Lexus LS 400 (1990-1994)

1990–1994 Lexus LS 400, the first-generation LS that established Lexus as a luxury brand. The LS 400 transformed perceptions of Japanese luxury cars known for its “relentless pursuit of perfection,” exceptional reliability, and quiet, smooth driving experience.

Overview

• Production: 1989–1994 (1990–1994 model years in the U.S.)
• Body style: 4-door full-size luxury sedan (XF10 chassis)
• Layout: Front-engine, rear-wheel-drive

Engine & Performance

• Engine: 4.0L 1UZ-FE DOHC 32-valve V8
• Output: 250 hp @ 5,600 rpm, 260 lb-ft @ 4,400 rpm
• Transmission: 4-speed automatic
• 0–60 mph: ~8.0 seconds
• Top speed: ~149 mph
• Renowned for its smoothness, quietness, and reliability.

Features

• Ultra-quiet cabin, advanced NVH engineering, and aerodynamic design (Cd 0.29).
• Standard leather, wood trim, power accessories, and premium Nakamichi or Pioneer audio.
• Dual airbags introduced in later years; ABS standard.
• Exceptional ride quality and build precision.

Year	Updates
1990	Launch year. First Lexus model sold in the U.S. All-new 1UZ-FE V8, advanced sound insulation, and focus on quietness.
1991	Minor equipment and trim changes; automatic transmission software refined.
1992	No major updates; reliability improvements and new colors offered.
1993	Standard passenger airbag; upgraded sound system; minor chassis and brake refinements.
1994	Final year of first generation; safety updates continue. Prepares for major 1995 redesign (second-gen LS 400).

Year-by-year breakdown of the first-generation Lexus LS 400 (1990–1994)

Year	Key Features & Updates	Engine / Performance
1990	Launch year, first Lexus model in the U.S. Flagship luxury sedan designed to rival Mercedes S-Class and BMW 7 Series. Focus on quietness, build quality, and smooth ride. Standard features: leather, wood trim, premium Pioneer audio, power everything, ABS.	4.0L 1UZ-FE DOHC V8, 250 hp @ 5,600 rpm, 260 lb-ft @ 4,400 rpm, 4-speed automatic. 0–60 mph ~8.0s.
1991	Transmission shift logic updated for smoother performance. Minor trim and color updates. Improved climate control system.	Same 1UZ-FE V8, 250 hp.
1992	Additional sound insulation and reliability upgrades. New exterior colors and interior trims. Optional CD changer introduced.	Same 1UZ-FE V8, 250 hp.
1993	Safety updates: passenger-side airbag standard, improved seatbelts. Upgraded Nakamichi audio option. Minor chassis refinements and revised suspension bushings.	Same 1UZ-FE V8, 250 hp.
1994	Final year of the first generation. Equipment packaging simplified. Minor interior revisions. Prepares for all-new 1995 LS 400 (second-gen, XF20).	Same 1UZ-FE V8, 250 hp.