What engine is in the 2000 Lexus GS 400?
The engine is a 4.0-liter V8 known as the 1UZ-FE. This powerplant, developed by Toyota for Lexus, gave the GS 400 its refined performance in the year 2000.
The 1UZ-FE is a cornerstone of Toyota’s UZ family, renowned for smooth operation, strong low- and mid-range torque, and durability. In the GS 400, this engine paired with Lexus’ suspension tuning and adaptive luxury features to create a balanced luxury sport sedan experience.
Engine specifications at a glance
Key facts about the engine in the 2000 GS 400 are listed below.
- Engine code: 1UZ-FE
- Displacement: 4.0 L (approximately 3,999 cc)
- Configuration: V8, dual overhead camshaft (DOHC), 32 valves
- Induction: Naturally aspirated
- Construction: Aluminum block and heads for lightness and quick throttle response
- Fuel delivery: Electronic fuel injection
- Power output: About 290 horsepower (roughly 216 kW)
- Torque: About 300 lb-ft (roughly 407 Nm)
These specifications contributed to the GS 400’s reputation for refined acceleration and smooth power delivery across its rev range.
The engine in context
The 1UZ-FE was used across several Lexus models in the late 1990s and early 2000s, including the LS400 and SC300/SC400 family, making it a familiar and trusted powerplant for buyers seeking a premium, reliable V8 experience. Its design prioritized quiet operation, durability, and predictable performance rather than high-revving sportiness.
Development notes
The 1UZ-FE features aluminum construction, advanced valve timing, and a design philosophy aimed at long-term reliability. In the GS 400, this translated to a smooth, linear powerband that complemented the sedan’s emphasis on comfort and effortless highway cruising.
In sum, the GS 400’s 1UZ-FE engine defined the model’s character: a refined, easy-to-drive luxury performance powerplant with a proven track record.
Summary
The 2000 Lexus GS 400 is powered by the 4.0-liter 1UZ-FE V8, delivering roughly 290 hp and 300 lb-ft of torque. The engine’s aluminum construction, DOHC 32-valve setup, and reliable EFI system contributed to a refined and durable driving experience that Lexus buyers valued in that era.
What engine does a 2000 GS400 have?
Engine
| Base engine size | 4.0 L |
|---|---|
| Cylinders | V8 |
| Base engine type | Gas |
What engine does the 2000 Lexus LS400 have?
The LS400 is powered by a smooth, refined 4.0-liter V-8 engine with 290 horsepower.
What engine does a Lexus GS400 have?
4.0-liter 1UZ-FE V8
Answering customer requests for more power, the American market GS 400 (UZS160) was equipped with the 4.0-liter 1UZ-FE V8 that produced 224 kW (300 hp) and 420 N⋅m (310 ft⋅lb) of torque. Both models featured a five-speed automatic transmission with the GS 400 receiving steering wheel shift buttons.
Which Lexus GS has 2JZ?
The Lexus GS 300 from 1998 to 2005, which is the second generation of the GS, has the naturally aspirated 2JZ-GE engine. The more powerful, turbocharged 2JZ-GTE engine was never offered in a U.S. production GS, though it can be found in Japanese market Toyota Aristo models and is a popular engine swap for the GS 300.
- GS 300 (1998-2005): Came with the 2JZ-GE engine, a 3.0L inline-six that is naturally aspirated, reliable, and has a strong aftermarket for modifications.
- Turbocharged 2JZ-GTE: This is the turbocharged version made famous in the MK4 Supra and is not a factory option in the U.S. GS models.
- Engine swaps: Enthusiasts frequently swap the 2JZ-GTE engine from the Toyota Aristo into the GS 300 due to the 2JZ-GE's strong block and the availability of the turbo variant.
