VW/Audi 2.5 R5 TDI PD Engine Specs, Problems, Reliability

VW/Audi 2.5 R5 TDI PD Engine Specs, Problems, Reliability. The 2.5 R5 TDI PD is the next generation of 2.5-liter inline diesel engine after the 2.5 R5 TDI. The engine saved primary dimensions and setup, however it is the new advancement.

VW Audi 2.5 R5 TDI PD Engine Specs

The engine is entirely made from aluminum alloy. There is a brand-new style of cylinder block made from a high-strength aluminum alloy. It has plasma-coated cylinder faces, and that suggests there are no cylinder liners. In this case, it is almost difficult to reconstruct this engine block. The Transporter 2004 has the starter mounted on the gearbox side, so the cylinder block doesn’t have the installing place for them instead of engine obstructs for VW Touaregs. The crankshaft chooses the essential vibration damper.

The engine got a cross-flow designed cylinder head (consumption ports and exhaust ports are on opposite sides of the head) which presents better gas and air circulation. The head has 2 valves per cylinder (10 valves overall), tappets and single camshaft on top (SOHC). The timing belt was removed, and now there is an equipment train. The generator, the vane pump for power steering, and the air conditioning unit compressor are driven directly by the gear train likewise.

VW/Audi 2.5 R5 TDI PD Engine Specs, Problems, Reliability

The engine has the second generation of camshaft-actuated Bosch Pumpe Duse (DP) unit injectors and direct injection (pump injection system). Exhaust gases spin the Variable Turbine Geometry (VTG) turbocharger and air went through an intercooler into a cast aluminum intake manifold. This engine is geared up with exhaust gas recirculation system and an exhaust gas recirculation cooler in numerous versions.

All engine operation is managed by torque-oriented Bosch EDC 16 engine management system. The max power difference in between the 131 hp (96 kW) version and the 174 hp (128 kW) variation is because of software modifications and turbocharger style.

VW/Audi 2.5 R5 TDI PD Engine Problems and Reliability

The 2.5-liter TDI PD engines are not as durable as the previous variation. It is a quite great engine and very trustworthy if you do the upkeep well (400-500k trouble-free miles). Some individuals had cylinder head and camshaft problems, however more frequently because of utilizing the incorrect oil. Some engines had the rubber seals wear slots in the fuel chamber around the injector and leak diesel fuel into the oil and drop pressure.

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VW/Audi 2.5 R5 TDI PD Engine Specs

Manufacturer Audi
Production years 2006-2011
Cylinder block material Cast Iron
Cylinder head material Aluminum
Fuel type Diesel
Fuel system Common rail direct injection
Configuration Inline
Number of cylinders 5
Valves per cylinder 2
Valvetrain layout SOHC
Bore, mm 81.0 (3.19 in)
Stroke, mm 95.5 (3.76 in)
Displacement, cc 2,461 cc (150.2 cu in)
Type of internal combustion engine Four-stroke, turbocharged
Compression Ratio 18.0:1
Power, hp 87-161 hp /3,500
Torque, lb ft 162-258 lb-ft/2,000
Engine weight
Firing order 1-2-4-5-3
Engine oil weight VW 504 00/ 507.00, 5W30
Engine oil capacity, liter 8.5 (9 liters with filter)
Oil change interval, mile 20,000 (30,000 km) /12 months
Applications Volkswagen Crafter
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VW/Audi 2.5 R5 TDI PD Engine Modifications

  • AXD – 131 hp (96 kW) at 3500rpm, 250 lb-ft (340 Nm) at 1900 rpm. This engine fits into VW Transporter 2004.
  • AXE – 174 hp (128 kW) at 3500rpm, 295 lb-ft (400 Nm) at 1900 rpm. This engine fits into VW Transporter 2004+.
  • BAC – this engine has the very same specs as AXE however it is created for VW Touareg – longitudinal installing.