Lexus NX, AZ20 (USA / CAN)

Automatic transmission fluid capacity & service interval

Lexus NX, AZ20 (USA / CAN) uses automatic transmission fluid with a capacity range of 7,1 to 7,3 liters. Service intervals include checks at 8000 km/ 6 months, 8000 km/ 12 months, 30000 miles/ 36 months, and 60000 miles/ 72 months, as well as a fluid change at 60000 miles/ 72 months. The data covers 9 configurations.

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

TypeSpecifications
NX 350 AWD (CAN) (2022- )
  • Use: Normal
  • Capacity 7,1 liter (Service fill)
  • Check 8000 km/ 6 months
  • Code: U81F 8/1
NX 350 AWD (USA) (2022- )
  • Use: Normal
  • Capacity 7,1 liter (Service fill)
  • Check 30000 miles/ 36 months
  • Code: U81F 8/1
NX 350 AWD (USA) (2022- )
  • Use: Severe
  • Capacity 7,1 liter (Service fill)
  • Change 60000 miles/ 72 months
  • Code: U81F 8/1
NX 250 AWD (CAN) (2021- )
  • Use: Normal
  • Capacity 7,3 liter
  • Check 8000 km/ 6 months
  • Code: UB80F 8/1
NX 250 AWD (USA) (2021- )
  • Use: Normal
  • Capacity 7,3 liter
  • Check 60000 miles/ 72 months
  • Code: UB80F 8/1
NX 250 AWD (USA) (2021- )
  • Use: Severe
  • Capacity 7,3 liter
  • Change 60000 miles/ 72 months
  • Code: UB80F 8/1
NX 250 FWD (CAN) (2021- )
  • Use: Normal
  • Capacity 7,3 liter
  • Check 8000 km/ 12 months
  • Code: UB80E 8/1
NX 250 FWD (USA) (2021- )
  • Use: Normal
  • Capacity 7,3 liter
  • Check 30000 miles/ 36 months
  • Code: UB80E 8/1
NX 250 FWD (USA) (2021- )
  • Use: Severe
  • Capacity 7,3 liter
  • Change 60000 miles/ 72 months
  • Code: UB80E 8/1

Additional Notes

  • The Lexus NX 250 automatic transmission holds 7.3 liters of fluid across all NX 250 configurations, regardless of drivetrain or market. The NX 350 AWD carries a slightly lower service fill capacity of 7.1 liters, with that figure explicitly labeled as a service fill value rather than a total system volume.
  • A service fill capacity reflects the amount of fluid added during a routine drain-and-fill service, not the full volume the transmission holds when completely empty. The NX 350 AWD's 7.1-liter figure is designated this way, meaning the total system capacity is higher than what a standard service procedure replaces.
  • The NX 250 AWD in Canada carries a check interval of 8,000 km or 6 months under normal use conditions, while the NX 250 FWD in Canada has the same distance interval but a longer time allowance of 12 months. The difference in time intervals between AWD and FWD Canadian configurations reflects a more frequent monitoring schedule for the all-wheel-drive variant.
  • In the USA market, the NX 250 AWD under normal use conditions specifies a check interval of 60,000 miles or 72 months, which is considerably longer than the 30,000 miles or 36 months specified for the NX 250 FWD under the same normal use conditions.
  • Under severe use conditions in the USA, both the NX 250 AWD and NX 250 FWD share an identical change interval of 60,000 miles or 72 months. The distinction from normal use is the service action itself: severe conditions require an actual fluid change rather than a fluid check.
  • The NX 350 AWD in Canada under normal use conditions specifies a check interval of 8,000 km or 6 months, matching the interval assigned to the NX 250 AWD in Canada. In the USA, the NX 350 AWD under normal use conditions specifies a check at 30,000 miles or 36 months, aligning with the NX 250 FWD USA normal interval rather than the NX 250 AWD USA normal interval.
  • The NX 350 AWD in the USA under severe use conditions specifies a fluid change at 60,000 miles or 72 months, consistent with the severe-use change intervals listed for both NX 250 drivetrain variants in the same market.

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