Lexus IS, XE30 (EU)

Additional Notes

• The Lexus IS 250 USE30 carries a rear differential fluid capacity of 1.1-1.2 liters, which is noticeably smaller than the 1.3-1.4 liter capacity shared across the IS 200t ASE30, IS 300 ASE30, and IS 300h AVE30 variants.
• The 1.3-1.4 liter capacity range on the ASE30 and AVE30 platforms reflects a service fill specification, meaning the figure applies to a standard drain-and-refill procedure rather than a full housing overhaul.
• All configurations across the XE30 generation share an identical service interval of 30,000 km or 48 months under normal use conditions, whichever comes first.
• The IS 200t ASE30 (2015-2017) carries the same 1.3-1.4 liter capacity and 30,000 km / 48-month interval for both the standard rear differential and the limited slip differential variant, indicating no capacity distinction between the two differential types on that platform.
• The IS 300 ASE30 (2017-2018) mirrors the same pattern, with the standard rear differential and the limited slip rear differential both specifying 1.3-1.4 liters and a 30,000 km / 48-month change interval under normal use.
• A limited slip differential, unlike an open differential, uses friction-based clutch packs or a viscous coupling to distribute torque between wheels, which is why fluid condition in such units is typically monitored closely. The shared interval with the standard differential on the ASE30 reflects the normal-use condition applied to both.
• The IS 300h AVE30 spans two separate year groupings in the specifications, 2013-2019 and 2019-2020, both sharing the 1.3-1.4 liter capacity and the 30,000 km / 48-month interval under normal use conditions.