Engine Mazda RF5C

The Mazda RF5C 2.0-liter turbo diesel engine was assembled by the company from 2002 to 2005 and was installed only on European versions of the 6 series models and the popular MPV minivan. After a slight modernization in 2005, this power unit received a new RF7J index.

The MZR-CD family also includes diesel engines: RF7J and R2AA.

The engine was installed on:

  • Mazda 6 I (GG) in 2002 – 2005;
  • Mazda MPV LW in 2002 – 2005.


Production years 2002-2005
Displacement, cc 1998
Fuel system Common Rail
Power output, hp 120 – 135
Torque output, Nm 310
Cylinder block cast iron R4
Block head aluminum 16v
Cylinder bore, mm 86
Piston stroke, mm 86
Compression ratio 18.3
Features SOHC
Hydraulic lifters no
Timing drive belt
Phase regulator no
Turbocharging IHI VJ32
Recommended engine oil 5W-30
Engine oil capacity, liter 4.8
Fuel type diesel
Euro standards EURO 3
Fuel consumption, L/100 km (for Mazda 6 2004)
— city
— highway
— combined
Engine lifespan, km ~270 000
Weight, kg 195

Disadvantages of the Mazda RF5C engine

  • The most famous problem of this diesel engine is the burnout of the sealing washers under the nozzles.
  • The return of the injectors can also leak, then the oil will begin to mix with the fuel.
  • Often in the motor, the solenoid valves of the vacuum lines fail.
  • Engine weaknesses also include the SCV valve in the high pressure fuel pump, the vacuum pump and the mass air flow sensor.
  • In versions with a particulate filter, diesel fuel often enters the oil during burning.

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