Mazda CX-7, ER (USA / CAN)

Differential fluid capacity & service interval

Mazda CX-7, ER (USA / CAN) differential fluid capacity is 1 liter. The service interval is 28100 miles. The data covers 4 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
  • CX-7 2.3 AWD (CAN) (2006-2012)
  • Rear
  • Use: Normal
  • Capacity 1 liter
  • CX-7 2.3 AWD (CAN) (2006-2012)
  • Rear
  • Use: Severe
  • Capacity 1 liter
  • Change 28100 miles
  • CX-7 2.3 AWD (USA) (2006-2012)
  • Rear
  • Use: Normal
  • Capacity 1 liter
  • CX-7 2.3 AWD (USA) (2006-2012)
  • Rear
  • Use: Severe
  • Capacity 1 liter
  • Change 28100 miles

Additional Notes

  • The rear differential fluid capacity for the Mazda CX-7 ER 2.3 AWD is 1 liter across all listed configurations, covering both the USA and CAN markets for 2006-2012.
  • A 1-liter capacity is characteristic of a compact rear differential unit, consistent with the CX-7's crossover platform rather than a heavy-duty truck-based drivetrain.
  • No change interval appears under normal use conditions for either the USA or CAN configurations, while severe use carries a defined change interval of 28,100 miles.
  • The 28,100-mile severe-use interval applies identically to both the USA and CAN market variants of the 2.3 AWD, indicating no regional differentiation in service scheduling for demanding driving conditions.
  • Severe use conditions in automotive service contexts typically encompass frequent towing, off-road driving, repeated short trips, or operation in extreme temperatures, all of which accelerate fluid degradation in a rear differential.
  • The capacity value of 1 liter remaining consistent across both normal and severe use rows confirms the figure represents the standard service fill volume rather than a variation tied to operating conditions.

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