What is the gas mileage on a 2015 TLX?
Gas mileage on the 2015 TLX varies by engine and drivetrain; roughly, the 2.4L four-cylinder with front-wheel drive achieves about 28 mpg combined, while the 3.5L V6 models average around 25 mpg combined.
This article explains how the 2015 TLX's fuel economy differed by engine choice and drivetrain, and provides EPA estimates for common configurations.
Engine options and official fuel economy
The 2015 TLX was offered with two engines and two drivetrain setups. The following EPA figures reflect typical configurations for consumer models.
2.4-liter inline-4
EPA estimates for the 2.4L engine are shown for both front-wheel drive and SH-AWD.
- 2.4L i4, FWD (8-speed DCT): 24 mpg city / 35 mpg highway / 28 mpg combined
- 2.4L i4, SH-AWD: 23 mpg city / 32 mpg highway / 26 mpg combined
The combined figure is an average; real-world mpg can vary with driving style and conditions.
In summary, the 2.4L configuration with FWD delivers the best highway efficiency, while SH-AWD reduces mileage modestly.
3.5-liter V6
EPA estimates for the 3.5L V6 cover both drivetrain configurations:
- 3.5L V6, FWD (9-speed auto): 21 mpg city / 34 mpg highway / 25 mpg combined
- 3.5L V6, SH-AWD: 21 mpg city / 32 mpg highway / 25 mpg combined
Again, the vehicles with the V6 tend to be less fuel-efficient overall, with highway efficiency remaining solid but city mileage lower than the four-cylinder option.
Summary
Overall, the 2015 TLX’s fuel economy hinges on engine choice and whether the car is front-wheel drive or all-wheel drive. The four-cylinder model offers the best highway fuel economy, typically around 35 mpg, with a combined around 28 mpg for FWD. The 3.5L V6 provides strong performance but generally yields around 25 mpg combined, with SH-AWD shaving a few miles per gallon off city and highway figures. Real-world mileage will vary based on driving style, conditions, and maintenance.
