Does the 2005 GS300 have a 2JZ?
The 2005 Lexus GS300 uses the 2JZ-GE inline-six engine, not the turbocharged 2JZ-GTE. It is the naturally aspirated member of the 2JZ family that powered several Lexus models in that era.
In this article, we break down what that means for the GS300, how the 2JZ-GE fits into the car’s performance, and what buyers or enthusiasts should know when evaluating a 2005 GS300. We’ll also compare the 2JZ-GE to its turbocharged sibling so you can distinguish between the variants.
Engine basics
Before diving into specifics, here are the core characteristics of the engine that powers the 2005 GS300:
- Engine name and displacement: 2JZ-GE, a 3.0-liter inline-six.
- Configuration and valvetrain: Dual overhead cam (DOHC) with 24 valves.
- Block/head construction: Typically a rugged iron block with an aluminum cylinder head.
- Induction: Naturally aspirated (not turbocharged).
- Transmission pairing: Usually a 5-speed automatic with sport/SequentialShift mode; no factory manual transmission option for the GS300 in most markets.
In summary, the 2005 GS300 relies on the naturally aspirated 2JZ-GE to deliver smooth, linear power delivery characteristic of Lexus six-cylinders from that era, without the turbocharged boost of the 2JZ-GTE.
2JZ-GE vs 2JZ-GTE
It’s helpful to distinguish the engine family within the 2JZ lineup. The 2JZ-GE is the normally aspirated version, used in many Lexus and Toyota models such as the GS300 and IS300. The 2JZ-GTE is the turbocharged variant, famously tuned for higher output in performance applications like the Toyota Supra. The key takeaway for the 2005 GS300 is that it uses the 2JZ-GE, not the turbocharged GTE.
For potential buyers: what this means in practice
Before looking at a 2005 GS300, keep these points in mind about the engine and its maintenance history:
- Identify the correct engine: confirmed 2JZ-GE (not swapped with a turbocharged unit).
- Maintenance history matters: ensure timing belt/intervals (if applicable) and regular service records are up to date, since age and miles affect seals, gaskets, and rubber components.
- Common concerns: look for signs of oil leaks around the valve cover and timing belt area, check coolant for oil contamination, and listen for unusual noises that could indicate wear in the valvetrain or bearings.
Overall, the 2005 GS300 offers a refined and reliable powerplant when properly maintained, with the 2JZ-GE providing a smooth and durable driving experience within Lexus’s mid-size sedan lineup.
Bottom line
The 2005 GS300 does have the 2JZ-GE engine, the naturally aspirated 3.0-liter inline-six that powered several Lexus models in that period. It is not the turbocharged 2JZ-GTE, which appears in different performance applications. If you’re evaluating a used 2005 GS300, confirm the engine variant, review maintenance history, and listen for signs of typical wear to ensure long-term reliability.
Summary: The 2005 GS300 uses the 2JZ-GE engine, not the turbo 2JZ-GTE. It’s a reliable, naturally aspirated inline-six common in Lexus models of that era, paired with a 5-speed automatic transmission, and requires standard mid-2000s maintenance practices to keep it performing well.
Does the 2005 Lexus GS300 have a 2JZ?
The Lexus GS 300 had a naturally aspirated 2JZ engine capable of generating 227 horsepower and 210 lb-ft of torque.
What engine does the GS300 have?
The Lexus GS300 is equipped with a three-litre, six cylinder engine which is fitted with continuously variable valve timing and electronic throttle control. Power is boosted to 218 bhp at 5,800rpm and torque is increased to 219 lb. ft at the lower engine speed of 3,800 rpm.
What engine is in a 2005 GS300?
Engine
| Base engine size | 3.0 L |
|---|---|
| Cylinders | Inline 6 |
| Base engine type | Gas |
What Lexus GS300 has 2JZ?
The Lexus GS300 from the first and second generations (approximately 1991–2005) is equipped with the 2JZ engine. Specifically, these models came with the naturally aspirated 2JZ-GE engine. The high-performance 2JZ-GTE engine, famously used in the Supra, was only available in the Japanese Toyota Aristo model, not the US-market GS300.
- Model years: The 1991–1997 and 1998–2005 GS300 models were the ones that featured the 2JZ engine.
- Engine type: The US-market GS300 models came with the naturally aspirated 2JZ-GE engine.
- Turbocharged 2JZ-GTE: This more powerful, turbocharged engine was found in the Japanese market Toyota Aristo, which is the Japanese equivalent of the GS300, but it was not a factory option in the US GS300.
