3.0 Td6 diesel: BMW M57D30

The Td6 was the launch diesel of the L322 (2002-2006), using BMW's well-regarded M57 inline-six turbodiesel. In a class then dominated by V8 petrols, it gave the Range Rover real long-distance economy. The engine itself has an excellent reputation; the ownership risks in this car lie mostly in the gearbox and turbo rather than the block.

BMW M57D30 3.0 Td6 inline-six turbodiesel engine from a Range Rover L322

BMW M57D30 3.0 Td6, the 2002-2006 diesel · engine photo

ENGINE QUICK FACTS

Engine code	BMW M57D30
Type	3.0 inline-6 turbodiesel
Power	130 kW
Torque	390 Nm
0-60	13.6 s
Years	2002-2006
Gearbox	GM 5L40-E
Verdict	Economical, slow

AT A GLANCE Engine reliability: ●●●●○ solid BMW six · Performance: ●●○○○ adequate, not strong · Economy: best of the early engines

Strengths	Weaknesses
+ Tough, long-lived BMW diesel	– Only 130 kW in a 2.5-tonne car
+ Far cheaper to run than the V8s	– Weak GM 5-speed auto behind it
+ Responds well to mild tuning	– Turbo & fuel pump wear with miles

Specifications

Engine code	M57D30 (TU variant)
Configuration	Inline-6, turbodiesel
Displacement	2,926 cc (the 2.9-litre M57 derivative)
Fuel system	Common-rail direct injection?Common rail keeps fuel at very high pressure in a shared "rail", letting the ECU inject precisely and multiple times per stroke, quieter, cleaner, more efficient than older diesels.
Turbo	Single variable-geometry turbo?VGT (variable-geometry turbo) has moveable vanes that change the exhaust flow angle, giving good boost at both low and high revs and reducing lag.
Power	approx. 130 kW
Torque	approx. 390 Nm
Gearbox	GM 5L40-E 5-speed automatic
Years in L322	2002-2006

Performance & economy

Manufacturer / period figures; real-world economy is typically lower. Petrols were often LPG-converted to cut fuel costs.

0-100 km/h	13.6 sec
Top speed	179 km/h
Economy	~11.3 l/100km (combined)
CO₂ emissions	~299 g/km
Kerb weight	~2,440 kg
Displacement	2,926 cc
Cylinders	Inline-6
Torque (alt. figure)	up to ~390 Nm

Power vs the L322 range

This engine	130 kW
Range span	130 kW (Td6) to 375 kW (5.0 S/C)

Design & technology

The M57 is one of BMW's most respected diesels, used across the 3, 5, 7, X5 and X6 ranges. It is an iron-block, aluminium-head straight-six with common-rail injection and a variable-geometry turbo. The Range Rover used the 2.9-litre-derived version, which is why its 130 kW sits below the 137 kW of BMW's base 3.0. The straight-six layout is inherently smooth, giving the Td6 refined, quiet running well suited to motorway cruising.

Performance

With 130 kW and 390 Nm hauling around 2.5 tonnes, the Td6 is adequate rather than quick, 0-100 km/h takes roughly 13 seconds. Where it shines is economy and refinement: real-world figures comfortably beat the petrol V8s, making it the sensible choice for high-mileage drivers of the era. A power increase should not be assumed to preserve reliability or drivetrain margins.

Reliability

The M57 engine and its ancillary systems need to be assessed together. Mileage alone does not establish condition or remaining life.

Common faults to check

Issue	Symptom & notes
GM 5L40-E gearbox	MY2002 specifies this gearbox for the Td6; its specification does not predict a failure mileage. Gearbox page.
Turbocharger	VGT vanes stick with carbon; power loss/limp mode. Confirm the cause on the specific car.
Low-pressure fuel pump	Starting or running issues require diagnosis; no fixed replacement mileage is established here.
Injectors	Wear at higher mileage; rough running, smoke.
Swirl flaps / EGR	Inlet manifold carbons up; clean periodically.

Maintenance notes

Use the service schedule and oil specification applicable to the engine; investigate turbo symptoms before replacing parts.
Service the gearbox fluid (don't treat "lifetime fill" literally) to extend the GM auto's life.
Keep the EGR and inlet tract clean to avoid power loss and limp mode.
Assess fuel-pump and injector condition from symptoms, testing and service records rather than a fixed mileage threshold.

Verdict

VERDICT A tough, economical, refined diesel let down in this car by the weak GM gearbox and turbo. A well-maintained Td6 is a sensible, cheap-to-run classic L322. But budget for gearbox and turbo work. For 2007-on cars the 3.6 TDV8 is a big step up in power and refinement.

↑ Back to top · « All engines