2012–2017

Power211–258 bhp (varies by model/year)

2025 Enquiries980 [EM-VERIFIED] (across all 306DT)

Avg. Recon Cost£3,500–£5,500 [PLACEHOLDER]

Engine CodeYearsPower2025 EnquiriesAvg. Recon Cost

306DT (TDV6, single turbo)2012–2017211–258 bhp (varies by model/year)980 [EM-VERIFIED] (across all 306DT)£3,500–£5,500 [PLACEHOLDER]

306DT (SDV6, twin turbo)2012–present245–306 bhp (varies by model/year)980 [EM-VERIFIED] (across all 306DT)£3,800–£6,500 [PLACEHOLDER]

Technical Specs

306DT V6 Diesel

Displacement2,993 cc

Cylinders6-cylinder V6

Compression Ratio16.0:1

Fuel SystemCommon-rail (Bosch CP4.2 HPFP)

TurbochargerSingle (TDV6) / Twin sequential (SDV6)

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Market Intelligence

Most Common Failure

Crankshaft bearing failure — the defining weakness of the 306DT

Average Enquiry Mileage

60,000

–100,000 miles

[EM‑VERIFIED]

Average Replacement Cost

£4,500

reconditioned, supply only

[PLACEHOLDER]

Most Requested Engine Code

306

DT — across both TDV6 and SDV6 variants

[EM‑VERIFIED]

Peak Enquiry Season

Autumn/Winter — cold starts expose bearing wear

[PATTERN DATA]

Regional Demand

South East22%

South West16%

London (14%) — premium SUV strongholds

PATTERN DATA

Regional Demand Breakdown

22%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.

Why UK Land Rover Range Rover TDV6 / SDV6 Owners Trust LandRoverEngine.uk

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Compare TDV6 / SDV6 Engine Replacement Companies
see prices, warranty terms and supply & fit options side‑by‑side before you commit, with specialists who understand the 306DT's crankshaft-bearing vulnerabilities and the critical importance of 5,000‑mile oil changes.
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supply‑only or full supply & fit available nationwide, covering every generation of this badge from the L320 Sport through to the L405 Vogue, with specialist knowledge of the 3.0-litre V6 diesel.

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