What kind of gearbox is in the Lexus IS250?
The IS250 is equipped with a conventional six-speed automatic transmission rather than a manual or CVT. This geared automatic is paired with Lexus’ 2.5-liter V6 engine and offers a sport/manual shift mode for more driver control.
In more detail, the IS250, produced through the mid-to-late 2000s in many markets, relies on a torque-converter automatic transmission designed for smooth, refined everyday driving. While most trims include a Sport or sequential shift mode (often via paddle shifters or a gated lever), a factory manual transmission was not commonly offered for this model in major markets. The setup favors comfortable cruising and predictable, quiet shifts, with the option of manually selecting gears when desired.
Gearbox specifications and behavior
Here are the essential specifications and behavior you can expect from the IS250 gearbox:
- Type: Conventional six-speed automatic transmission with torque converter
- Manufacturer lineage: Built for Toyota/Lexus as part of the six-speed automatic family used in the IS250
- Shifting: Fully automatic with manual shift modes (Sport/Sequential Shift); some trims provide paddle shifters
- Driving feel: Smooth, refined shifts optimized for everyday driving; adaptive logic tailors shifts to driving style
- Manual option: No factory manual transmission offered for the IS250 in most markets
- Engine pairing: Matched to the 2GR-FSE 2.5-liter V6 engine for balanced performance
These characteristics explain how the IS250 behaves behind the wheel: a traditional automatic experience with the option for sportier manual control, while prioritizing comfort and quiet operation on longer journeys.
Maintenance and reliability notes
Regular maintenance of the automatic transmission is important for longevity. Here are some practical points to keep in mind:
- ATF changes: Follow the manufacturer’s recommended service intervals for automatic transmission fluid; many owners follow a schedule around 60,000–100,000 miles (96,000–160,000 km) depending on usage and conditions
- ATF type: Lexus/T Toyota generally specifies an appropriate ATF from the World Standard (WS) family for newer transmissions; always confirm the exact specification in your owner’s manual
- Shifts and warning signs: If you notice slipping, rough or delayed shifts, or shudder, consult a mechanic early to prevent further wear
- Maintenance approach: Many shops perform drain-and-fill or fluid replacement as part of routine service; consult a qualified technician for the best approach based on mileage and condition
In summary, routine care of the IS250’s six-speed automatic transmission—paired with the 2GR-FSE engine—helps preserve smooth shifting and reliability, with no factory manual option typically available in the model’s common markets.
Summary
Bottom line: the Lexus IS250 uses a traditional six-speed automatic transmission with a torque converter and a manual shift mode, not a manual gearbox or a CVT. This configuration remains the standard for IS250 models across most markets, delivering smooth, comfortable performance with the option for sportier control when desired.
What transmission does a 2006 IS250 have?
Powertrains
| Calendar year(s) | Model no(s). | Transmission(s) |
|---|---|---|
| 2005–2013 | IS 250 | 6-speed AT (A960E) |
| IS 250 AWD | 6-speed AT (A760F) | |
| 2005–2013 | IS 350 | 6-speed AT (A760E) |
| 2006–2013 | IS 300 |
Are Lexus CVT gearboxes any good?
The E-CVT is highly reliable (it's probably the most reliable transmission available), but it is boring. It has no ``attachment'' to the engine since the engine RPM can vary as much as needed for highest efficiency, so for sporty driving it just doesn't feel very good.
What is the common problem with Lexus IS250?
Common problems with the Lexus IS250 include carbon buildup in the direct injection engine, which can lead to misfires and rough idling, and issues with the plastic dashboard material fading or becoming sticky. Other reported problems include various check engine light codes, a clicking noise from the rear suspension, and potential moisture damage to the amplifier or other electrical components due to clogged AC drain tubes.
This video discusses common problems with the Lexus IS250 and IS350, including engine issues and plastic degradation: 50sLife with SondurenYouTube · Apr 9, 2023
Engine and drivetrain
- Carbon buildup: This is a frequent issue, especially on second-generation models, due to the direct injection system and frequent idling. It can cause misfires, check engine lights, and rough idling.
- Check engine light: Specific codes like P0751, P2714, P0894, or misfire codes (P0300-P0306) are reported, often related to the carbon buildup issue or other engine problems.
- Transmission problems: Some drivers report transmission issues like slipping, which can be caused by a lack of fluid maintenance.
Interior and electrical
- Sticky/aging dashboard: The plastic material on the dashboard can become sticky or fade over time, sometimes unresolved by recalls.
- Moisture damage: Clogged AC drain tubes can lead to water leaking onto the carpet, and moisture can also get into the amplifier, causing it to malfunction.
- Old infotainment system: The original infotainment system is often outdated, with common complaints about glitches, such as the radio randomly shutting off.
- GPS and radio issues: Some owners have reported issues with the navigation system, sometimes fixable by a software or map disc update.
Other issues
- Rear suspension noise: A clicking noise from the rear suspension has been reported by multiple owners.
- Safety issues: Some specific model years have had safety recalls and investigations, including for airbag and steering components.
You can watch this video for a detailed discussion of potential issues when buying a used Lexus IS250: 55sMiguel's GarageYouTube · Jan 19, 2018
Does Lexus have CVT transmission?
Yes, Lexus uses Continuously Variable Transmissions (CVT) in some of its vehicles, particularly in its hybrid models. Lexus calls its specific version an "e-CVT," which is an electronically controlled continuously variable transmission that combines a CVT with a planetary gearset to simulate traditional gear changes.
Lexus hybrid transmissions
- LC 500h: This model uses a unique transmission that blends a CVT with a four-speed automatic to create nine "virtual" gear ratios.
- RX Hybrid: Some RX hybrid models, like the RX 350 Hybrid, come standard with an e-CVT that is paired with the hybrid powertrain.
- UX200: The 2019 UX200 was the first production vehicle to be equipped with a CVT that is paired with a "gear" setup.
Other Lexus vehicles
- Non-hybrid models: Lexus generally does not use CVTs in its non-hybrid models, preferring other types of transmissions.
