Land Rover Discovery 3 Engine Specialists
Independent TDV6 experts, including specialist diagnosis and repair for the crankshaft failure this generation is known for.
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Range Rover
Our TDV6 expertise carries directly across to the early Range Rover Sport, which shares the same 2.7-litre diesel engine, along with the crankshaft failure risk this generation is known for.
Land Rover
We diagnose and repair every Discovery 3 engine, from the 2.7 TDV6 diesel's known crankshaft weakness to 4.0 and 4.4-litre V8 petrol faults, with proper root-cause repair work.
Jaguar
Our broader diesel and V8 expertise covers Jaguar models of a similar era, giving Discovery 3 owners access to the same specialist diagnostic knowledge across both marques.
Land Rover Engine Codes to Help You Find Your Vehicle
| Make | Model | Engine Code | Actual CC | Power kw / hp | Year Range | |
|---|---|---|---|---|---|---|
| Land Rover | Discovery 3 | 276DT | 2720 | 140 kw / 190 hp | 2004-2009 | Get Quote |
| Land Rover | Discovery 3 | 406PN | 4009 | 156 kw / 212 hp | 2004-2009 | Get Quote |
| Land Rover | Discovery 3 | 448PN | 4394 | 220 kw / 299 hp | 2004-2009 | Get Quote |
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Reviews
"Knocking noise on my TDV6 turned out to be exactly what I feared, but they caught it before it caused a total engine failure. Grateful for the honest diagnosis."
Rob D. - TDV6 Knocking Noise
1 month ago
"Full engine replacement after crankshaft failure was handled professionally from start to finish. Clear communication and the car drives perfectly now."
Sharon K. - Crankshaft Replacement
1 month ago
"Oil pressure warning light led me here after a dealer quoted an eye-watering sum. Fair price, thorough explanation, and no pressure to overspend."
Ian F. - Oil Pressure Warning
1 month ago
"4.4 V8 engine rebuild came back running smoother than it had in years. Really impressed with the attention to detail throughout the whole job."
Michelle C. - 4.4 V8 Rebuild
1 month ago
"Collected my Discovery 3 for a TDV6 diagnostic after an intermittent knock. Found the issue quickly and gave me options rather than just pushing the most expensive fix."
Paul T. - TDV6 Diagnostic
1 month ago
"Second Land Rover I've brought here now. Always straightforward about what's actually needed, which counts for a lot with an engine issue this serious."
Emma L. - Direct Advice
1 month ago
"Knocking noise on my TDV6 turned out to be exactly what I feared, but they caught it before it caused a total engine failure. Grateful for the honest diagnosis."
Rob D. - TDV6 Knocking Noise
1 month ago
"Full engine replacement after crankshaft failure was handled professionally from start to finish. Clear communication and the car drives perfectly now."
Sharon K. - Crankshaft Replacement
1 month ago
"Oil pressure warning light led me here after a dealer quoted an eye-watering sum. Fair price, thorough explanation, and no pressure to overspend."
Ian F. - Oil Pressure Warning
1 month ago
"4.4 V8 engine rebuild came back running smoother than it had in years. Really impressed with the attention to detail throughout the whole job."
Michelle C. - 4.4 V8 Rebuild
1 month ago
"Collected my Discovery 3 for a TDV6 diagnostic after an intermittent knock. Found the issue quickly and gave me options rather than just pushing the most expensive fix."
Paul T. - TDV6 Diagnostic
1 month ago
"Second Land Rover I've brought here now. Always straightforward about what's actually needed, which counts for a lot with an engine issue this serious."
Emma L. - Direct Advice
1 month ago
TDV6 Vulnerability
Crankshaft Diagnostics
Understanding Crankshaft Failure in the Discovery 3
Crankshaft failure is a well-documented and serious issue affecting the 2.7-litre TDV6 diesel fitted to the Discovery 3, typically caused by the crankshaft bearings wearing beyond tolerance and allowing metal-to-metal contact within the engine.
The warning signs are usually distinct: a knocking or rumbling noise from the engine, often worsening under load, combined with a drop in oil pressure that may trigger a dashboard warning. Continuing to drive once these symptoms appear risks catastrophic engine damage.
We take any report of these symptoms seriously and carry out a thorough diagnostic before recommending next steps, because catching crankshaft wear early can sometimes avoid the need for a full engine replacement.
Acting Quickly Protects Your Engine and Your Budget
The window between early crankshaft warning signs and complete engine failure can be narrow, which is why we prioritise fast, accurate diagnosis whenever a TDV6 comes in with knocking noises or an oil pressure warning.
We use proper diagnostic equipment to assess bearing wear and oil pressure readings rather than relying on guesswork, giving you a clear picture of whether a repair, partial rebuild, or full engine replacement is the right path forward.
Acting on the early signs, rather than waiting for the engine to fail completely, is almost always the more cost-effective route for Discovery 3 owners.
Early Intervention
Preventing Failure
Engine Work Built Around Long-Term Reliability
A Discovery 3 engine repair or replacement should give you genuine confidence in the vehicle again, not just resolve the immediate fault. That's the standard we hold every job to.
Whether it's a TDV6 diesel or a 4.0/4.4-litre V8 petrol, rebuilds and replacements use quality components matched to the engine's specification, with oil pressure and bearing condition verified as part of the process. Every job is tested thoroughly before handover.
The result is a Discovery 3 that performs reliably, backed by a warranty and a specialist team who understand exactly what this generation is prone to.
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Explore Article→Why Specialist Diagnosis Matters for This Generation
Crankshaft failure symptoms can sometimes be mistaken for other faults, and an inaccurate diagnosis risks either unnecessary expense or, worse, continuing to drive a vehicle that's at genuine risk of serious engine damage.
Because we work specifically on Land Rover diesel and petrol engines, we know exactly what to check for on a TDV6 showing early warning signs, and we're upfront about whether a repair is viable or a replacement engine represents better value. That honesty matters on a fault this serious.
Every quote is provided in writing before any work begins, so Discovery 3 owners always know exactly what they're paying for.
Frequently Asked Questions
Everything you need to know about our Range Rover and Land Rover engine rebuild, replacement and repair services - answered by our JLR-trained specialists.
Request A Quote01Why does the Land Rover Discovery 3 suffer crankshaft failure?
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Why does the Land Rover Discovery 3 suffer crankshaft failure?
Crankshaft failure on the 2.7 TDV6 is typically caused by bearing wear that allows excessive play within the engine, eventually leading to metal-to-metal contact. It's a known issue on this engine generation, particularly on higher-mileage examples with inconsistent servicing history.
02Is the Discovery 3 2.7 TDV6 reliable?
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Is the Discovery 3 2.7 TDV6 reliable?
The TDV6 is a capable engine overall, but it carries a known risk of crankshaft failure that owners should be aware of. With regular oil changes and prompt attention to knocking noises or oil pressure warnings, many TDV6 engines run reliably for years.
03What are the symptoms of crankshaft failure?
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What are the symptoms of crankshaft failure?
The most common warning signs are a knocking or rumbling noise from the engine, particularly under load, along with a drop in oil pressure that can trigger a dashboard warning light. Either symptom should prompt an immediate diagnostic inspection.
04How much does an engine replacement cost?
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How much does an engine replacement cost?
Cost depends on whether a full replacement engine is needed or whether a partial repair is viable, which we determine through diagnostic testing. We provide a fixed quote after inspection, so you know the full cost before work begins.
05Which engines did the Discovery 3 use?
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Which engines did the Discovery 3 use?
The Discovery 3 was offered with the 2.7-litre TDV6 diesel alongside 4.0-litre and 4.4-litre V8 petrol engines, known in North America as the LR3. Each engine has its own specific maintenance considerations.
06Do you collect the vehicle or do I need to bring it in?
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Do you collect the vehicle or do I need to bring it in?
We offer nationwide collection and delivery, so distance from our workshop isn't a barrier to getting your Discovery 3 properly assessed. You're also welcome to drop the vehicle off yourself.
07Is there a warranty on reconditioned or replacement engines?
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Is there a warranty on reconditioned or replacement engines?
Yes, every reconditioned and replacement engine we supply and fit is covered by a warranty, giving you confidence in the work carried out.
08How long does a TDV6 engine repair or replacement take?
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How long does a TDV6 engine repair or replacement take?
Most repairs and replacements are completed within one to two weeks, depending on the extent of the damage and parts availability. We'll confirm an accurate timeframe once we've inspected your vehicle.
Professional Solutions
Visit Our Workshop
Our fully equipped workshop in Grays, Essex serves customers across London, the South East,
and the whole of the UK — with nationwide collection and delivery available.
Contact Information
Visit our specialist workshop in Grays, Essex. We welcome walk-ins and pre-booked appointments for all Range Rover and Land Rover engine enquiries.
Opening Hours
Monday - Friday: 9:00 AM - 6:00 PM
Saturday: 8:00 AM - 2:00 PM
Sunday: Closed