What is the diff ratio for Lexus gs450h?
The diff ratio (final-drive ratio) for the Lexus GS 450h is typically in the mid-3:1 range, roughly 3.5–3.7:1, though the exact value varies by model year and market. For a precise figure, check the vehicle’s VIN-allocated service documentation or factory data.
How final-drive ratios vary on the GS 450h
The GS 450h is a full-hybrid sedan that pairs a 3.5-liter V6 with electric motors in a transaxle that drives all wheels. The final-drive ratio is part of that transaxle gearing and affects engine speed at highway speeds, acceleration feel, and fuel economy. Because the model was produced for different regions over several years, Lexus published slightly different final-drive numbers by year and market.
Common ranges you may encounter
- 3.54:1
- 3.70:1
- 3.72:1
- 3.73:1 (some markets depending on tire size and drivetrain tuning)
Note: These figures are representative values from manuals and data sheets. The exact number for a given vehicle should be verified via VIN-specific service information.
How to confirm your vehicle's exact final-drive ratio
To confirm the precise final-drive ratio for a specific GS 450h, use official sources tied to your VIN.
- Check the Lexus TechInfo or dealer service portal using your VIN.
- Inspect the data plate on the differential housing or the engine bay data sheet if available.
- Ask a Lexus dealer or qualified mechanic with access to factory repair manuals for your market/year.
Conclusion: In general, the GS 450h’s diff ratio sits in the mid-3:1 range, with exact values depending on year, market, and tire size. For certainty, obtain VIN-specific data from official sources.
Summary: The Lexus GS 450h’s final-drive ratio is typically around 3.5–3.7:1, varying by year and market; confirm with VIN-specific Lexus service information for an exact figure.
