Most Audi cars run on gasoline, but the exact fuel requirement depends on the model and market. In general, gasoline-powered Audis use premium unleaded fuel, diesel models use diesel, and plug-in hybrids or electric models rely on electricity rather than gasoline. Always check your owner’s manual or the fuel door label for your specific engine’s requirements.
Fuel types in the Audi lineup
Audi offers a range of powertrains including gasoline (petrol), diesel (TDI), plug-in hybrids, and fully electric models. Gasoline engines typically benefit from premium fuel to sustain performance and efficiency, while diesel editions run on diesel. Hybrids and EVs switch to electricity or a combination of fuel and electricity, depending on the system. Exact octane and fuel requirements vary by model year and regional market.
Gasoline engines and octane expectations
For most gasoline-powered Audis, premium unleaded fuel is recommended to maintain peak performance and engine protection. In Europe, this often means 95 RON or higher; in North America, many turbocharged engines are advised to use higher-octane gasoline (commonly 91 AKI or higher, with some models calling for 93 AKI). Always verify the specific requirement for your exact model and year.
Regional octane guidelines
Fuel rating systems differ by region, so octane requirements are not universal across all Audis. The following general guidance helps readers understand where to look, but you should confirm for your vehicle.
- Europe and many other regions: commonly 95 RON or higher for turbocharged TFSI/FSI engines.
- United States and Canada: many gasoline Audis require premium gasoline (91 AKI or higher), with some high-performance variants needing 93 AKI.
- Other markets: consult local documentation, as ethanol blends and regional fuel formulations can affect octane performance.
Concluding note: Always verify the exact octane requirement for your specific vehicle model and year using the owner's manual or the fuel door label. Incorrect octane can lead to knocking, reduced performance, or long-term engine wear.
Diesel and alternative fuels
Diesel-powered Audi models require diesel fuel. In addition, Audi produces plug-in hybrids and fully electric models that do not use gasoline; they are charged from the grid and rely on electric power for operation. If you own a hybrid, the vehicle may use gasoline only when the electric range is depleted or in specific driving modes.
What to do if you refuel with the wrong type
If the wrong fuel is added (for example, gasoline into a diesel engine or vice versa), do not start the engine. Contact roadside assistance or a service center promptly. Draining and flushing the fuel system may be necessary, and damage can be costly if the vehicle is driven with the incorrect fuel present.
How to confirm fuel requirements for your specific car
To be certain, check the owner’s manual and the fuel filler door label, which typically lists the required octane and fuel type. The vehicle identification number (VIN) can also be used when contacting a dealer or Audi support to obtain exact specifications for your car’s year and trim.
Summary
In general, Audi gasoline engines prefer premium unleaded fuel with a higher octane rating, with regional variations in exact numbers. Diesel models require diesel, and plug-in hybrids/EVs run on electricity. Always verify the precise fuel type and octane requirement for your specific model and year through official documentation or dealership guidance to ensure optimal performance and longevity.