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

Automatic transmission fluid capacity & service interval

Mazda MX-5 / Miata, NB (USA / CAN) automatic transmission fluid capacity ranges from 6,7 to 7,1 liters. The data covers 5 configurations.

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

TypeSpecifications
MX-5 / Miata 1.8 (107 kW) (2004-2005)
  • Use: Normal
  • Capacity 6,7 liter
  • Code: 4/1
MX-5 / Miata 1.8 (107 kW) (2003-2004)
  • Use: Normal
  • Capacity 6,7 liter
  • Code: 4/1
MX-5 / Miata 1.8 (107 kW) (2001-2003)
  • Use: Normal
  • Capacity 6,7 liter
  • Code: 4/1
MX-5 / Miata 1.8 (107 kW) (2000-2001)
  • Use: Normal
  • Capacity 6,7 liter
  • Code: 4/1
MX-5 / Miata 1.8 (104 kW) (1999-2000)
  • Use: Normal
  • Capacity 7,1 liter
  • Code: 4/1

Additional Notes

  • The Mazda MX-5 / Miata NB automatic transmission fluid capacity differs between the two 1.8-liter engine variants covered in the 1999-2005 specifications.
  • The 104 kW version of the 1.8-liter engine, covering 1999-2000, carries an automatic transmission fluid capacity of 7.1 liters under normal use conditions.
  • The 107 kW version of the 1.8-liter engine, spanning 2000-2005, carries a reduced automatic transmission fluid capacity of 6.7 liters under normal use conditions.
  • The 0.4-liter difference between the 104 kW and 107 kW transmission capacities reflects a meaningful variation in total fluid volume, which typically corresponds to differences in transmission design or internal component sizing between the two engine outputs.
  • All five specification rows are designated for normal use conditions, meaning the 7.1-liter and 6.7-liter figures apply to standard operating environments rather than severe-duty cycles.
  • The 6.7-liter capacity for the 107 kW variant remains consistent across all of its listed model year ranges from 2000 through 2005, indicating no revision to the transmission fluid volume specification across that period.
  • A capacity figure listed under a transmission note, as seen in all rows here, generally represents the total system fill volume rather than a partial drain-and-refill service quantity, making the 7.1-liter and 6.7-liter values relevant primarily to full overhaul or complete fluid replacement procedures.

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