Most current Lexus IS 300 models use an 8-speed automatic transmission. Earlier IS 300 generations relied on a 5-speed automatic, and the IS 300h hybrid uses a CVT-style system. Transmission availability can vary by year and market, so check the exact specification for your car.
Overview by era and powertrain
Gasoline IS 300 (modern, turbocharged 2.0L variants)
The contemporary IS 300 lineup, including the 2.0L turbocharged variants sold in many markets, uses an 8-speed automatic transmission. This setup is a traditional automatic with a torque converter and supports paddle shifters and multiple drive modes.
Before listing the details, here are the key transmission characteristics for the gasoline IS 300 in recent years:
- 8-speed automatic transmission with a torque converter
- Paddle shifters and selectable drive modes (including Sport)
- Smooth, frequently quick upshifts with a focus on on-road performance
In short, modern gasoline IS 300 models rely on an 8-speed automatic transmission for everyday driving and performance mode operation.
First-generation IS 300 (2001–2005)
The original IS 300 (sold in North America during its first run) was equipped with a 5-speed automatic transmission. A manual transmission was not offered in the US market, though some overseas regions experimented with manual gearboxes.
Before listing the details, here is the main transmission option for the first-generation IS 300:
- 5-speed automatic transmission
- Manual transmission not offered in most US markets (some overseas markets pursued manuals)
In summary, the first-generation IS 300 used a 5-speed automatic as its sole commonly available option in the United States.
Hybrid IS 300h (hybrid variant)
The IS 300h (the hybrid version marketed in certain regions) uses Lexus Hybrid Drive, which pairs a gasoline engine with an electronically controlled CVT, effectively functioning as an eCVT rather than a traditional stepped automatic.
Before listing the details, the hybrid transmission option is described here:
- eCVT (electronic continuously variable transmission) integrated with hybrid system
Thus, the IS 300h employs a CVT-style transmission specialized for hybrid operation rather than a conventional automatic.
Summary
Across its history, the Lexus IS 300 has used different transmissions depending on year and market. The earliest models relied on a 5-speed automatic, modern gasoline versions generally employ an 8-speed automatic, and the hybrid IS 300h uses an eCVT. Always verify the exact specification for your vehicle by checking the owner’s manual or the VIN-driven build sheet, as there are regional and trim-specific differences.