Land Rover 3.0 Discovery Engine Repair
Diagnosis and rebuild support across every Discovery 3.0 generation.
Don't Have Reg..?
Discovery V6 & I6
Specialist 3.0 Support
The Engine Behind Three Discovery Generations
The 3.0 litre engine is the most widely fitted size across the Discovery range, spanning the long-running TDV6 and SDV6 diesel V6s and the newer Ingenium inline-six. Identifying exactly which generation and variant you have is the starting point for any accurate advice.
Many owners come to us specifically concerned about crankshaft failure on earlier TDV6 units, alongside the usual questions about rebuild cost and reliability compared with the newer Ingenium engine. We address both directly rather than offering vague reassurance.
Land Rover 3.0 Engine Codes to Help You Find Your Vehicle
| Make | Model | Engine Code | Actual CC | Power kw / hp | Year Range | |
|---|---|---|---|---|---|---|
| Land Rover | Discovery 4 | 306DT | 2993 | 155 kw / 211 hp | 2009-2016 | Get Quote |
| Land Rover | Discovery 4 | 30DDTX | 2993 | 155 kw / 211 hp | 2009-2013 | Get Quote |
| Land Rover | Discovery 4 | 30HD0D | 2995 | 188 kw / 256 hp | 2009-2013 | Get Quote |
| Land Rover | Discovery 4 | 306PS | 2995 | 250 kw / 340 hp | 2013-2016 | Get Quote |
| Land Rover | Discovery 5 | 306DT | 2993 | 155 kw / 211 hp | 2016-continue | Get Quote |
| Land Rover | Discovery 5 | 306PS | 2995 | 250 kw / 340 hp | 2016-continue | Get Quote |
| Land Rover | Range Rover Sport | 306DT | 2993 | 155 kw / 211 hp | 2009-2013 | Get Quote |
| Land Rover | Range Rover Sport | 30DDTX | 2993 | 155 kw / 211 hp | 2009-2013 | Get Quote |
| Land Rover | Range Rover Sport | 30HD0D | 2995 | 188 kw / 256 hp | 2009-2013 | Get Quote |
Did Not Find Your Engine code. CLICK HERE
Need an Expert Opinion?
Talk to our lead technician about your Range Rover engine today.
Why Choose Us
Confidence Built On Genuine 3.0 Diesel Experience
Honest, specialist support across every Discovery 3.0 engine generation
TDV6, SDV6 & Ingenium Knowledge
Experienced with the internal differences between older V6 diesels and the newer inline-six.
Straight Talk On Serious Faults
We explain crankshaft failure risk honestly rather than downplaying it to secure a quick sale.
Correctly Sourced Replacement Parts
Reconditioned engines and components are checked for condition before fitting to your Discovery.
Clearly Stated Warranty Cover
Reconditioned and replacement engines come with warranty terms explained before you commit to work.
Individually Itemised Pricing
Every quote reflects your specific engine, fault and vehicle rather than a generic estimate.
Realistic Repair Recommendations
We advise honestly on repair, rebuild or replacement based on your engine's actual condition.
Crankshaft Failure And 3.0 Engine Repair Options
Crankshaft failure is one of the most serious issues associated with the TDV6 diesel fitted to Discovery 3 and Discovery 4, and it's well documented enough that we address it directly rather than treating it as a rare exception. In the most severe cases, it results in total engine failure rather than a straightforward repair.
This kind of failure is often linked to timing chain and crankshaft pulley-related wear rather than routine mileage alone, which is why a proper inspection matters even on an engine that seems to be running normally. Catching early warning signs before failure occurs is far preferable to dealing with the aftermath.
The newer Ingenium inline-six fitted to later Discovery 5 models is a different design and hasn't shown the same documented crankshaft failure pattern, though it still relies on a timing chain and shouldn't be assumed maintenance-free. We diagnose each engine on its actual condition and explain your realistic options clearly.
- Inspection focused on crankshaft, timing chain and pulley-related wear
- Separate diagnostic approach for TDV6, SDV6 and Ingenium engines
- Full engine replacement where crankshaft damage has already occurred
- Rebuild options where wear is caught before serious damage
- Clear cost comparison between rebuild, reconditioned engine and replacement
Engine Work Across Every Discovery Generation
Engine Work Across Every Discovery Generation
From a crankshaft-related inspection to a complete engine replacement, our workshop supports TDV6, SDV6 and Ingenium 3.0 engines.
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 do Land Rover Discovery 3.0 diesel engines fail?
+x
Why do Land Rover Discovery 3.0 diesel engines fail?
The most serious documented cause is crankshaft failure on the TDV6, often linked to timing chain and crankshaft pulley-related wear rather than mileage alone. Other contributing factors include general wear on ageing components, which is why regular inspection matters on these engines.
02Is crankshaft failure common in the TDV6 engine?
+x
Is crankshaft failure common in the TDV6 engine?
It's a well-documented risk rather than a rare exception, and it's serious enough that we recommend proactive inspection instead of waiting for symptoms to appear. Not every TDV6 will experience it, but the potential severity means it shouldn't be ignored.
03Is the Land Rover Discovery 3.0 diesel engine reliable overall?
+x
Is the Land Rover Discovery 3.0 diesel engine reliable overall?
Reliability varies significantly by generation and service history, with TDV6 and SDV6 units carrying known crankshaft and timing chain risks that the newer Ingenium engine hasn't shown to the same extent. Consistent servicing and early inspection make a meaningful difference either way.
04Which Discovery generations use the 3.0 litre engine?
+x
Which Discovery generations use the 3.0 litre engine?
The 3.0 litre engine has been fitted across Discovery 3, Discovery 4 and Discovery 5, in TDV6, SDV6 and Ingenium form depending on model year. Confirming the exact engine code helps us assess your specific risk and repair options.
05How much does a Land Rover 3.0 engine rebuild cost?
+x
How much does a Land Rover 3.0 engine rebuild cost?
Cost depends on the engine variant, whether crankshaft damage has already occurred, and whether a rebuild, reconditioned unit or full replacement is appropriate. We assess each vehicle individually and provide a clear, itemised quote once diagnosis is complete.
06Can crankshaft failure be repaired, or does it always mean replacement?
+x
Can crankshaft failure be repaired, or does it always mean replacement?
This depends on how far the damage has progressed. Early warning signs caught during inspection may allow for a more limited repair, but once crankshaft failure has occurred, full engine replacement or a comprehensive rebuild is usually the only realistic option.
07Do reconditioned Land Rover 3.0 engines come with a warranty?
+x
Do reconditioned Land Rover 3.0 engines come with a warranty?
Yes, reconditioned and replacement engines are supplied with warranty cover. We'll confirm the specific terms for your engine and vehicle before any work is booked, so expectations are clear from the outset.
08What areas do you cover for Land Rover 3.0 engine work?
+x
What areas do you cover for Land Rover 3.0 engine work?
We're based in Grays, Essex, and regularly support customers across Essex, London and the wider South East, alongside UK-wide enquiries for engine supply and fitting. Contact us to confirm availability for your location.