Mazda MX-5 / Miata, NC (USA / CAN)

Manual transmission fluid capacity & service interval

Mazda MX-5 / Miata, NC (USA / CAN) manual transmission fluid capacity ranges from 2 to 2,1 liters. Service intervals include 30000 miles or 24 months and 60000 miles or 48 months. The data covers 8 configurations.

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

TypeSpecifications
MX-5 / Miata 2.0 (125 kW) (2010-2015)
  • Use: Normal
  • Capacity 2 liter
  • Change 60000 miles/ 48 months
  • Code: M15M-D 5/1
MX-5 / Miata 2.0 (125 kW) (2010-2015)
  • Use: Severe
  • Capacity 2 liter
  • Change 30000 miles/ 24 months
  • Code: M15M-D 5/1
MX-5 / Miata 2.0 (125 kW) (2010-2015)
  • Use: Normal
  • Capacity 2,1 liter
  • Change 60000 miles/ 48 months
  • Code: P66M-D 6/1
MX-5 / Miata 2.0 (125 kW) (2010-2015)
  • Use: Severe
  • Capacity 2,1 liter
  • Change 30000 miles/ 24 months
  • Code: P66M-D 6/1
MX-5 / Miata 2.0 (125 kW) (2005-2010)
  • Use: Normal
  • Capacity 2 liter
  • Change 60000 miles/ 48 months
  • Code: M15M-D 5/1
MX-5 / Miata 2.0 (125 kW) (2005-2010)
  • Use: Severe
  • Capacity 2 liter
  • Change 30000 miles/ 24 months
  • Code: M15M-D 5/1
MX-5 / Miata 2.0 (125 kW) (2005-2010)
  • Use: Normal
  • Capacity 2,1 liter
  • Change 60000 miles/ 48 months
  • Code: P66M-D 6/1
MX-5 / Miata 2.0 (125 kW) (2005-2010)
  • Use: Severe
  • Capacity 2,1 liter
  • Change 30000 miles/ 24 months
  • Code: P66M-D 6/1

Additional Notes

  • The Mazda MX-5 / Miata NC 2.0 (125 kW) manual transmission carries either a 2.0-liter or 2.1-liter fluid capacity, and both figures appear across the full 2005-2015 model year span, indicating two distinct transmission variants within the same engine and power rating.
  • A 2.0-liter fill capacity is listed alongside a 2.1-liter fill capacity for the same 125 kW engine in both the 2005-2010 and 2010-2015 sub-ranges, meaning the difference in volume reflects a hardware distinction rather than a model year revision.
  • Under normal use conditions, the manual transmission fluid change interval is 60,000 miles or 48 months, whichever comes first, and this interval applies uniformly to both the 2.0-liter and 2.1-liter capacity variants across both sub-ranges.
  • Under severe use conditions, the change interval is halved to 30,000 miles or 24 months, again consistent across both capacity variants and both sub-ranges, reflecting the additional thermal and mechanical stress associated with severe operating conditions.
  • The severe-use interval of 30,000 miles or 24 months represents exactly half the normal-use interval in both mileage and time, which is a structurally symmetrical relationship maintained across all eight listed configurations.
  • The 2.1-liter capacity figure represents a 100 ml difference over the 2.0-liter figure, a modest but meaningful distinction that can affect proper fill level during a service, since underfilling a manual transmission can accelerate gear and bearing wear.
  • No capacity or interval distinction exists between the 2005-2010 and 2010-2015 sub-ranges for either the 2.0-liter or 2.1-liter variants, meaning the mid-cycle boundary at 2010 introduced no change to manual transmission fluid service specifications.

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