Whether or not you should run higher octane gas in your Kia Telluride depends on several factors. 

Octane rating is a measure of how much compression a gasoline can withstand before it auto-ignites or “knocks”. 

A higher octane rating means the fuel can withstand more compression before auto-igniting. This is particularly important for higher-performance engines

 as they have higher compression ratios, making them more susceptible to knocking.

When it comes to the Kia Telluride, the manufacturer recommends that you use regular 87 octane gasoline. 

 In fact, using higher octane gasoline may actually reduce performance and increase fuel consumption in this vehicle due to the engine design

 The Kia Telluride is equipped with a 3.8L V6 engine, which is designed to run on regular 87 octane fuel. 

 The engine is programmed to detect the octane level of the fuel and adjust the spark timing to compensate.

When higher octane fuel is used, the engine computer may not adjust the spark timing correctly, resulting in reduced performance and increased fuel consumption.

it is best to stick with the manufacturer’s recommendation and use regular 87 octane fuel. In conclusion, the Kia Telluride is designed to run on regular 87