Do Acura TLX require premium gas?
In short: turbocharged TLX models generally require premium fuel, while the base, non-turbo TLX can run on regular unleaded. Always check your specific model year and engine in the owner's manual for the exact octane requirements.
Understanding TLX engine options and fuel needs
The Acura TLX lineup has evolved over the years. While early models offered a naturally aspirated engine, recent TLX versions have leaned on turbocharged powerplants, with a high-performance variant known as the Type S. Octane requirements typically align with the engine’s compression and boosting level, which influences how the ECU manages timing and power.
Fuel requirements by TLX engine
Below is a quick guide to the fuel needs associated with the main TLX variants on recent model years.
- TLX with 2.0L turbocharged engine: Premium gasoline (92+ octane in some markets; generally 91 octane or higher) is recommended to preserve advertised performance and efficiency. Regular may be used, but you may experience reduced power or throttle response.
- TLX Type S (3.0L turbocharged V6): Premium gasoline is required to prevent knocking and to achieve the published horsepower and torque. Using regular is not recommended and can limit performance.
- TLX with 2.4L naturally aspirated engine (older generation): Regular unleaded gasoline (87 octane) is acceptable. Premium is not required, but some drivers choose premium for potential gains in smoothness or efficiency depending on driving conditions. Always verify the exact requirement in your model year’s owner manual.
These guidelines reflect how most TLX models have been configured in recent years, but octane requirements can vary by market and year. Always consult the specific owner's manual or a dealer for your vehicle.
What to do if you’re unsure or see performance changes
If you’re uncertain about which fuel to use or you’ve accidentally filled with a lower-octane fuel, monitor the vehicle’s response. Turbocharged TLX models are more sensitive to octane levels, and you may notice reduced performance, especially under heavy acceleration or hot conditions. If this happens, refuel with the recommended premium fuel and, if needed, contact a dealer for a diagnostic check.
Summary
The Acura TLX’s fuel requirements depend on the engine. Turbocharged versions (including the base 2.0L turbo and the high-performance Type S) generally require premium fuel to meet their official specifications. The older, non-turbo 2.4L TLX can run on regular gasoline, though owners may opt for higher-octane fuel for potential performance or efficiency benefits. Always verify the exact octane requirement for your model year and market in the owner’s manual.
