Land Rover SDV8 / TDV8 (3.6 and 4.4 V8 diesel)
V8 · turbocharged · diesel · 2006–present
Also known as: sdv8, tdv8, 4.4 v8 diesel, 448dt, 3.6 tdv8, aj-v8 diesel
Jaguar Land Rover's V8 diesel — the 3.6 TDV8 and 4.4 SDV8 — in the Range Rover and Range Rover Sport.
It is a compact, very high torque engine in a very heavy vehicle, and that pairing shapes everything: it is worked hard even when the car is being driven gently.
⚑ Its known failures are all in the same place — the top of the engine, under the intake. The turbochargers are in the V, the EGR coolers are in the V, and access to any of it means removing the intake system. A job that sounds small is not, and that should be said before a quote is given.
Crankshaft and bearing failures are a documented pattern on the SDV8 at high mileage, and oil analysis is the cheap way to ask the question before a rebuild is priced.
The emissions equipment is where most complaints originate — DPF, EGR and, later, SCR — and the duty cycle that breaks it is a heavy vehicle on short journeys, which is how many of these are used.
The TDV6 in the lighter cars is a different engine with its own page here, and its results do not carry across.
Cars fitted with this engine
4 generations, across 1 make. From the authored catalogue — an absent car means the catalogue has not reached it, not that the engine was never fitted.
Information, not instruction
CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.
Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Posted about this engine
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What makes one worth reading:
- The car — make, model, year and engine. The same fault behaves differently on each.
- What you measured, not only what you replaced.
- What actually fixed it — or that nothing did, which is worth knowing too.
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