How many miles per gallon does a Lexus GS400 get?
The Lexus GS400 typically averages about 17 miles per gallon in city driving and around 24 miles per gallon on the highway, depending on year, maintenance, and driving conditions.
EPA fuel economy figures for the GS400
EPA estimates from the late-1990s to early-2000s models show the following approximate ranges for US-market GS400s with the 4.0-liter V8 and automatic transmission.
- 1998 GS400: 17 mpg city / 24 mpg highway
- 1999 GS400: 17 mpg city / 24 mpg highway
- 2000 GS400: 17 mpg city / 24 mpg highway
These figures are representative of the era and can vary slightly by model year, drivetrain configuration, and specific vehicle condition.
Real-world performance and factors that affect mpg
In everyday driving, owners report a broader range influenced by traffic, terrain, and maintenance. Here are common expectations based on typical use.
- City driving: about 14–18 mpg
- Highway driving: roughly 22–28 mpg
Real-world results often fall short of the EPA figures in urban conditions. Regular upkeep and mindful driving can help you approach the higher end of these ranges.
Tips to improve mpg
Implementing a few practical habits can help maximize efficiency from a GS400’s V8 engine.
- Keep up with maintenance: timely tune-ups, clean air filters, and fresh spark plugs
- Maintain proper tire pressure and alignment
- Avoid aggressive acceleration and excessive idling
- Use high-quality fuel and adhere to the recommended octane
- Reduce extra weight and remove roof accessories when not in use
Even small adjustments can yield noticeable gains, especially with an older luxury sedan that uses a larger displacement engine.
Summary
The Lexus GS400 generally delivers around 17 mpg in city conditions and about 24 mpg on the highway according to its EPA ratings from production years, with real-world figures often lower in heavy urban use. With regular maintenance and prudent driving, you can maximize the vehicle’s fuel economy within these ranges.
How big is the gas tank on a GS400?
Fuel & MPG
316.8/435.6 mi. 19.8 gal.
How many miles per gallon does a GS400 get?
Fuel Economy
| City | 16 mpg |
|---|---|
| Highway | 22 mpg |
| Combined | 18 mpg |
Is the GS400 expensive to maintain?
The estimated cost to maintain and repair a Lexus GS400 ranges from $105 to $3513, with an average of $440.
Is the Lexus GX 460 fuel efficient?
A GX 460 model provides a 15/19/16 MPG city/hwy/combined4.
