The Lexus LM's cabin is extremely luxurious, featuring a 12.3-inch digital instrument cluster, a 14-inch central touchscreen (with Apple CarPlay), a Mark Levinson 21-speaker premium sound system, and 4-zone climate control with Nanoe X air purification. The 4-seat version also includes a 48-inch rear display, power footrests, rear seat massage functions, heated and ventilated seats, and power curtains.
Lexus LM 嘅車廂設備非常豪華，標配 12.3 吋數碼儀錶板、14 吋中控觸控屏幕（支援 Apple CarPlay）、Mark Levinson 21 揚聲器高級音響、四區恆溫冷氣連 Nanoe X 空氣淨化功能。4 座版仲有 48 吋後排顯示屏、電動腳踏、後排座椅按摩功能、冷暖通風座椅同電動窗簾。
