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What transmission does a Lexus is300 have?

The Lexus IS300 from its first generation (sold in the U.S. from 2001 to 2005) offered two main transmission choices: a 5-speed manual or a 4-speed automatic.


In this article, we break down what those options were, how to tell which one your IS300 has, and what to expect in terms of maintenance and performance. The IS300 uses a 3.0-liter inline-six (2JZ-GE) paired with either the manual or automatic transmission, and both configurations were available on the original IS300 in most markets. This piece focuses on the U.S. model and commonly seen configurations, noting that later IS variants moved to different transmission setups.


Transmission options for the IS300


The two main transmission configurations you’ll encounter on the first‑generation IS300 are listed below.



  • 5-speed manual transmission (manual shift with a clutch pedal)

  • 4-speed automatic transmission (automatic with a conventional gear selector, offering a manual mode on some trims)


Concluding note: For enthusiasts, the 5-speed manual offers greater driver involvement, while the 4-speed automatic provides convenience and smooth operation. Both were official factory options during the IS300’s North American run, with no factory 6-speed option in that generation.


How to tell which transmission your IS300 has


To determine your specific IS300’s transmission without guessing from appearance alone, follow these steps.



  1. Look for a clutch pedal on the floor. If a clutch pedal exists, the car is equipped with a manual transmission.

  2. Check the gear selector: a 5-speed manual uses a conventional stick with gears 1–5 and a reverse gear; a 4-speed automatic shows a PRNDL layout (Park, Reverse, Neutral, Drive, Low) and no clutch pedal.

  3. Examine the owner’s manual or window sticker for the original transmission specification.

  4. Inspect the vehicle’s service records orVIN paperwork; these documents typically list the factory transmission option.


By confirming these details, you’ll know exactly which transmission your IS300 has, which is important for maintenance, parts compatibility, and potential upgrades.


Notes for owners and buyers


When shopping for an IS300 or maintaining one already in your driveway, remember:



  • The manual transmission is sought after by drivers who prefer a more engaged driving experience; it requires clutch wear management and regular clutch/slave cylinder checks.

  • The 4-speed automatic is generally robust but can experience common aging issues such as worn valve bodies, solenoids, or torque converter concerns; proactive transmission fluid changes are often recommended at appropriate intervals.


Regardless of the transmission, verifying proper maintenance history and ensuring the current unit shifts smoothly will help preserve performance and reliability.


Summary


The first-generation Lexus IS300 offered two factory transmission options in the U.S.: a 5-speed manual and a 4-speed automatic. Identifying which one your specific IS300 has can be done by checking for a clutch pedal, examining the gear selector, and reviewing documentation. Understanding the transmission helps with maintenance, parts choices, and driving preferences, whether you value engagement with a manual or the ease of an automatic.

What are common Lexus IS 300 problems?


Lexus IS300 Problems

  • Check Engine Light Due to EVAP System Failure.
  • Check Engine Light and Lack of Power Due to Failed Mass Air Flow Sensor.
  • Lexus IS300 won't start despite strong battery current, seeking diagnostic suggestions.
  • Lexus IS300 bald front tires and worn front brake pads issue.



Does the Lexus IS 300 have 2JZ?


Yes, the Lexus IS300 comes with a 2JZ-GE engine, which is a naturally aspirated version of the legendary 2JZ engine. It is a 3.0-liter, inline-six engine that was also used in other models like the Toyota Supra, but the IS300 version is not turbocharged from the factory.
 

  • Factory engine: The IS300 was equipped with the naturally aspirated 2JZ-GE engine, producing around 215 to 217 horsepower from the factory. 
  • Common modifications: The 2JZ-GE engine is a popular choice for enthusiasts, who frequently perform modifications like turbo swaps to significantly increase power output. 
  • Engine differences: The factory 2JZ-GE has different components from the turbocharged 2JZ-GTE, such as different pistons and head configurations. 



What transmission is in a Lexus IS 300?


The IS 300 models were initially only available with the five-speed automatic transmission in all markets.



Do all Lexus have CVT transmission?


Lexus: Every non-hybrid is not equipped with a CVT. Lincoln: The non-hybrid Corsair and non-hybrid MKX are not equipped with CVTs. Maserati: No modern Maserati is equipped with a CVT. Mazda: No modern Mazda is equipped with a CVT.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.